Objective:To evaluate the effect of bilateral hypogastric artery ligation(BHGAL)on women's pregnancy outcomes and fertility rates in cases with severe postpartum hemorrhage.Methods:Patients hospitalized in a terti...Objective:To evaluate the effect of bilateral hypogastric artery ligation(BHGAL)on women's pregnancy outcomes and fertility rates in cases with severe postpartum hemorrhage.Methods:Patients hospitalized in a tertiary care center between 2007 and 2018 were included in the study.The records of cases were obtained from the hospital database,retrospectively.Maternal demographic data,morbidities or complications associated with BHGAL surgery,any additional haemostatic interventional or surgical procedures,preoperative admission and lowest postoperative haematocrit-hemoglobin values,blood products given,type of anaesthesia,intensive care unit(ICU)and length of hospital stay were recorded.In cases without surgical sterilization,future fertility and subsequent pregnancy outcomes were assessed for at least two years after operation.Information was obtained through face-to-face or telephone interviews with patients whose long-term fertility and subsequent pregnancy outcomes were assessed.Results:Sixty-eight patients with BHGAL surgery history were included in the study.26 Of 37 cases(70%)that did not undergo surgical sterilization had a desire for pregnancy after the surgery.Six of these cases(23%)were diagnosed with secondary infertility.The fertility rate of these cases was 77%,and subsequent pregnancy was detected in 20 women.A total of 25 pregnancies,including first and second pregnancies,developed,and 15 of these pregnancies resulted in term delivery,six preterm births,one stillbirth,and three abortions.Conclusions:The postoperative pregnancy rate was found to be higher than the rate of women with infertility problems,and this surgery does not seem to adversely affect pregnancy outcomes.This is a tertiary center experience and cohort studies with large patient series are needed.展开更多
BACKGROUND Postpartum hemorrhage(PPH)is a leading cause of maternal mortality,and hysterectomy is an important intervention for managing intractable PPH.Accurately predicting the need for hysterectomy and taking proac...BACKGROUND Postpartum hemorrhage(PPH)is a leading cause of maternal mortality,and hysterectomy is an important intervention for managing intractable PPH.Accurately predicting the need for hysterectomy and taking proactive emergency measures is crucial for reducing mortality rates.AIM To develop a risk prediction model for PPH requiring hysterectomy in the ethnic minority regions of Qiandongnan,China,to help guide clinical decision-making.METHODS The study included 23490 patients,with 1050 having experienced PPH and 74 who underwent hysterectomies.The independent risk factors closely associated with the necessity for hysterectomy were analyzed to construct a risk prediction model,and its predictive efficacy was subsequently evaluated.RESULTS The proportion of hysterectomies among the included patients was 0.32%(74/23490),representing 7.05%(74/1050)of PPH cases.The number of deliveries,history of cesarean section,placenta previa,uterine atony,and placenta accreta were identified in this population as independent risk factors for requiring a hysterectomy.Receiver operating characteristic curve analysis of the prediction model showed an area under the curve of 0.953(95%confidence interval:0.928-0.978)with a sensitivity of 90.50%and a specificity of 90.70%.CONCLUSION The model demonstrates excellent predictive power and is effective in guiding clinical decisions regarding PPH in the ethnic minority regions of Qiandongnan,China.展开更多
Background: Postpartum hemorrhage (PPH) is the major contributor to maternal mortality and morbidity worldwide as well as in Tanzania. Studies have shown Pre-eclampsia as a risk indicator for Postpartum hemorrhage and...Background: Postpartum hemorrhage (PPH) is the major contributor to maternal mortality and morbidity worldwide as well as in Tanzania. Studies have shown Pre-eclampsia as a risk indicator for Postpartum hemorrhage and D-dimer tends to rise in women with pre-eclampsia. Few studies that have shown the association between D-dimer and PPH have been controversial and differ according to ethnicity and lifestyle. Hence there is no suitable reference interval for D-dimer in predicting Postpartum hemorrhage among women with pre-eclampsia. Broad Objective: This study aimed to assess the association, sensitivity, and specificity of D-dimer as a laboratory predictor of postpartum hemorrhage among women with pre-eclampsia at KCMC hospital. Methodology: This was a hospital-based analytical cross-sectional study conducted at KCMC Hospital in Northern Tanzania from September 2022 to March 2023. A total of 195 women with pre-eclampsia were included in this study. Plasma D-dimer levels were taken from women with pre-eclampsia pre-delivery. Haematocrit was compared before and after delivery, and a fall of 10% was considered as Postpartum hemorrhage together with clinical assessment of the patient. Participants were divided among those who had severe features and those who did not have severe features and were further categorized into those who had PPH and those who did not have PPH. Logistic regression was used to determine the association between D-dimer and PPH adjusting for other factors. The Receiver Operating Curve (ROC) was used to evaluate the predictive value. Results: Higher median D-dimer levels were seen among women who had PPH compared to those who had no PPH. D-dimer was seen to be associated with PPH, thus for every unit increase of µg/ml of D-dimer among women who had pre-eclampsia without severe features there was a 14% significant increase in the odds of having postpartum hemorrhage and a 45% significant increase of having postpartum hemorrhage among those who had pre-eclampsia with severe features. Furthermore, the cut-off point of a D-dimer level of 0.66 µg/ml significantly predicts postpartum hemorrhage with a sensitivity of 75% and specificity of 55%. For those who had no severe features the cut-off point was 0.53 µg/ml with a sensitivity of 95% and specificity of 53%, and for those who had severe features the cut-off point was 3.58 µg/ml with a sensitivity of 50% and specificity of 96%. Conclusion: D-dimer can be used to predict postpartum hemorrhage among pre-eclampsia, especially among those who have severe features. This shows that D-dimer has specificity in predicting PPH in women with pre-eclampsia and can be applied in clinical services to save women from maternal morbidity and mortality. Blood products such as fresh frozen plasma, platelets, and whole blood together with tranexamic acid should be readily available in women with pre-eclampsia especially those with severe features with a D-dimer level of 3.58 µg/ml and above during delivery as they are at high risk of developing PPH.展开更多
BACKGROUND Transcatheter arterial embolization(TAE)has been widely used as an effective and a safe treatment method and was often used as an alternative to the surgical management,but there are limited studies on the ...BACKGROUND Transcatheter arterial embolization(TAE)has been widely used as an effective and a safe treatment method and was often used as an alternative to the surgical management,but there are limited studies on the efficacy and the safety for patients undergoing their secondary postpartum hemorrhage(PPH).AIM To evaluate the usefulness of TAE for secondary PPH focusing on the angiographic findings.METHODS We conducted a research from January 2008 to July 2022 on all 83 patients(mean:32 years,range:24-43 years)presented with secondary PPH and they were treated with TAE in two university hospitals.The medical records and angiography were retrospective reviewed in order to evaluate the patients’characteristics,delivery details,clinical status and peri-embolization management,angiography and embolization details,technical/clinical success and complications.The group with active bleeding sign and the group without it were also compared and analyzed.RESULTS On angiography,46(55.4%)patients showed active bleeding signs such as contrast extravasation(n=37)or pseudoaneurysm(n=8)or both(n=1),and 37(44.6%)patients showed non-active bleeding signs such as only spastic uterine artery(n=2)or hyperemia(n=35).In the active bleeding sign group there were more multiparous patients,low platelet count,prothrombin time prolongation,and high transfusion requirements.The technical success rates were 97.8%(45/46)in active bleeding sign group and 91.9%(34/37)in non-active bleeding sign group,and the overall clinical success rates were 95.7%(44/46)and 97.3%(36/37).An uterine rupture with peritonitis and abscess formation occurred to one patient after the embolization,therefore hysterostomy and retained placenta removal were performed which was a major complication.CONCLUSION TAE is an effective and a safe treatment method for controlling secondary PPH regardless of angiographic findings.展开更多
In the immediate postpartum period, women need to be observed by the obstetric nurse so that measures can be taken to prevent hemorrhages and reduce its complications. Most maternal deaths from hemorrhage are preventa...In the immediate postpartum period, women need to be observed by the obstetric nurse so that measures can be taken to prevent hemorrhages and reduce its complications. Most maternal deaths from hemorrhage are preventable with support measures for clinical practice, such as: guiding protocols, training of professionals, organization and management of health services and provision of adequate conditions for the parturition process. Objective: To validate Rangel’s instrument with its application in the Maternity Ward of the General Hospital of Huambo, Angola. Methodology: This is a descriptive study with a quantitative approach. This is the sixth stage, called pre-test, of the Translation and Cultural Adaptation process. This instrument was sent for evaluation by the validators using the electronic data collection form named Google forms, with a seven-point Likert-type scale (from 7—totally agree to 1—totally disagree). The analysis was performed with the Cronbach’s Alpha coefficient index (>0.91) and the Content Validity Index (CVI > 0.98). Results: Of the 10 items of evaluation criteria of the instrument analyzed by the 20 validators, 100% of them obtained a Cronbach’s Alpha index rating of 0.91: clarity;coherence;scientific writing;relevance;sequence;uniqueness and updating. Coverage, item criticality and objectivity reached a Cronbach’s Alpha of 0.95. The Content Validity Index was 0.95 for coverage, coherence, item criticality, scientific writing, relevance and updating. Conclusion: Rangel’s instrument for nursing care aimed at preventing and controlling hemorrhage in the third period of birth, translated into Angolan Portuguese and validated by nurses, through the statistical results obtained in the validation, was considered reliable and necessary for clinical nursing practice in Huambo, Angola. .展开更多
Background: Postpartum hemorrhage is one of the main causes of maternal mortality, mainly in underdeveloped countries. Deaths are mostly preventable, and are related to socioeconomic development, organization of healt...Background: Postpartum hemorrhage is one of the main causes of maternal mortality, mainly in underdeveloped countries. Deaths are mostly preventable, and are related to socioeconomic development, organization of health services and professional training. Objective: To systematize alerts for the prevention of postpartum hemorrhage. Method: This is a technical essay developed from reflections on previously produced and published texts about maternal mortality and has hemorrhage as the focus of this study. Results: It presents the concept, classification of hemorrhage, risk factors and their classification, prevention strategies, universal recommendations, pharmacological and non-pharmacological interventions when hemorrhage already exists, bleeding assessment techniques;clinical evaluation, by laboratory examination and by shock index. Conclusions: Hemorrhage is a preventable cause of maternal death through the accomplishment of multiple care. Hospital care must be conducted by qualified professionals and in adequate numbers. The risk diagnosis must be carried out during prenatal care with the recording of clinical data accessible in the health care network. All references studied are not specific to nursing, as hemorrhage prevention requires multidisciplinary action.展开更多
Worldwide obstetric hemorrhage remains the leading cause of maternal mortality, accounting for over one quarter of maternal deaths. Over half of these deaths occur in Sub-Saharan Africa with mortality rates of 500 - 1...Worldwide obstetric hemorrhage remains the leading cause of maternal mortality, accounting for over one quarter of maternal deaths. Over half of these deaths occur in Sub-Saharan Africa with mortality rates of 500 - 1000 per 100,000 births, compared to approximately 5 - 10 in developed countries. Over decades in Sub Saharan Africa preventive measures and treatment protocols have been made to reduce maternal mortality caused by PPH. While rates of postpartum hemorrhage have continued to rise, there is a need to evaluate if its etiology and patterns have changed over time. Broad Objective: This study aims at describing trends in incidence, causes and maternal outcomes of Postpartum Hemorrhage at Muhimbili National Hospital for a period of 7 years. Methodology: This is a retrospective descriptive hospital-based study that has included all cases of postpartum hemorrhage at Muhimbili National Hospital, a tertiary hospital in Tanzania from 2014 to 2020. The data was analyzed using SPSS Version 26 and presented using frequency tables, figures and percentages. The trends of postpartum hemorrhage over time were determined using chi-square test and P-value where less than 0.05 was considered statistically significant. Results: Overall, the incidence of postpartum hemorrhage has been fluctuating over the years with minimum of 1.78% and maximum of 2.87% with no statistical significance. Out of 1113 enrolled cases of PPH, 422 (37.9%) were attributed to genital tears followed by uterine atony 285 (25.6%). A statistically significant increase in linear trend was observed in the postpartum hemorrhage cases due to uterine atony, uterine rupture and sub analysis on genital tears (cervical tear). Overall, there was a statistically significant change in trend of maternal outcomes throughout the years, with a P-value < 0.001 and likelihood of complications increasing over time. Conclusion: The trend in the incidence of postpartum hemorrhage has been fluctuating over the years during the study period. The leading cause of postpartum hemorrhage was genital tears, followed by uterine atony with a significant increase in adverse maternal outcomes over the years. Continuous health education to medical personnel to improve timely and proper diagnosis of women in danger of PPH and timely referral, thus improve maternal morbidity and mortality.展开更多
Postpartum hemorrhage (PPH) is one of the most adverse obstetric outcomes. Our aim is to detect the risks of multilevel PPH in different cesarean section (CS) groups [including nulliparous CS with indications, nul...Postpartum hemorrhage (PPH) is one of the most adverse obstetric outcomes. Our aim is to detect the risks of multilevel PPH in different cesarean section (CS) groups [including nulliparous CS with indications, nulliparous CS without indications, repeat cesarean (RC), vaginal birth after cesarean (VBAC), cesarean after vaginal birth (CAVB)]. We conducted a retrospective cohort study, and the data on 127 145 women collected from January 2014 to May 2016 and from 35 tertiary hospitals in Shanxi province, China, were reviewed. Based on the measuring results of PPH, an ordered logistic regression model was used to analyze the adjusted PPH risks for each of the CS groups, and comparisons were drawn between them. Finally, a total of 99 066 nulliparous (77.92%) and 28 079 multiparous (22.08%) women were observed. The number of CS cases was 61 117, and the rate for CS was 48.07%. A total of 10 029 women did not show indications for CS and accounted for 16.41% of the CS parturient, whereas 9103 women underwent a repeated cesarean, with a CS frequency of 14.89%. The number of VBAC cases was 989, whose rate was 9.88% in prior CS women. The number (proportions) of PPH was 3658 (2.88%) in L1 (PPH volume: ≥900 and 〈1500 mL), 520 (0.41%) in L2 (PPH volume: ≥1500 and〈2100 mL), and 201 (0.16%) in L3 (PPH volume: ≥2100 mL). The Ln (n= 1, 2, 3, etc.) represented the increasing order of PPH severity. In the adjusted results, compared with spontaneous vaginal delivery (SVD) as the reference group, in the adjusted result for nulliparous, there was a decreased PPH risk in CS with indications (OR: 2.32; CI: 2.04-2.62), which was lower than that of CS without indications (OR: 2.50; CI: 2.01-2.96). The highest PPH risk in all subgroups (i.e. nulliparous and multiparous groups) was observed in the RC (OR: 3.61; CI: 3.16-4.17), which was nearly twice higher than that of the VBAC (OR: 1.82; CI: 1.33-2.52). CAVB (OR: 1.03; CI: 0.65-1.62) showed no significant difference with the reference group. Thus, we deemed that CS should be avoided in nulliparous pregnancies unless indicated, to prevent or reduce the rates for the use of RC or VBAC which are high risks of severe PPH to the parturient women.展开更多
Objective: Postpartum hemorrhage(PPH) is a leading cause of maternal death. Although guidelines have been updated, those with detailed protocols are limited for nursing practice. This study aims at establishing an ear...Objective: Postpartum hemorrhage(PPH) is a leading cause of maternal death. Although guidelines have been updated, those with detailed protocols are limited for nursing practice. This study aims at establishing an early assessment and intervention protocol as a toolkit for PPH for midwives and obstetrical nurses.Methods: Employing the evidence-based method, a systematic Internet search of guidelines was conducted and appraisal of literatures was conducted with AGREE system and Oxman-Guyatt Overview Quality Assessment Questionnaire(OQAQ), according to which a protocol draft was therefore developed. Then, a two-round modified Delphi method was utilized to reach a consensus of the protocol built on best practices. Selection criteria for each intervention measure included consensus level with a threshold of 70%, mean of importance(M) >3.5, and coefficient of variation(CV) <0.25. Reliability of experts' opinion was calculated by positive coefficient and authoritative coefficient. Items without consistency were enlisted in the second-round consult. When all items met the selection criteria, the protocol would be finally formulated.Results: A 122-measure protocol was established, including prevention, assessment, and intervention of PPH. With a panel of 14 experts participated in the consult, the positivity coefficient was 0.93 and 1.00 for two rounds, respectively, and the authority coefficient was 0.88. After a two-round consult and revision of the draft, the final program was formulated, containing 5 first-level indexes and 14 second-level indexes with a total item of 120.Conclusions: The PPH protocol, based on high-quality evidences, was formulated with a two-round Delphi method, which can provide insight for midwives and obstetrical nurses to effectively deal with PPH.展开更多
Among the most consolidated dogmas in obstetrics, we have the essential role of oxytocin during: labor by regulating, consolidating uterine contractions, by supporting the expulsive efforts of the patient during child...Among the most consolidated dogmas in obstetrics, we have the essential role of oxytocin during: labor by regulating, consolidating uterine contractions, by supporting the expulsive efforts of the patient during childbirth and after childbirth by preventing postpartum hemorrhage. But what challenged us to conduct our study is the large and increasing number of surgical operations for postpartum hemorrhage in patients who received oxytocin during labor. We assumed that the generalization use of oxytocin in all patients during labor is probably responsible of this increasing rate of incidents. To verify this assumption, we carried out a prospective randomized comparative study, involving 3990 pregnant patients admitted at the start of labor at term, with no contraindication for giving birth by normal ways, during a period of 10 months (January-October 2022). The patients have been divided into 2 groups. The first group comprises 1991 patients who were placed on admission on a glucose serum infusion with 4 ampoules of a non-anticholinergic musculotropic antispasmodic: “Hydrated phloroglucinol + trimethylphloroglucinol” (Each ampoule contains 40 mg of hydrated phloroglucinol and 0.04 mg of trimethylphloroglucinol) instead of receiving oxytocin during the active phase of their labor and a second group consisting of 1999 patients who received oxytocin during the active phase of their labor. The results were very surprising and contrary to the already consolidated evidence in our specialty. Indeed, the rate of postpartum hemorrhages was 10 patients (0.5%) in the 1st group vs 30 patients (1.5%) in the 2nd group, 9 patients (0.4%) presented fetal heart rate abnormalities in the 1st group vs 90 (4.5%) in the 2nd group, 8 cases (0.4%) of dynamic dystocia in the 1st group vs 132 cases (6.6%) in the 2nd group and 99 caesareans (5%) in the 1st group vs 299 (15%) in the 2nd group. Against all expectations the results were very surprising, with more details in the article.展开更多
Objective:To investigate the effect of misoprostol and oxytocin combined with calcium gluconate on parturient with high-risk postpartum hemorrhage.Methods:The clinical data of 80 parturient with high-risk postpartum h...Objective:To investigate the effect of misoprostol and oxytocin combined with calcium gluconate on parturient with high-risk postpartum hemorrhage.Methods:The clinical data of 80 parturient with high-risk postpartum hemorrhage who were treated in our hospital from July 2016 to July 2019 were retrospectively analyzed.According to different treatment methods,they were divided into control group(treated with misoprostol combined with oxytocin,40 cases)and observation group(treated with misoprostol and oxytocin combined with calcium gluconate,40 cases),compared the clinical efficacy,delivery time,postpartum hemorrhage 2 hour after delivery,postpartum hemorrhage 24 hours after delivery and Apgar score of the newborns at 1min after birth.Results:The total effective rate(95.00%)in the observation group was higher than that in the control group(77.50%),and the difference was statistically significant(P<0.05).The third delivery stage in the observation group was shorter than that in the control group,and the postpartum hemorrhage volume was less than that in the control group.The difference was statistically significant(P<0.05).There was no significant difference in Apgar score of the two groups of newborns(P>0.05).Conclusion:Misoprostol and oxytocin combined with calcium gluconate is effective in treating high-risk postpartum hemorrhage parturient,which not only can effectively reduce postpartum hemorrhage and shorten the delivery time,but also is beneficial for neonatal outcome and worthy of clinical application.展开更多
Introduction: Postpartum hemorrhage (PPH) is one of the leading causes of maternal death in the world and it is reported to occur in 5% - 8% of pregnancies. Objective: This study aimed to present a single centre’s ex...Introduction: Postpartum hemorrhage (PPH) is one of the leading causes of maternal death in the world and it is reported to occur in 5% - 8% of pregnancies. Objective: This study aimed to present a single centre’s experience in treating PPH by balloon tamponade. Methods: During the time period between January 2013 and March 2016, 50 patients who had undergone balloon tamponade for postpartum hemorrhage in our clinic were evaluated retrospectively. The patients’ age, parity, type of delivery, birth weight, hemoglobin and platelet values, total blood loss from catheter, balloon’s staying time, blood and platelet transfusion status, the presence of placenta anomalies and the Bakri balloon hemostasis success rate were evaluated. Results: During the study period, there were 27,249 deliveries. The frequency of massive postpartum hemorrhage was 0.61% (n = 168). Among the 168 patients with massive postpartum hemorrhage, there were 50 patients in whom the Bakri balloon catheter was used. Bakri balloons were placed via cesarean section incision in 19 patients and via vagina in 31 patients. The mean staying time of Bakri balloon was 18 hours. In 8 patients, balloon tamponade failed. Two patients underwent hysterectomy;other two patients had surgical ligation of the hypogastric artery. Four cases were referred to a tertiary center. Placental invasion abnormalities were observed in five patients. The overall Bakri balloon hemostasis successful rate was found to be as 84% in all cases. Conclusion: Bakri balloon tamponade is an effective, safe and practical approach in the treatment of postpartum hemorrhage.展开更多
Postpartum hemorrhage is a serious complication of preeclampsia.The main influencing factors of Preeclampsia on postpartum hemorrhage include vascular disease,trophoblast differentiation and infiltration disorder,the ...Postpartum hemorrhage is a serious complication of preeclampsia.The main influencing factors of Preeclampsia on postpartum hemorrhage include vascular disease,trophoblast differentiation and infiltration disorder,the influence of antispasmodic,sedative and antihypertensive drugs,the incidence of hypertensive disorder complicating pregnancy related to calcium deficiency,coagulation dysfunction,and decreased blood volume during pregnancy.In recent years,postpartum hemorrhage has been the leading cause of maternal death in the world.Therefore,it is critical to understand the influencing factors of preeclampsia on postpartum hemorrhage.Based on the research and guidelines of preeclampsia and postpartum hemorrhage in recent years,this paper analyzes the influencing factors of preeclampsia on postpartum hemorrhage,and provides new ideas for clinical reduction of postpartum hemorrhage.展开更多
Background:The APPEC study is a large-population randomized controlled trial in China evaluating the role of low-dose aspirin prophylactic treatment for pre-eclampsia.There was no statistically significant difference ...Background:The APPEC study is a large-population randomized controlled trial in China evaluating the role of low-dose aspirin prophylactic treatment for pre-eclampsia.There was no statistically significant difference in postpartum hemorrhage(PPH)incidence between the aspirin and control groups.This study aimed to evaluate the potential bleeding risk of 100 mg aspirin in high-risk pregnant women and the difference in the incidence of PPH according to maternal characteristics.Methods:This is a secondary data analysis of the APPEC study.Platelet counts and coagulation test results were collected at five follow-up visits.Subgroups defined by maternal age(<35 years and≥35 years),pre-pregnancy body mass index(pre-BMI,<28 kg/m 2 and≥28 kg/m 2),parity,gestational age at enrollment,and medical history,including pre-eclampsia,chronic hypertension,and diabetes mellitus,were analyzed.Logistic regression analysis was used to determine the statistical significance of the difference in the incidence of PPH after aspirin administration in pregnant women in each subgroup.Adjustment using multiple logistic regression models followed these analyses.Binary logistic regression was used to determine the relationship between pre-BMI and PPH.Results:There was no significant difference between the aspirin and control groups in bleeding risk(3.4%[16/464]vs.3.0%[13/434],T=0.147,P=0.701).No significant difference was found in the incidence of PPH in total(relative risk=1.220,95%confidence interval[CI]=0.720–2.067,P=0.459;aspirin group vs.control group,6.5%[30/464]vs.5.3%[23/434],P=0.459)or in subgroup analysis.A significant correlation between pre-BMI and PPH was found in the aspirin group,while in the control group there was no significant correlation(aspirin group,odds ratio[OR]=1.086,95%CI=1.004–1.175,P=0.040;control group,OR=1.060,95%CI=0.968–1.161,P=0.209).Conclusions:A dosage of 100 mg of aspirin per day,initiated from 12 to 20 gestational weeks until 34 weeks of gestation,did not increase the risk of potential bleeding and PPH regardless of the maternal characteristic.In the aspirin group,the positive correlation between BMI and PPH was significant.Trial Registration:ClinicalTrials.gov,NCT01979627.展开更多
Background Postpartum hemorrhage(PPH)could be avoided by identifying high-risk women.The objective of this systematic review is to determine PPH predictors using machine learning(ML)approaches.Method This strategy inc...Background Postpartum hemorrhage(PPH)could be avoided by identifying high-risk women.The objective of this systematic review is to determine PPH predictors using machine learning(ML)approaches.Method This strategy included searching for studies from inception through November 2022 through the database included:Cochrane Central Register,PubMed,MEDLINE,EMBASE,ProQuest,Scopus,WOS,IEEE Xplore,and the Google Scholar database.The search methodology employed the PICO framework(population,intervention,control,and outcomes).In this study,“P”represents PPH populations,“I”represents the ML approach as intervention,“C”represents the traditional statistical analysis approach as control,and“O”represents prediction and diagnosis outcomes.The quality assessment of each included study was performed using the PROBAST methodology.Results The initial search strategy resulted in 2048 citations,which were subsequently refined by removing duplicates and irrelevant studies.Ultimately,four studies were deemed eligible for inclusion in the review.Among these studies,three were classified as having a low risk of bias,while one was considered to have a low to moderate risk of bias.A total of 549 unique variables were identified as candidate predictors from the included studies.Nine distinct models were chosen as ML algorithms from the four studies.Each of the four studies employed different metrics,such as the area under the curve,false positive rate,false negative rate,and sensitivity,to report the accuracy of their models.The ML models exhibited varying accuracies,with the area under the curve(AUC)ranging from 0.706 to 0.979.Several weighted predictors were identified as significant factors in PPH risk prediction.These included pre-pregnancy maternal weight,maternal weight at the time of admission,fetal macrosomia,gestational age,level of hematocrit at the time of admission,shock index,frequency of contractions during labor,white blood cell count,pregnancy-induced hypertension,the weight of the newborn,duration of the second stage of labor,amniotic fluid index,body mass index,and cesarean delivery before labor.These factors were determined to have a notable influence on the prediction of PPH risk.Conclusion The findings from ML models used to predict PPH are highly encouraging.展开更多
Background: The reports on massive transfusions (MTs) in obstetrics have recently been an increasing trend. We aimed to define the clinical features, risk factors, main causes, and outcomes of MTs due to severe pos...Background: The reports on massive transfusions (MTs) in obstetrics have recently been an increasing trend. We aimed to define the clinical features, risk factors, main causes, and outcomes of MTs due to severe postpartum hemorrhage (PPH) and the frequency trends over the past 10 years. Methods: We retrospectively analyzed the data of 3552 PPH patients who were at ≥28 weeks of gestation in the Obstetric Department of Peking University First Hospital from January 2006 to February 2015. The clinical records of patients receiving MT with ≥5 units (approximately 1000 ml) of red blood cells within 24 h of giving birth were included. The Pearson's Chi-square and Fisher's exact tests were used to compare the frequency distributions among the categorical variables of the clinical features. Results: One-hundred six women were identified with MT over the 10-year period. The MT percentage was stable between the first 5-year group (2006-2010) and the second 5-year group (2011-2015) (2.5‰ vs. 2.7‰, χ^2 = 154.85, P = 0.25). Although uterine atony remained the main cause of MT, there was a rising trend for placental abnormalities (especially placenta accreta) in the second 5-year group compared with the first 5-year group (34% vs. 23%, χ^2 = 188.26, P = 0.03). Twenty-four (23%) women underwent hysterectomy, and among all the causes of PPH, placenta accreta had the highest hysterectomy rate of 70% (17/24). No maternal death was observed. Conclusions: There was a rising trend for placental abnormalities underlying the stable incidence of MT in the PPH cases. Placenta accreta accounted for the highest risk of hysterectomy. It is reasonable to have appropriate blood transfusion backup for high-risk patients, especially those with placenta accreta.展开更多
Objective:To develop a model to predict the risk of postpartum hemorrhage(PPH)following cesarean delivery in women with a scarred uterus.Methods:A total of 4,637 pregnant women with scarred uterus who underwent a cesa...Objective:To develop a model to predict the risk of postpartum hemorrhage(PPH)following cesarean delivery in women with a scarred uterus.Methods:A total of 4,637 pregnant women with scarred uterus who underwent a cesarean delivery at a large hospital between January 2014 and December 2017 were enrolled.The women were divided into PPH(n=287)and non-PPH(n=4,350)groups.A model to predict PPH(blood loss≥1,000 mL within 24 h following cesarean delivery)was developed using multivariate logistic regression analysis.Receiver operating characteristic curve was drawn,and the area under curve(AUC)was calculated.Results:The incidence of PPH was 6.19%(287 of 4,637 women).Seven independent risk factors were associated with PPH:maternal age(odds ratio[OR]=1.42,95%confidence interval[CI]:1.02-1.97),previous gravidity(OR=1.24,95%CI:1.01-1.50),placental location(posterior wall of uterus,OR=0.69,95%CI:0.47-1.02;other locations,OR=1.21,95%CI:0.81-1.80),placenta previa(incomplete placenta previa,OR=10.51,95%CI:5.99-18.42;complete placenta previa,OR=31.65,95%CI:21.07-47.54),placenta accreta(OR=6.39,95%CI:4.02-10.16),hypertensive disorders of pregnancy(OR=2.27,95%CI:1.40-3.68),and fetal position(breech position,OR=2.07,95%CI:1.19-3.60;transverse position,OR=1.07,95%CI:0.48-2.41).A predictive model with AUC of 0.89 was developed(95%CI:0.86-0.91,P<0.001).Conclusions:A model was developed to predict PPH following cesarean delivery in women with a scarred uterus.展开更多
Objective::To compare the effects between carbetocin and oxytocin on reducing postpartum hemorrhage(PPH)after vaginal delivery in high risk pregnant women.Methods::A prospective double-blinded randomized study was con...Objective::To compare the effects between carbetocin and oxytocin on reducing postpartum hemorrhage(PPH)after vaginal delivery in high risk pregnant women.Methods::A prospective double-blinded randomized study was conducted in the Nanjing Drum Tower Hospital from March to May 2018.Women at or beyond 28 gestational weeks,cephalic presentation,18-45 years old,and with at least one risk factor for PPH,were enrolled.Using a computer-generated randomization sequence,women were randomized to carbetocin group or oxytocin group which receive 100μg intravenous infusion carbetocin or 10 IU intravenous infusion of oxytocin after anterior shoulder and before placental delivery.The primary outcome was the incidence of blood loss≥500 mL within 24 hours postpartum.The secondary outcomes were amount of total blood loss,blood loss within 2 hours after delivery,the rate of blood loss≥1000 mL postpartum,need for a second-line uterotonics and interventions,blood transfusion,difference between hemoglobin before and 48 hours after delivery,adverse maternal events attributed to the trial medication.Hemodynamic status(blood pressure and pulse)was measured at 0 minutes,30 minutes,60 minutes,and 120 minutes after delivery.Results::A total of 314 and 310 participants constituted the carbetocin and oxytocin groups,respectively.The baseline characteristics were comparable between the groups.The carbetocin group had similar rates of PPH(blood loss≥500 mL)and rates of≥1000 mL PPH,(29.6%vs.26.8%,P=0.48)and(3.2%vs.3.5%,P=0.83),to the oxytocin group.The average amount of bleeding was(422.9±241.4)mL in carbetocin group and(406.0±257.5)mL in oxytocin group,which was no statistically significant difference(P=0.40).Either the amount of blood loss within 2 hours((55.5±33.9)mL vs.(59.9±48.7)mL)was no statistically significant difference(P=0.19).The need for therapeutic uterotonics was 23.9%in carbetocin group and 23.5%in oxytocin group,which was also no statistically difference(P=0.93).The rate of blood transfusion(P=0.62)and hemoglobin change(P=0.07)were not differ between the carbetocin and oxytocin groups.However,the rate of manually removing placenta was significantly different between two groups regarding the need for manually remove of placenta because of uterine bleeding in the third stage of labor(4 cases in carbetocin group vs.13 cases in oxygen group),especially in those after oxytocin-induced or augmented labor(relative risk:3.39,95%confidence interval:1.09-10.52).After delivery,the blood pressure in the carbetocin group tend to be lower than that in the oxytocin group(P>0.05),especially at 30 minutes postpartum(P<0.05),while pulse tend to be simultaneously higher(P>0.05).Conclusion::Among women with high risk of PPH,intravenous carbetocin infusion did not better than oxytocin in the prevention of blood loss≥500 mL after vaginal delivery.展开更多
Background Postpartum hemorrhage, a severe complication during delivery, is one of the leading causes of maternal death. Dopamine and norepinephrine are widely used as first-line therapy. This study aimed at comparing...Background Postpartum hemorrhage, a severe complication during delivery, is one of the leading causes of maternal death. Dopamine and norepinephrine are widely used as first-line therapy. This study aimed at comparing their effects on hemodynamics. Methods A perspective, randomized, parallel-group study was performed. The patients were randomly divided into a dopamine group (maximum dose ≤ 0.2 μg·kg^-1· min^-1) and a norepi-nephrine group (maximum dose ≤ 0.2 μg·kg^-1· min^-1). Both treatments increased the mean arterial pressure (MAP) to more than 70 mmHg. PiCCO was used for monitoring hemodynamic parameters, lactic acid and urine output. Results A total of 73 patients were enrolled in this study. Thirty seven patients were assigned to the dopamine group, 36 patients to the norepinephrine group. Average MAP was increased from 55.2±5.22 mmHg to 71.4±4.67 in dopamine group, and from 54.8±5.87 mmHg to 72.2±4.67 in norepinephrine group. MAP showed a significant increase before and after treatment in both groups (P〈0.001), but no significant difference was found between the two groups (P=0.425). After 6 hours of treatment, the average heart rate ( 101±9.81 ) and cardiac output index (CI, 2.40±0.40 L. min^-1· m^-2) in the norepinephrine group were lower than those of the dopamine group ( 120±16.7 and 3.01±0.38 L· min^-1· m^-2, P〈0.001) The global ejection fraction (GEF, 43.9±3.32% ) and systemic vascular resistance index (SVRI, 3763±229.9 dynes, s·m^-2· cm^-5) of the norepinephrine were higher than those in the dopamine group (37.4±4.77%, 2613±235.6 dynes, s·m^-2· cm^-5, P〈0.001 ). There was a significant difference in urine output between the norepinephrine group (117±17.4 mL/h) and dopamine group (70.7±11.8 mL/h). Conclusions In patients with postpartum hemorrhage, norepinephrine improves the MAP mainly by increasing the myocardial contraction force and the renal perfusion. Therefore, it is recommended as the first choice for the treatment of these patients.展开更多
Objective:To investigate the risk factors of severe postpartum hemorrhage(PPH)in cesarean section of twin pregnancy,and to provide clinical basis for pregnancy management and perioperative obstetric management of twin...Objective:To investigate the risk factors of severe postpartum hemorrhage(PPH)in cesarean section of twin pregnancy,and to provide clinical basis for pregnancy management and perioperative obstetric management of twin pregnancy.Methods:The clinical data of 631 twin pregnancies with gestational age28 weeks delivered by cesarean section at Peking University People's Hospital(PKUPH)from January 2004 to January 2017 were retrospectively analyzed.Methods of conception,the combined weight of twins,serum albumin level before cesarean section,operation time and other factors on the amount of blood loss during cesarean section were analyzed.Results:The proportion of severe PPH was significantly higher in in vitro fertilization-embryo transfer(IVF-ET)group,the combined weight of twins>6000g group,serum albumin before cesarean section<30 g/dl group than in the natural pregnancy group,4000–6000g group,<4000g group and serum albumin30 g/dl group respectively(P<0.05).The proportion of severe PPH in the elective surgery group of twin pregnancy was higher than that in the emergency surgery group,but the difference was not statistically significant(P>0.05).Moreover,according to the surgical indications,the emergency surgery group was divided into premature rupture of membranes(PROM),labor,fetal distress and others groups,no significant difference were detected among these groups(P>0.05).Conclusion:IVF-ET,the combined weight of twins,serum albumin before operation were significantly correlated with severe PPH of twin pregnancies delivered by cesarean section,revealing that it is necessary to strengthen pregnancy management of twin pregnancy.展开更多
文摘Objective:To evaluate the effect of bilateral hypogastric artery ligation(BHGAL)on women's pregnancy outcomes and fertility rates in cases with severe postpartum hemorrhage.Methods:Patients hospitalized in a tertiary care center between 2007 and 2018 were included in the study.The records of cases were obtained from the hospital database,retrospectively.Maternal demographic data,morbidities or complications associated with BHGAL surgery,any additional haemostatic interventional or surgical procedures,preoperative admission and lowest postoperative haematocrit-hemoglobin values,blood products given,type of anaesthesia,intensive care unit(ICU)and length of hospital stay were recorded.In cases without surgical sterilization,future fertility and subsequent pregnancy outcomes were assessed for at least two years after operation.Information was obtained through face-to-face or telephone interviews with patients whose long-term fertility and subsequent pregnancy outcomes were assessed.Results:Sixty-eight patients with BHGAL surgery history were included in the study.26 Of 37 cases(70%)that did not undergo surgical sterilization had a desire for pregnancy after the surgery.Six of these cases(23%)were diagnosed with secondary infertility.The fertility rate of these cases was 77%,and subsequent pregnancy was detected in 20 women.A total of 25 pregnancies,including first and second pregnancies,developed,and 15 of these pregnancies resulted in term delivery,six preterm births,one stillbirth,and three abortions.Conclusions:The postoperative pregnancy rate was found to be higher than the rate of women with infertility problems,and this surgery does not seem to adversely affect pregnancy outcomes.This is a tertiary center experience and cohort studies with large patient series are needed.
基金Supported by Qiandongnan Prefecture Science and Technology Support Plan,No.[2021]11Training of High Level Innovative Talents in Guizhou Province,No.[2022]201701。
文摘BACKGROUND Postpartum hemorrhage(PPH)is a leading cause of maternal mortality,and hysterectomy is an important intervention for managing intractable PPH.Accurately predicting the need for hysterectomy and taking proactive emergency measures is crucial for reducing mortality rates.AIM To develop a risk prediction model for PPH requiring hysterectomy in the ethnic minority regions of Qiandongnan,China,to help guide clinical decision-making.METHODS The study included 23490 patients,with 1050 having experienced PPH and 74 who underwent hysterectomies.The independent risk factors closely associated with the necessity for hysterectomy were analyzed to construct a risk prediction model,and its predictive efficacy was subsequently evaluated.RESULTS The proportion of hysterectomies among the included patients was 0.32%(74/23490),representing 7.05%(74/1050)of PPH cases.The number of deliveries,history of cesarean section,placenta previa,uterine atony,and placenta accreta were identified in this population as independent risk factors for requiring a hysterectomy.Receiver operating characteristic curve analysis of the prediction model showed an area under the curve of 0.953(95%confidence interval:0.928-0.978)with a sensitivity of 90.50%and a specificity of 90.70%.CONCLUSION The model demonstrates excellent predictive power and is effective in guiding clinical decisions regarding PPH in the ethnic minority regions of Qiandongnan,China.
文摘Background: Postpartum hemorrhage (PPH) is the major contributor to maternal mortality and morbidity worldwide as well as in Tanzania. Studies have shown Pre-eclampsia as a risk indicator for Postpartum hemorrhage and D-dimer tends to rise in women with pre-eclampsia. Few studies that have shown the association between D-dimer and PPH have been controversial and differ according to ethnicity and lifestyle. Hence there is no suitable reference interval for D-dimer in predicting Postpartum hemorrhage among women with pre-eclampsia. Broad Objective: This study aimed to assess the association, sensitivity, and specificity of D-dimer as a laboratory predictor of postpartum hemorrhage among women with pre-eclampsia at KCMC hospital. Methodology: This was a hospital-based analytical cross-sectional study conducted at KCMC Hospital in Northern Tanzania from September 2022 to March 2023. A total of 195 women with pre-eclampsia were included in this study. Plasma D-dimer levels were taken from women with pre-eclampsia pre-delivery. Haematocrit was compared before and after delivery, and a fall of 10% was considered as Postpartum hemorrhage together with clinical assessment of the patient. Participants were divided among those who had severe features and those who did not have severe features and were further categorized into those who had PPH and those who did not have PPH. Logistic regression was used to determine the association between D-dimer and PPH adjusting for other factors. The Receiver Operating Curve (ROC) was used to evaluate the predictive value. Results: Higher median D-dimer levels were seen among women who had PPH compared to those who had no PPH. D-dimer was seen to be associated with PPH, thus for every unit increase of µg/ml of D-dimer among women who had pre-eclampsia without severe features there was a 14% significant increase in the odds of having postpartum hemorrhage and a 45% significant increase of having postpartum hemorrhage among those who had pre-eclampsia with severe features. Furthermore, the cut-off point of a D-dimer level of 0.66 µg/ml significantly predicts postpartum hemorrhage with a sensitivity of 75% and specificity of 55%. For those who had no severe features the cut-off point was 0.53 µg/ml with a sensitivity of 95% and specificity of 53%, and for those who had severe features the cut-off point was 3.58 µg/ml with a sensitivity of 50% and specificity of 96%. Conclusion: D-dimer can be used to predict postpartum hemorrhage among pre-eclampsia, especially among those who have severe features. This shows that D-dimer has specificity in predicting PPH in women with pre-eclampsia and can be applied in clinical services to save women from maternal morbidity and mortality. Blood products such as fresh frozen plasma, platelets, and whole blood together with tranexamic acid should be readily available in women with pre-eclampsia especially those with severe features with a D-dimer level of 3.58 µg/ml and above during delivery as they are at high risk of developing PPH.
文摘BACKGROUND Transcatheter arterial embolization(TAE)has been widely used as an effective and a safe treatment method and was often used as an alternative to the surgical management,but there are limited studies on the efficacy and the safety for patients undergoing their secondary postpartum hemorrhage(PPH).AIM To evaluate the usefulness of TAE for secondary PPH focusing on the angiographic findings.METHODS We conducted a research from January 2008 to July 2022 on all 83 patients(mean:32 years,range:24-43 years)presented with secondary PPH and they were treated with TAE in two university hospitals.The medical records and angiography were retrospective reviewed in order to evaluate the patients’characteristics,delivery details,clinical status and peri-embolization management,angiography and embolization details,technical/clinical success and complications.The group with active bleeding sign and the group without it were also compared and analyzed.RESULTS On angiography,46(55.4%)patients showed active bleeding signs such as contrast extravasation(n=37)or pseudoaneurysm(n=8)or both(n=1),and 37(44.6%)patients showed non-active bleeding signs such as only spastic uterine artery(n=2)or hyperemia(n=35).In the active bleeding sign group there were more multiparous patients,low platelet count,prothrombin time prolongation,and high transfusion requirements.The technical success rates were 97.8%(45/46)in active bleeding sign group and 91.9%(34/37)in non-active bleeding sign group,and the overall clinical success rates were 95.7%(44/46)and 97.3%(36/37).An uterine rupture with peritonitis and abscess formation occurred to one patient after the embolization,therefore hysterostomy and retained placenta removal were performed which was a major complication.CONCLUSION TAE is an effective and a safe treatment method for controlling secondary PPH regardless of angiographic findings.
文摘In the immediate postpartum period, women need to be observed by the obstetric nurse so that measures can be taken to prevent hemorrhages and reduce its complications. Most maternal deaths from hemorrhage are preventable with support measures for clinical practice, such as: guiding protocols, training of professionals, organization and management of health services and provision of adequate conditions for the parturition process. Objective: To validate Rangel’s instrument with its application in the Maternity Ward of the General Hospital of Huambo, Angola. Methodology: This is a descriptive study with a quantitative approach. This is the sixth stage, called pre-test, of the Translation and Cultural Adaptation process. This instrument was sent for evaluation by the validators using the electronic data collection form named Google forms, with a seven-point Likert-type scale (from 7—totally agree to 1—totally disagree). The analysis was performed with the Cronbach’s Alpha coefficient index (>0.91) and the Content Validity Index (CVI > 0.98). Results: Of the 10 items of evaluation criteria of the instrument analyzed by the 20 validators, 100% of them obtained a Cronbach’s Alpha index rating of 0.91: clarity;coherence;scientific writing;relevance;sequence;uniqueness and updating. Coverage, item criticality and objectivity reached a Cronbach’s Alpha of 0.95. The Content Validity Index was 0.95 for coverage, coherence, item criticality, scientific writing, relevance and updating. Conclusion: Rangel’s instrument for nursing care aimed at preventing and controlling hemorrhage in the third period of birth, translated into Angolan Portuguese and validated by nurses, through the statistical results obtained in the validation, was considered reliable and necessary for clinical nursing practice in Huambo, Angola. .
文摘Background: Postpartum hemorrhage is one of the main causes of maternal mortality, mainly in underdeveloped countries. Deaths are mostly preventable, and are related to socioeconomic development, organization of health services and professional training. Objective: To systematize alerts for the prevention of postpartum hemorrhage. Method: This is a technical essay developed from reflections on previously produced and published texts about maternal mortality and has hemorrhage as the focus of this study. Results: It presents the concept, classification of hemorrhage, risk factors and their classification, prevention strategies, universal recommendations, pharmacological and non-pharmacological interventions when hemorrhage already exists, bleeding assessment techniques;clinical evaluation, by laboratory examination and by shock index. Conclusions: Hemorrhage is a preventable cause of maternal death through the accomplishment of multiple care. Hospital care must be conducted by qualified professionals and in adequate numbers. The risk diagnosis must be carried out during prenatal care with the recording of clinical data accessible in the health care network. All references studied are not specific to nursing, as hemorrhage prevention requires multidisciplinary action.
文摘Worldwide obstetric hemorrhage remains the leading cause of maternal mortality, accounting for over one quarter of maternal deaths. Over half of these deaths occur in Sub-Saharan Africa with mortality rates of 500 - 1000 per 100,000 births, compared to approximately 5 - 10 in developed countries. Over decades in Sub Saharan Africa preventive measures and treatment protocols have been made to reduce maternal mortality caused by PPH. While rates of postpartum hemorrhage have continued to rise, there is a need to evaluate if its etiology and patterns have changed over time. Broad Objective: This study aims at describing trends in incidence, causes and maternal outcomes of Postpartum Hemorrhage at Muhimbili National Hospital for a period of 7 years. Methodology: This is a retrospective descriptive hospital-based study that has included all cases of postpartum hemorrhage at Muhimbili National Hospital, a tertiary hospital in Tanzania from 2014 to 2020. The data was analyzed using SPSS Version 26 and presented using frequency tables, figures and percentages. The trends of postpartum hemorrhage over time were determined using chi-square test and P-value where less than 0.05 was considered statistically significant. Results: Overall, the incidence of postpartum hemorrhage has been fluctuating over the years with minimum of 1.78% and maximum of 2.87% with no statistical significance. Out of 1113 enrolled cases of PPH, 422 (37.9%) were attributed to genital tears followed by uterine atony 285 (25.6%). A statistically significant increase in linear trend was observed in the postpartum hemorrhage cases due to uterine atony, uterine rupture and sub analysis on genital tears (cervical tear). Overall, there was a statistically significant change in trend of maternal outcomes throughout the years, with a P-value < 0.001 and likelihood of complications increasing over time. Conclusion: The trend in the incidence of postpartum hemorrhage has been fluctuating over the years during the study period. The leading cause of postpartum hemorrhage was genital tears, followed by uterine atony with a significant increase in adverse maternal outcomes over the years. Continuous health education to medical personnel to improve timely and proper diagnosis of women in danger of PPH and timely referral, thus improve maternal morbidity and mortality.
基金This study was supported by the National Natural Science Foundation of China (No. 71173081).
文摘Postpartum hemorrhage (PPH) is one of the most adverse obstetric outcomes. Our aim is to detect the risks of multilevel PPH in different cesarean section (CS) groups [including nulliparous CS with indications, nulliparous CS without indications, repeat cesarean (RC), vaginal birth after cesarean (VBAC), cesarean after vaginal birth (CAVB)]. We conducted a retrospective cohort study, and the data on 127 145 women collected from January 2014 to May 2016 and from 35 tertiary hospitals in Shanxi province, China, were reviewed. Based on the measuring results of PPH, an ordered logistic regression model was used to analyze the adjusted PPH risks for each of the CS groups, and comparisons were drawn between them. Finally, a total of 99 066 nulliparous (77.92%) and 28 079 multiparous (22.08%) women were observed. The number of CS cases was 61 117, and the rate for CS was 48.07%. A total of 10 029 women did not show indications for CS and accounted for 16.41% of the CS parturient, whereas 9103 women underwent a repeated cesarean, with a CS frequency of 14.89%. The number of VBAC cases was 989, whose rate was 9.88% in prior CS women. The number (proportions) of PPH was 3658 (2.88%) in L1 (PPH volume: ≥900 and 〈1500 mL), 520 (0.41%) in L2 (PPH volume: ≥1500 and〈2100 mL), and 201 (0.16%) in L3 (PPH volume: ≥2100 mL). The Ln (n= 1, 2, 3, etc.) represented the increasing order of PPH severity. In the adjusted results, compared with spontaneous vaginal delivery (SVD) as the reference group, in the adjusted result for nulliparous, there was a decreased PPH risk in CS with indications (OR: 2.32; CI: 2.04-2.62), which was lower than that of CS without indications (OR: 2.50; CI: 2.01-2.96). The highest PPH risk in all subgroups (i.e. nulliparous and multiparous groups) was observed in the RC (OR: 3.61; CI: 3.16-4.17), which was nearly twice higher than that of the VBAC (OR: 1.82; CI: 1.33-2.52). CAVB (OR: 1.03; CI: 0.65-1.62) showed no significant difference with the reference group. Thus, we deemed that CS should be avoided in nulliparous pregnancies unless indicated, to prevent or reduce the rates for the use of RC or VBAC which are high risks of severe PPH to the parturient women.
基金supported by Nursing Research Program of Shanghai Nursing Association(No.2016SD-B03)
文摘Objective: Postpartum hemorrhage(PPH) is a leading cause of maternal death. Although guidelines have been updated, those with detailed protocols are limited for nursing practice. This study aims at establishing an early assessment and intervention protocol as a toolkit for PPH for midwives and obstetrical nurses.Methods: Employing the evidence-based method, a systematic Internet search of guidelines was conducted and appraisal of literatures was conducted with AGREE system and Oxman-Guyatt Overview Quality Assessment Questionnaire(OQAQ), according to which a protocol draft was therefore developed. Then, a two-round modified Delphi method was utilized to reach a consensus of the protocol built on best practices. Selection criteria for each intervention measure included consensus level with a threshold of 70%, mean of importance(M) >3.5, and coefficient of variation(CV) <0.25. Reliability of experts' opinion was calculated by positive coefficient and authoritative coefficient. Items without consistency were enlisted in the second-round consult. When all items met the selection criteria, the protocol would be finally formulated.Results: A 122-measure protocol was established, including prevention, assessment, and intervention of PPH. With a panel of 14 experts participated in the consult, the positivity coefficient was 0.93 and 1.00 for two rounds, respectively, and the authority coefficient was 0.88. After a two-round consult and revision of the draft, the final program was formulated, containing 5 first-level indexes and 14 second-level indexes with a total item of 120.Conclusions: The PPH protocol, based on high-quality evidences, was formulated with a two-round Delphi method, which can provide insight for midwives and obstetrical nurses to effectively deal with PPH.
文摘Among the most consolidated dogmas in obstetrics, we have the essential role of oxytocin during: labor by regulating, consolidating uterine contractions, by supporting the expulsive efforts of the patient during childbirth and after childbirth by preventing postpartum hemorrhage. But what challenged us to conduct our study is the large and increasing number of surgical operations for postpartum hemorrhage in patients who received oxytocin during labor. We assumed that the generalization use of oxytocin in all patients during labor is probably responsible of this increasing rate of incidents. To verify this assumption, we carried out a prospective randomized comparative study, involving 3990 pregnant patients admitted at the start of labor at term, with no contraindication for giving birth by normal ways, during a period of 10 months (January-October 2022). The patients have been divided into 2 groups. The first group comprises 1991 patients who were placed on admission on a glucose serum infusion with 4 ampoules of a non-anticholinergic musculotropic antispasmodic: “Hydrated phloroglucinol + trimethylphloroglucinol” (Each ampoule contains 40 mg of hydrated phloroglucinol and 0.04 mg of trimethylphloroglucinol) instead of receiving oxytocin during the active phase of their labor and a second group consisting of 1999 patients who received oxytocin during the active phase of their labor. The results were very surprising and contrary to the already consolidated evidence in our specialty. Indeed, the rate of postpartum hemorrhages was 10 patients (0.5%) in the 1st group vs 30 patients (1.5%) in the 2nd group, 9 patients (0.4%) presented fetal heart rate abnormalities in the 1st group vs 90 (4.5%) in the 2nd group, 8 cases (0.4%) of dynamic dystocia in the 1st group vs 132 cases (6.6%) in the 2nd group and 99 caesareans (5%) in the 1st group vs 299 (15%) in the 2nd group. Against all expectations the results were very surprising, with more details in the article.
文摘Objective:To investigate the effect of misoprostol and oxytocin combined with calcium gluconate on parturient with high-risk postpartum hemorrhage.Methods:The clinical data of 80 parturient with high-risk postpartum hemorrhage who were treated in our hospital from July 2016 to July 2019 were retrospectively analyzed.According to different treatment methods,they were divided into control group(treated with misoprostol combined with oxytocin,40 cases)and observation group(treated with misoprostol and oxytocin combined with calcium gluconate,40 cases),compared the clinical efficacy,delivery time,postpartum hemorrhage 2 hour after delivery,postpartum hemorrhage 24 hours after delivery and Apgar score of the newborns at 1min after birth.Results:The total effective rate(95.00%)in the observation group was higher than that in the control group(77.50%),and the difference was statistically significant(P<0.05).The third delivery stage in the observation group was shorter than that in the control group,and the postpartum hemorrhage volume was less than that in the control group.The difference was statistically significant(P<0.05).There was no significant difference in Apgar score of the two groups of newborns(P>0.05).Conclusion:Misoprostol and oxytocin combined with calcium gluconate is effective in treating high-risk postpartum hemorrhage parturient,which not only can effectively reduce postpartum hemorrhage and shorten the delivery time,but also is beneficial for neonatal outcome and worthy of clinical application.
文摘Introduction: Postpartum hemorrhage (PPH) is one of the leading causes of maternal death in the world and it is reported to occur in 5% - 8% of pregnancies. Objective: This study aimed to present a single centre’s experience in treating PPH by balloon tamponade. Methods: During the time period between January 2013 and March 2016, 50 patients who had undergone balloon tamponade for postpartum hemorrhage in our clinic were evaluated retrospectively. The patients’ age, parity, type of delivery, birth weight, hemoglobin and platelet values, total blood loss from catheter, balloon’s staying time, blood and platelet transfusion status, the presence of placenta anomalies and the Bakri balloon hemostasis success rate were evaluated. Results: During the study period, there were 27,249 deliveries. The frequency of massive postpartum hemorrhage was 0.61% (n = 168). Among the 168 patients with massive postpartum hemorrhage, there were 50 patients in whom the Bakri balloon catheter was used. Bakri balloons were placed via cesarean section incision in 19 patients and via vagina in 31 patients. The mean staying time of Bakri balloon was 18 hours. In 8 patients, balloon tamponade failed. Two patients underwent hysterectomy;other two patients had surgical ligation of the hypogastric artery. Four cases were referred to a tertiary center. Placental invasion abnormalities were observed in five patients. The overall Bakri balloon hemostasis successful rate was found to be as 84% in all cases. Conclusion: Bakri balloon tamponade is an effective, safe and practical approach in the treatment of postpartum hemorrhage.
文摘Postpartum hemorrhage is a serious complication of preeclampsia.The main influencing factors of Preeclampsia on postpartum hemorrhage include vascular disease,trophoblast differentiation and infiltration disorder,the influence of antispasmodic,sedative and antihypertensive drugs,the incidence of hypertensive disorder complicating pregnancy related to calcium deficiency,coagulation dysfunction,and decreased blood volume during pregnancy.In recent years,postpartum hemorrhage has been the leading cause of maternal death in the world.Therefore,it is critical to understand the influencing factors of preeclampsia on postpartum hemorrhage.Based on the research and guidelines of preeclampsia and postpartum hemorrhage in recent years,this paper analyzes the influencing factors of preeclampsia on postpartum hemorrhage,and provides new ideas for clinical reduction of postpartum hemorrhage.
基金Major Program of the National Natural Science Foundation of China(No.81490745)State Key Development Program for Basic Research of China(No.2015CB943304)
文摘Background:The APPEC study is a large-population randomized controlled trial in China evaluating the role of low-dose aspirin prophylactic treatment for pre-eclampsia.There was no statistically significant difference in postpartum hemorrhage(PPH)incidence between the aspirin and control groups.This study aimed to evaluate the potential bleeding risk of 100 mg aspirin in high-risk pregnant women and the difference in the incidence of PPH according to maternal characteristics.Methods:This is a secondary data analysis of the APPEC study.Platelet counts and coagulation test results were collected at five follow-up visits.Subgroups defined by maternal age(<35 years and≥35 years),pre-pregnancy body mass index(pre-BMI,<28 kg/m 2 and≥28 kg/m 2),parity,gestational age at enrollment,and medical history,including pre-eclampsia,chronic hypertension,and diabetes mellitus,were analyzed.Logistic regression analysis was used to determine the statistical significance of the difference in the incidence of PPH after aspirin administration in pregnant women in each subgroup.Adjustment using multiple logistic regression models followed these analyses.Binary logistic regression was used to determine the relationship between pre-BMI and PPH.Results:There was no significant difference between the aspirin and control groups in bleeding risk(3.4%[16/464]vs.3.0%[13/434],T=0.147,P=0.701).No significant difference was found in the incidence of PPH in total(relative risk=1.220,95%confidence interval[CI]=0.720–2.067,P=0.459;aspirin group vs.control group,6.5%[30/464]vs.5.3%[23/434],P=0.459)or in subgroup analysis.A significant correlation between pre-BMI and PPH was found in the aspirin group,while in the control group there was no significant correlation(aspirin group,odds ratio[OR]=1.086,95%CI=1.004–1.175,P=0.040;control group,OR=1.060,95%CI=0.968–1.161,P=0.209).Conclusions:A dosage of 100 mg of aspirin per day,initiated from 12 to 20 gestational weeks until 34 weeks of gestation,did not increase the risk of potential bleeding and PPH regardless of the maternal characteristic.In the aspirin group,the positive correlation between BMI and PPH was significant.Trial Registration:ClinicalTrials.gov,NCT01979627.
文摘Background Postpartum hemorrhage(PPH)could be avoided by identifying high-risk women.The objective of this systematic review is to determine PPH predictors using machine learning(ML)approaches.Method This strategy included searching for studies from inception through November 2022 through the database included:Cochrane Central Register,PubMed,MEDLINE,EMBASE,ProQuest,Scopus,WOS,IEEE Xplore,and the Google Scholar database.The search methodology employed the PICO framework(population,intervention,control,and outcomes).In this study,“P”represents PPH populations,“I”represents the ML approach as intervention,“C”represents the traditional statistical analysis approach as control,and“O”represents prediction and diagnosis outcomes.The quality assessment of each included study was performed using the PROBAST methodology.Results The initial search strategy resulted in 2048 citations,which were subsequently refined by removing duplicates and irrelevant studies.Ultimately,four studies were deemed eligible for inclusion in the review.Among these studies,three were classified as having a low risk of bias,while one was considered to have a low to moderate risk of bias.A total of 549 unique variables were identified as candidate predictors from the included studies.Nine distinct models were chosen as ML algorithms from the four studies.Each of the four studies employed different metrics,such as the area under the curve,false positive rate,false negative rate,and sensitivity,to report the accuracy of their models.The ML models exhibited varying accuracies,with the area under the curve(AUC)ranging from 0.706 to 0.979.Several weighted predictors were identified as significant factors in PPH risk prediction.These included pre-pregnancy maternal weight,maternal weight at the time of admission,fetal macrosomia,gestational age,level of hematocrit at the time of admission,shock index,frequency of contractions during labor,white blood cell count,pregnancy-induced hypertension,the weight of the newborn,duration of the second stage of labor,amniotic fluid index,body mass index,and cesarean delivery before labor.These factors were determined to have a notable influence on the prediction of PPH risk.Conclusion The findings from ML models used to predict PPH are highly encouraging.
文摘Background: The reports on massive transfusions (MTs) in obstetrics have recently been an increasing trend. We aimed to define the clinical features, risk factors, main causes, and outcomes of MTs due to severe postpartum hemorrhage (PPH) and the frequency trends over the past 10 years. Methods: We retrospectively analyzed the data of 3552 PPH patients who were at ≥28 weeks of gestation in the Obstetric Department of Peking University First Hospital from January 2006 to February 2015. The clinical records of patients receiving MT with ≥5 units (approximately 1000 ml) of red blood cells within 24 h of giving birth were included. The Pearson's Chi-square and Fisher's exact tests were used to compare the frequency distributions among the categorical variables of the clinical features. Results: One-hundred six women were identified with MT over the 10-year period. The MT percentage was stable between the first 5-year group (2006-2010) and the second 5-year group (2011-2015) (2.5‰ vs. 2.7‰, χ^2 = 154.85, P = 0.25). Although uterine atony remained the main cause of MT, there was a rising trend for placental abnormalities (especially placenta accreta) in the second 5-year group compared with the first 5-year group (34% vs. 23%, χ^2 = 188.26, P = 0.03). Twenty-four (23%) women underwent hysterectomy, and among all the causes of PPH, placenta accreta had the highest hysterectomy rate of 70% (17/24). No maternal death was observed. Conclusions: There was a rising trend for placental abnormalities underlying the stable incidence of MT in the PPH cases. Placenta accreta accounted for the highest risk of hysterectomy. It is reasonable to have appropriate blood transfusion backup for high-risk patients, especially those with placenta accreta.
基金supported by the National Key R&D Program of China(2016YFC1000404)the National Natural Science Foundation of China(General Program+3 种基金81370735)the National Natural Science Foundation of China(General Program81771610)the Outstanding Scientific Fund of Shengjing Hospital(201706).
文摘Objective:To develop a model to predict the risk of postpartum hemorrhage(PPH)following cesarean delivery in women with a scarred uterus.Methods:A total of 4,637 pregnant women with scarred uterus who underwent a cesarean delivery at a large hospital between January 2014 and December 2017 were enrolled.The women were divided into PPH(n=287)and non-PPH(n=4,350)groups.A model to predict PPH(blood loss≥1,000 mL within 24 h following cesarean delivery)was developed using multivariate logistic regression analysis.Receiver operating characteristic curve was drawn,and the area under curve(AUC)was calculated.Results:The incidence of PPH was 6.19%(287 of 4,637 women).Seven independent risk factors were associated with PPH:maternal age(odds ratio[OR]=1.42,95%confidence interval[CI]:1.02-1.97),previous gravidity(OR=1.24,95%CI:1.01-1.50),placental location(posterior wall of uterus,OR=0.69,95%CI:0.47-1.02;other locations,OR=1.21,95%CI:0.81-1.80),placenta previa(incomplete placenta previa,OR=10.51,95%CI:5.99-18.42;complete placenta previa,OR=31.65,95%CI:21.07-47.54),placenta accreta(OR=6.39,95%CI:4.02-10.16),hypertensive disorders of pregnancy(OR=2.27,95%CI:1.40-3.68),and fetal position(breech position,OR=2.07,95%CI:1.19-3.60;transverse position,OR=1.07,95%CI:0.48-2.41).A predictive model with AUC of 0.89 was developed(95%CI:0.86-0.91,P<0.001).Conclusions:A model was developed to predict PPH following cesarean delivery in women with a scarred uterus.
文摘Objective::To compare the effects between carbetocin and oxytocin on reducing postpartum hemorrhage(PPH)after vaginal delivery in high risk pregnant women.Methods::A prospective double-blinded randomized study was conducted in the Nanjing Drum Tower Hospital from March to May 2018.Women at or beyond 28 gestational weeks,cephalic presentation,18-45 years old,and with at least one risk factor for PPH,were enrolled.Using a computer-generated randomization sequence,women were randomized to carbetocin group or oxytocin group which receive 100μg intravenous infusion carbetocin or 10 IU intravenous infusion of oxytocin after anterior shoulder and before placental delivery.The primary outcome was the incidence of blood loss≥500 mL within 24 hours postpartum.The secondary outcomes were amount of total blood loss,blood loss within 2 hours after delivery,the rate of blood loss≥1000 mL postpartum,need for a second-line uterotonics and interventions,blood transfusion,difference between hemoglobin before and 48 hours after delivery,adverse maternal events attributed to the trial medication.Hemodynamic status(blood pressure and pulse)was measured at 0 minutes,30 minutes,60 minutes,and 120 minutes after delivery.Results::A total of 314 and 310 participants constituted the carbetocin and oxytocin groups,respectively.The baseline characteristics were comparable between the groups.The carbetocin group had similar rates of PPH(blood loss≥500 mL)and rates of≥1000 mL PPH,(29.6%vs.26.8%,P=0.48)and(3.2%vs.3.5%,P=0.83),to the oxytocin group.The average amount of bleeding was(422.9±241.4)mL in carbetocin group and(406.0±257.5)mL in oxytocin group,which was no statistically significant difference(P=0.40).Either the amount of blood loss within 2 hours((55.5±33.9)mL vs.(59.9±48.7)mL)was no statistically significant difference(P=0.19).The need for therapeutic uterotonics was 23.9%in carbetocin group and 23.5%in oxytocin group,which was also no statistically difference(P=0.93).The rate of blood transfusion(P=0.62)and hemoglobin change(P=0.07)were not differ between the carbetocin and oxytocin groups.However,the rate of manually removing placenta was significantly different between two groups regarding the need for manually remove of placenta because of uterine bleeding in the third stage of labor(4 cases in carbetocin group vs.13 cases in oxygen group),especially in those after oxytocin-induced or augmented labor(relative risk:3.39,95%confidence interval:1.09-10.52).After delivery,the blood pressure in the carbetocin group tend to be lower than that in the oxytocin group(P>0.05),especially at 30 minutes postpartum(P<0.05),while pulse tend to be simultaneously higher(P>0.05).Conclusion::Among women with high risk of PPH,intravenous carbetocin infusion did not better than oxytocin in the prevention of blood loss≥500 mL after vaginal delivery.
基金supported by Daxing District Beijing science and Technology Committee(No.201357-2)
文摘Background Postpartum hemorrhage, a severe complication during delivery, is one of the leading causes of maternal death. Dopamine and norepinephrine are widely used as first-line therapy. This study aimed at comparing their effects on hemodynamics. Methods A perspective, randomized, parallel-group study was performed. The patients were randomly divided into a dopamine group (maximum dose ≤ 0.2 μg·kg^-1· min^-1) and a norepi-nephrine group (maximum dose ≤ 0.2 μg·kg^-1· min^-1). Both treatments increased the mean arterial pressure (MAP) to more than 70 mmHg. PiCCO was used for monitoring hemodynamic parameters, lactic acid and urine output. Results A total of 73 patients were enrolled in this study. Thirty seven patients were assigned to the dopamine group, 36 patients to the norepinephrine group. Average MAP was increased from 55.2±5.22 mmHg to 71.4±4.67 in dopamine group, and from 54.8±5.87 mmHg to 72.2±4.67 in norepinephrine group. MAP showed a significant increase before and after treatment in both groups (P〈0.001), but no significant difference was found between the two groups (P=0.425). After 6 hours of treatment, the average heart rate ( 101±9.81 ) and cardiac output index (CI, 2.40±0.40 L. min^-1· m^-2) in the norepinephrine group were lower than those of the dopamine group ( 120±16.7 and 3.01±0.38 L· min^-1· m^-2, P〈0.001) The global ejection fraction (GEF, 43.9±3.32% ) and systemic vascular resistance index (SVRI, 3763±229.9 dynes, s·m^-2· cm^-5) of the norepinephrine were higher than those in the dopamine group (37.4±4.77%, 2613±235.6 dynes, s·m^-2· cm^-5, P〈0.001 ). There was a significant difference in urine output between the norepinephrine group (117±17.4 mL/h) and dopamine group (70.7±11.8 mL/h). Conclusions In patients with postpartum hemorrhage, norepinephrine improves the MAP mainly by increasing the myocardial contraction force and the renal perfusion. Therefore, it is recommended as the first choice for the treatment of these patients.
文摘Objective:To investigate the risk factors of severe postpartum hemorrhage(PPH)in cesarean section of twin pregnancy,and to provide clinical basis for pregnancy management and perioperative obstetric management of twin pregnancy.Methods:The clinical data of 631 twin pregnancies with gestational age28 weeks delivered by cesarean section at Peking University People's Hospital(PKUPH)from January 2004 to January 2017 were retrospectively analyzed.Methods of conception,the combined weight of twins,serum albumin level before cesarean section,operation time and other factors on the amount of blood loss during cesarean section were analyzed.Results:The proportion of severe PPH was significantly higher in in vitro fertilization-embryo transfer(IVF-ET)group,the combined weight of twins>6000g group,serum albumin before cesarean section<30 g/dl group than in the natural pregnancy group,4000–6000g group,<4000g group and serum albumin30 g/dl group respectively(P<0.05).The proportion of severe PPH in the elective surgery group of twin pregnancy was higher than that in the emergency surgery group,but the difference was not statistically significant(P>0.05).Moreover,according to the surgical indications,the emergency surgery group was divided into premature rupture of membranes(PROM),labor,fetal distress and others groups,no significant difference were detected among these groups(P>0.05).Conclusion:IVF-ET,the combined weight of twins,serum albumin before operation were significantly correlated with severe PPH of twin pregnancies delivered by cesarean section,revealing that it is necessary to strengthen pregnancy management of twin pregnancy.