Effect of blood gas analysis in patients with bed rest and blood sampling through the dorsal artery:A meta-analysis

Objective:To systematic evaluation by the dorsalis pedis artery puncture for bed patients blood gas analysis of application effect of impact.Methods:A randomized controlled trial of the effect of arterial blood extraction on blood gas analysis in PubMed,CNKI,Wanfang database and VIP database.After selecting the literature,extracting the data and evaluating the quality of the literature.Meta- analysis was carried out by RevMan 5.3 software.Results:Twelve randomized controlled trials were included and 1696 patients were enrolled.After meta-analysis,the arterial puncture can effectively improve the success of arterial puncture in patients with bed [Z = 5.78,95%CI(1.90,3.66),P<0.001],reduce the occurrence of hematoma [Z = 4.27,95%CI(0.19,0.54),P<0.001],reduce the mistaken into the vein [Z = 4.60,95%CI(0.08,0.36),P<0.001],reduce cyanosis [Z = 2.84,95%CI(0.23,0.81),P<0.008],the difference was statistically significant.Conclusion:Dorsalis pedis artery puncture can improve the success rate of blood gas analysis in bedridden patients,reduce the incidence of hematoma and the incidence of venous leakage,and can be widely used in clinical practice.

Accuracy of a hand-held lactate meter in measuring umbilical cord blood lactate at all lactate levels

Objective: Fetal scalp lactate has largely replaced pH analysis to assess intrapartum hypoxia. Many obstetrics units use hand-held lactate meters to measure umbilical blood because of its affordability and ease of use. We sought to investigate the agreement of Lactate ProTM with a reference method blood gas analyser and to determine its usefulness with a recommended cutoff value of 4.8 mmol/L. Methods: Prospective study carried out at a tertiary institution where 237 arterial and 233 venous samples from umbilical cords of 16 elective caesarean and 285 emergency deliveries were measured using Lactate ProTM and ABL735 Sesries Acid-Base analyser. Limits of agreement were analysed using Bland-Altman plots. Results: Lactate ProTM differentiated fewer deliveries as “high risk” (≥4.8 mmol/L) and more as “low risk” (<2.2 mmol/L). Limits of agreement for lactate values (as measured by Lactate ProTM) were –1.46 - 0.97 mmol/L for arterial lactate levels <4.8 mmol/L and –3.21 - 0.88 mmol/L for arterial lactate levels ≥ 4.8 mmol/L. Conclusion: There was a poorer agreement between the two devices at higher lactate values. Lactate ProTM underestimates by up to 3.2 mmol/L;a 4.8 mmol/L reading may actually signify a lactate level of 8.0 mmol/L, indicating severe metabolic acidosis. We caution the use of this device in assessing fetal lactate levels.

Stem cell transplantation for spinal cord injury： a meta-analysis of treatment effectiveness and safety

OBJECTIVE： The aim of this study was to evaluate the effectiveness and safety of stem cell transplantation for spinal cord injury（SCI）.DATA SOURCES： PubM ed, EMBASE, Cochrane, China National Knowledge Infrastructure, China Science and Technology Journal, Wanfang, and Sino Med databases were systematically searched by computer to select clinical randomized controlled trials using stem cell transplantation to treat SCI, published between each database initiation and July 2016. DATA SELECTION： Randomized controlled trials comparing stem cell transplantation with rehabilitation treatment for patients with SCI. Inclusion criteria：（1） Patients with SCI diagnosed according to the American Spinal Injury Association（ASIA） International standards for neurological classification of SCI;（2） patients with SCI who received only stem cell transplantation therapy or stem cell transplantation combined with rehabilitation therapy;（3） one or more of the following outcomes reported： outcomes concerning neurological function including sensory function and locomotor function, activities of daily living, urination functions, and severity of SCI or adverse effects. Studies comprising patients with complications, without full-text, and preclinical animal models were excluded. Quality of the included studies was evaluated using the Cochrane risk of bias assessment tool and Rev Man V5.3 software, provided by the Cochrane Collaboration, was used to perform statistical analysis. OUTCOME MEASURES： ASIA motor score, ASIA light touch score, ASIA pinprick score, ASIA impairment scale grading improvement rate, activities of daily living score, residual urine volume, and adverse events.RESULTS： Ten studies comprising 377 patients were included in the analysis and the overall risk of bias was relatively low level. Four studies did not detail how random sequences were generated, two studies did not clearly state the blinding outcome assessment, two studies lacked blinding outcome assessment, one study lacked follow-up information, and four studies carried out selective reporting. Compared with rehabilitation therapy, stem cell transplantation significantly increased the lower limb light touch score（odds ratio（OR） = 3.43, 95% confidence interval（CI）： 0.01 – 6.86, P = 0.05）, lower limb pinprick score（OR = 3.93, 95%CI： 0.74 – 7.12, P = 0.02）, ASI grading rate（relative risk（RR） = 2.95, 95%CI： 1.64 – 5.29, P = 0.0003）, and notably reduced residual urine volume（OR = –8.10, 95%CI： –15.09 to –1.10, P = 0.02）. However, stem cell transplantation did not significantly improve motor score（OR = 1.89, 95%CI： –0.25 to 4.03, P = 0.08） or activities of daily living score（OR = 1.12, 95%CI： –1.17 to 4.04, P = 0.45）. Furthermore, stem cell transplantation caused a high rate of mild adverse effects（RR = 14.49, 95%CI： 5.34 – 34.08, P 〈 0.00001）; however, these were alleviated in a short time. CONCLUSION： Stem cell transplantation was determined to be an efficient and safe treatment for SCI and simultaneously improved sensory and bladder functions. Although associated minor and temporary adverse effects were observed with transplanted stem cells, spinal cord repair and axon remyelination were apparent. More randomized controlled trials with larger sample sizes and longer follow-up times are needed to further validate the effectiveness of stem cell transplantation in the treatment of SCI.

Correlation between the umbilical artery flow ultrasound parameters of intrauterine fetal distress and fetal ischemic hypoxic damage

Objective: To study the correlation between the umbilical artery flow ultrasound parameters of intrauterine fetal distress and fetal ischemic hypoxic damage. Methods: A total of 158 puerperae who gave birth in our hospital between July 2016 and June 2017 were selected and divided into the intrauterine distress group (Apgar<7 points) and normal pregnancy group (Apgar≥7 points) according to the neonatal Apgar score, the umbilical artery flow ultrasound parameters at 24-30 weeks, 31-36 weeks and 37-41 weeks of gestation were determined, and the umbilical arterial blood gas parameters and oxidative stress molecule levels were determined. Results: At 24-30 weeks, 31-36 weeks and 37-41 weeks of gestation, umbilical arterial RI, PI and S/D of intrauterine distress group were significantly higher than those of normal pregnancy group;umbilical arterial pH and PaO2 of intrauterine distress group were significantly lower than those of normal pregnancy group and negatively correlated with RI, PI and S/D while PaCO2 and lactic acid levels were significantly higher than those of normal pregnancy group and positively correlated with RI, PI and S/D;SOD, GSH-px and CAT levels in umbilical artery of intrauterine distress group were significantly lower than those of normal pregnancy group and negatively correlated with RI, PI and S/D while MDA and 8-OHdG levels were significantly higher than those of normal pregnancy group and positively correlated with RI, PI and S/D. Conclusion: Umbilical artery flow ultrasound characteristics of intrauterine fetal distress are characterized by the increased resistance and decreased blood flow and are correlated with the degree of fetal hypoxia and oxidative stress.

The Clinical Value of Artery Umbilical Cord Blood Gas in Predicting Neonate Condition:A Prospective Cohort Study

Objective:To evaluate the predictive ability of neonate condition through the traditional parameters and artery umbilical cord blood gas(aUCBG).Methods:A prospective cohort study was conducted in obstetrics and gynecology department between October 2017 and August 2018 at Tongji Hospital in Wuhan,China,and 360 aUCBG samples were collected.The average age of pregnant women was(29.50±4.42)years,range from 19 to 48 years old.The gestational age range from 28+4 weeks to 41+3 weeks at admission.Logistic regression and area under the curve(AUC)from Receiver operating characteristic curves were used to identify risk factors,such as,premature rupture of membranes(PROM),high blood pressure,premature delivery(PD),low 1-minute Apgar scores(Apgar 1),low 5-minute Apgar scores(Apgar 5),pH,base excess,bicarbonate,neonatal blood sugar(NBS),and so on,to predict neonatal condition and evaluate the predictive ability of traditional and aUCBG parameters.Results:In all cases,PROM,PD,Apgar 1,Apgar 5,pH,base excess,bicarbonate,total carbon dioxide,and neonatal blood sugar were risk factors and were associated with poor condition of neonate.Apgar 1 were an independent risk factor.Combined traditional and aUCBG parameters had higher AUC of 0.895(95%confidence interval(C/):0.830-0.960,P<0.001).In cesarean section subgroup,high blood pressure,PD,and Apgar 1 were risk factors and were associated with poor condition of neonate.Apgar 1 and low pH were the independent risk factors.Combined traditional and aUCBG parameters had highest AUC of 0.940(95%C/:0.886-0.993,P<0.001).In vaginal delivery subgroup,maternal age above 35 years,PROM,PD,Apgar 1,Apgar 5,and male newborn were risk factors and were associated with poor condition of neonate.Maternal age above 35 years was an independent risk factor.Combined traditional and aUCBG parameters had highest AUC of 0.897(95%Cl:0.828-0.965,P<0.001).For pregnant women without comorbidities and complications of pregnancy,aUCBG may not be necessat7.Conclusion:In high-risk pregnancies,especially lower Apgar scores,PD,and maternal age above 35-year old,aUCBG is recommended.Traditional parameters combined with aUCBG might increase the predicting ability of neonate condition.

A retrospective analysis of the relationship between dermatomyositis-associated interstitial lung disease and disease duration,age,arterial blood gas pH,and serum Cl^(-) levels

Background:Dermatomyositis-associated interstitial lung disease(DM-ILD)represents a severe and insidious complication of dermatomyositis(DM).The study aimed to investigate the association between DM-ILD and arterial blood gas indices,serum ion levels,and the timing of interstitial lung disease onset,with the goal of identifying potential predictors for DM-ILD.Methods:The investigation involved the collection of basic data from 89 patients with DM hospitalized at the Chinese PLA General Hospital between January 2019 and April 2022,and 43 normal control patients hospitalized for physical examinations during the same period.Analyses were conducted to explore the relationship between DM-ILD,arterial blood gas indices,disease duration,and serum ions.A regression model to predict DM-ILD was developed using these indices,and a receiver operating characteristic curve was generated.Results:Significant differences were observed in pH and PaO_(2) between the control group and the disease group(p<0.05).The DM group exhibited higher levels of pH,actual bicarbonate,and base excess(BE)compared with the control group.In contrast,pH and BE levels were lower in the DM-ILD group than in the DM group,with these differences being statistically significant(p<0.05).Interstitial lung disease was correlated with the duration of the disease and pH levels(p<0.05).The cutoff values for age,disease duration,pH,and Cl^(-) were 55.5 years,5.5 years,7.432,and 101.5 mmol/L,respectively.The model demonstrated a prediction sensitivity and specificity for DM-ILD of 0.809 and 0.722,respectively,with an area under the curve of 0.809.Conclusion:Arterial blood gas analysis and serum Cl^(-) levels may assist in predicting DM-ILD.A combined monitoring approach involving arterial blood gas pH,disease duration,age,and serum Cl^(-) levels could enhance the accuracy of DM-ILD predictions and hold significant clinical evaluation potential.

Stem cell treatment and cerebral palsy: Systemic review and meta-analysis

BACKGROUND Perinatal complications may result in life-long morbidities,among which cerebral palsy(CP)is the most severe motor disability.Once developed,CP is a nonprogressive disease with a prevalence of 1-2 per 1000 live births in developed countries.It demands an extensive and multidisciplinary care.Therefore,it is a challenge for our health system and a burden for patients and their families.Recently,stem cell therapy emerged as a promising treatment option and raised hope in patients and their families.AIM The aim is to evaluate the efficacy and safety of stem cell treatment in children with CP using a systematic review and meta-analysis METHODS We performed a systematic literature search on PubMed and EMBASE to find randomized controlled clinical trials(RCT)investigating the effect of stem cell transplantation in children with CP.After the review,we performed a randomeffects meta-analysis focusing on the change in gross motor function,which was quantified using the gross motor function measure.We calculated the pooled standardized mean differences of the 6-and/or 12-mo-outcome by the method of Cohen.We quantified the heterogeneity using the I-squared measure.RESULTS We identified a total of 8 RCT for a qualitative review.From the initially selected trials,5 met the criteria and were included in the meta-analysis.Patients’population ranged from 0.5 up to 35 years(n=282).We detected a significant improvement in the gross motor function with a pooled standard mean difference of 0.95(95%confidence interval:0.13-1.76)favoring the stem cell group and a high heterogeneity(I2=90.1%).Serious adverse events were rare and equally distributed among both intervention and control groups.CONCLUSION Stem cell therapy for CP compared with symptomatic standard care only,shows a significant positive effect on the gross motor function,although the magnitude of the improvement is limited.Short-term safety is present and further highquality RCTs are needed.

Algorithm-based arterial blood sampling recognition increasing safety in point-of-care diagnostics

AIM To detect blood withdrawal for patients with arterial blood pressure monitoring to increase patient safety and provide better sample dating.METHODS Blood pressure information obtained from a patient monitor was fed as a real-time data stream to an experimental medical framework. This framework was connected to an analytical application which observes changes in systolic, diastolic and mean pressure to determine anomalies in the continuous data stream. Detection was based on an increased mean blood pressure caused by the closing of the withdrawal three-way tap and an absence of systolic and diastolic measurements during this manipulation. For evaluation of the proposed algorithm, measured data from animal studies in healthy pigs were used.RESULTS Using this novel approach for processing real-time measurement data of arterial pressure monitoring, the exact time of blood withdrawal could be successfully detected retrospectively and in real-time. The algorithm was able to detect 422 of 434(97%) blood withdrawals for blood gas analysis in the retrospective analysis of 7 study trials. Additionally, 64 sampling events for other procedures like laboratory and activated clotting time analyses were detected. The proposed algorithm achieved a sensitivity of 0.97, a precision of 0.96 and an F1 score of 0.97.CONCLUSION Arterial blood pressure monitoring data can be used toperform an accurate identification of individual blood samplings in order to reduce sample mix-ups and thereby increase patient safety.

脐动脉血气指标联合Apgar评分评估新生儿窒息的应用价值

目的分析脐动脉血气指标联合Apgar评分应用于评估新生儿窒息的价值。方法选取我院2021年1月至2023年3月收治的157例1min Apgar评分≤7分的新生儿作为研究组,另选同期160例1min Apgar评分≥8分的新生儿作为对照组,采集两组新生儿脐动脉血气指标[血液酸碱度(pH值)、动脉血氧分压(PaO_(2))、动脉血二氧化碳分压(PaCO_(2))、碳酸氢根(HCO_(3)^(-))、碱剩余(BE)和二氧化碳结合力(CO_(2)CP)]及脏器损伤的数据,分析Apgar评分和脐动脉血气指标对新生儿脏器损伤的预测效能。结果分析Apgar评分、pH值、PaO_(2)、PaCO_(2)、HCO_(3)^(-)、BE,研究组显著低于对照组(t值介于2.446~8.403之间),重度组显著低于轻度组(t值介于2.937~8.114之间),损伤组显著低于非损伤组(t值介于3.213~9.225之间);分析CO_(2)CP,研究组显著高于对照组(t=5.004),重度组显著高于轻度组(t=4.023),损伤组显著高于非损伤组(t=4.907),差异均有统计意义(P<0.05)。比较三种方法预测新生儿脏器损伤的敏感度、特异度和符合度,Apgar评分明显低于脐动脉血气分析(χ^(2)值分别为1.728、4.146、4.747),Apgar评分明显低于联合评估(χ^(2)值分别为5.722、9.013、10.581),脐动脉血气分析明显低于联合评估(χ^(2)值分别为4.551、3.693、4.384),差异均有统计学意义(P<0.05)。结论脐动脉血气分析联合Apgar评分可有效提高评估窒息新生儿脏器损伤的敏感度、特异度和符合度,有利于降低新生儿窒息误诊率,对评估新生儿预后有重要临床价值。

胎儿大脑中动脉、脐动脉血流指标水平与脐血血气分析结果的相关性分析

目的 分析胎儿大脑中动脉、脐动脉血流指标水平与脐血血气分析结果的相关性。方法 选取90例孕产妇,根据是否出现胎儿窘迫分为对照组(未发生胎儿窘迫,74例)和观察组(发生胎儿窘迫,16例)。于孕产妇孕晚期实施常规超声检查,并在新生儿出生后进行脐血血气分析检测。比较两组胎儿大脑中动脉及脐动脉血流指标[舒张期血流速度(VD)、收缩期血流速度(VS)、搏动指数(PI)、阻力指数(RI)及收缩期峰值血流速度与舒张末期血流速度之比(S/D)]水平,胎儿脐血血气指标[二氧化碳分压(PCO_(2))、氧分压(PO_(2))、碱剩余(BE)、p H值]水平;分析胎儿大脑中动脉及脐动脉血流指标水平与脐血血气指标水平相关性。结果 对照组大脑中动脉VD、VS、PI、RI及S/D分别为(20.17±2.01)cm/s、(68.31±2.39)cm/s、(1.48±0.28)、(0.74±0.18)、(4.45±0.74),脐动脉VD、VS、PI、RI及S/D分别为(16.64±4.25)cm/s、(61.02±4.21)cm/s、(0.74±0.21)、(0.59±0.10)、(3.24±0.72);观察组大脑中动脉VD、VS、PI、RI及S/D分别为(15.04±2.03)cm/s、(66.25±2.37)cm/s、(1.25±0.31)、(0.55±0.14)、(3.22±0.85),脐动脉VD、VS、PI、RI及S/D分别为(12.25±3.89)cm/s、(57.26±4.30)cm/s、(1.02±0.20)、(0.75±0.14)、(2.25±0.64)。与对照组相比,观察组胎儿大脑中动脉VD、VS、PI、RI及S/D更低,脐动脉VD、VS、S/D更低,脐动脉PI、RI更高(P<0.05)。观察组胎儿p H(7.15±0.03)、PO_(2)(23.24±4.29)mm Hg(1 mm Hg=0.133 k Pa)及BE(-7.24±1.41)mmol/L低于对照组的(7.26±0.02)、(28.11±4.36)mm Hg、(-6.01±1.45)mmol/L,PCO_(2)(61.33±2.37)mm Hg高于对照组的(45.35±2.31)mm Hg(P<0.05)。胎儿大脑中动脉VD、VS、PI、RI、SD与脐血p H、PO_(2)、BE呈正相关,与脐血PCO_(2)呈负相关(P<0.05)。胎儿脐动脉VD、VS、SD与p H、PO_(2)、BE呈正相关,与PCO_(2)呈负相关(P<0.05),脐动脉血PI、RI与p H、PO_(2)、BE呈负相关,与PCO_(2)呈正相关(P<0.05)。结论 胎儿大脑中动脉、脐动脉血流指标水平与脐血血气分析结果存在相关性,明确动脉血流指标水平以及脐血血气分析结果可为临床评估胎儿窘迫提供指导。

新生儿视网膜出血与脐动脉血气分析变化的相关性研究

目的探讨新生儿视网膜出血(RH)与脐动脉血气指标变化的关系。方法选取2018年5月至2021年12月期间在沧州市人民医院产科出生并行视网膜筛查的596例新生儿,根据新生儿是否视网膜出血分为出血组(n=230)和对照组(n=366),并依据出血程度可分为Ⅰ度组(n=95)、Ⅱ度组(n=75)和Ⅲ度组(n=60)。比较出血组与对照组及Ⅰ度、Ⅱ度、Ⅲ度组新生儿脐动脉血气指标氢离子浓度指数(pH)值、动脉血氧分压(PaO_(2))、动脉血二氧化碳分压(PaCO_(2))及剩余碱(BE)值,并应用Logistic回归模型分析影响RH发生的相关因素,采用受试者工作特征曲线(ROC)分析脐动脉血气指标对RH的预测价值。结果出血组pH值、PaO_(2)及BE值明显低于对照组,PaCO_(2)则高于对照组(P<0.05)。随视网膜出血程度的增加pH值、PaO_(2)及BE值降低,PaCO_(2)水平则升高,差异有统计学意义(P<0.05)。出血组产妇妊娠期糖尿病、妊娠期高血压、阴道分娩、产钳助产、急产、早产儿及新生儿有窒息史占比高于对照组(P<0.05)。多因素Logistic回归分析模型显示,早产儿、产妇妊娠期高血压、产妇阴道分娩、新生儿有窒息史及脐动脉血气中高水平PaCO_(2)及低水平PaO_(2)、BE、pH值均是影响RH的危险因素(P<0.05)。ROC曲线分析显示,pH值、PaO_(2)、PaCO_(2)及BE预测RH发生的AUC分别为0.755、0.719、0.669、0.816,pH值和BE的预测效能高于PaO_(2)和PaCO_(2)(P<0.05)。结论新生儿脐动脉血气指标与RH发生、发展紧密相关,且对RH的筛查具有一定的参考价值,其中pH值和BE筛查价值较高。

胎儿脐血流监测及胎心监护监测在高危妊娠中的预测价值

目的探讨高危妊娠应用胎儿脐血流监测及胎心监护监测的预测价值。方法回顾性分析2021年3月—2023年3月中国人民解放军空军特色医学中心妇产科收治的180例高危妊娠孕妇的临床资料,均开展胎儿脐血流监测和胎心监护监测。根据产前脐血流和胎心的监测结果,将研究对象分为甲组、乙组、丙组、丁组4组。对比4组的分娩指标(剖宫产、胎儿窘迫、脐带缠绕、羊水过少、胎粪污染、新生儿出生1 min内阿氏评分)、脐血流指标[脐动脉血流比值(systolic to diastolic velocity ratio,S/D)、脐动脉阻力指数(resistance index,RI)、脐动脉搏动指数(pulsatility index,PI)]。结果丁组剖宫产(79.17%)、胎儿窘迫(50.00%)、脐带缠绕(50.00%)、羊水过少(70.83%)、胎粪污染(100.00%)的不良分娩情况发生率最高,显著高于甲组、乙组,差异有统计学意义(P<0.05)。甲组新生儿出生1 min内阿氏评分8~10分比例显著高于乙组、丙组、丁组(P<0.05)。乙组和丙组新生儿出生1 min内阿氏评分8~10分比例均高于丁组(P<0.05)。丁组脐动脉血流指标(S/D值、RI、PI)高于甲组、乙组、丙组,差异有统计学意义(P<0.05)。结论对高危妊娠孕妇应用胎儿脐血流监测及胎心监护监测,可对不良妊娠结局提高预测准确性,有助于围产期的治疗与管理,减少不良分娩结局的产生,提高分娩质量。

新生儿脐动脉血血气分析的临床应用研究进展

分娩是一个复杂过程,产程长短、孕妇精神及体力状况、脐带因素(脐带绕颈、脐带扭转、受压等)等均对新生儿造成不同影响。脐动脉血血气分析指标可反映胎儿氧合及酸碱平衡状况,判断宫内、产时缺氧情况,是临床评估新生儿出生状态的常用检测指标。该文综述了脐动脉血血气分析在新生儿窒息、神经系统发育不良和其他系统疾病中的应用价值与研究进展。

脐动脉血气分析与新生儿窒息严重程度的相关性分析

目的:分析脐动脉血气分析与新生儿窒息严重程度的相关性。方法:选取2021年12月—2024年1月于厦门弘爱妇产医院分娩的足月新生儿238例作为研究对象,根据Apgar评分评估新生儿窒息情况,分为正常组、轻度窒息组和重度窒息组。采集新生儿脐动脉血检测pH、氧分压(PO_(2))、二氧化碳分压(PCO_(2))、碱剩余(BE)和乳酸(Lac)水平,比较三组脐动脉血分析指标,分析脐动脉血气分析各项指标与新生儿窒息的相关性。结果:238例新生儿中,无窒息130例,轻度窒息79例,重度窒息29例。三组pH、PO_(2)、BE比较,正常组>轻度窒息组>重度窒息组,三组PCO_(2)、Lac比较,正常组<轻度窒息组<重度窒息组,差异有统计学意义(P<0.05)。pH、PO_(2)、BE与新生儿窒息程度呈负相关(P<0.05),PCO_(2)、Lac与新生儿窒息程度呈正相关(P<0.05)。结论:新生儿脐动脉血气分析可以对新生儿窒息严重程度进行评估,具有一定的临床意义。

新生儿视网膜出血与脐动脉血气分析变化相关性研究

目的:探究新生儿视网膜出血(RH)与脐动脉血气分析变化之间的相关性。方法:回顾性研究。纳入2019-01/2021-12在我院产科出生的足月新生儿312例,根据RetCamⅢ眼底检查结果分为两组:对照组未发生RH的新生儿245例,RH组发生RH新生儿67例,比较两组患儿一般临床资料及脐动脉血气分析指标。根据RH程度分为Ⅰ度组20例,Ⅱ度组29例和Ⅲ度组18例。分析不同RH程度新生儿脐动脉血气分析指标水平,pH值与RH程度间的关系,影响新生儿发生RH因素。结果:RH组与对照组产妇年龄、平均孕周、胎儿性别、胎次、妊娠糖尿病、胎儿出生体质量、羊水情况比较均无差异(均P>0.05),分娩方式、妊娠高血压、产钳助产、新生儿窒息及脐带绕颈均有差异(均P<0.05)。RH组pH值、动脉血氧分压(PaO_(2))及剩余碱(BE)值显著低于对照组(均P<0.01),动脉二氧化碳分压(PaCO_(2))显著高于对照组(P<0.01)。不同程度RH患儿脐动脉血气分析指标有差异(P<0.05),且随着RH程度的增加,pH值、PaO_(2)及BE值逐渐下降(P<0.05),PaCO_(2)逐渐增加(P<0.05)。RH程度与脐动脉血气分析pH值呈负相关(rs=-0.593,P<0.05)。多因素Logistic回归分析结果显示,分娩方式、妊娠高血压、产钳助产、新生儿窒息、脐带绕颈、pH、PaO_(2)、PaCO_(2)及BE均是影响新生儿发生RH的因素。结论:新生儿发生RH与脐动脉血气分析变化密切相关,脐动脉血气分析可用于新生儿RH的诊断。

脐动脉血缺血修饰白蛋白联合血气分析对新生儿轻度窒息后心脏损害的预测价值

目的 探讨脐动脉血气分析联合脐动脉血缺血修饰白蛋白(ischemia-modified albumin,IMA)水平检测对新生儿轻度窒息后心脏损害的预测价值。方法 以2022年1月至2023年3月于江苏省阜宁县人民医院分娩的68例轻度窒息新生儿为研究对象,符合方案者65例,根据是否发生心脏损害,分为非心脏损害组(39例)及心脏损害组(26例)。全部研究对象均在分娩现场进行脐动脉血气分析,同时留取脐动脉血,测定IMA、肌酸激酶同工酶(creatine kinase isoenzyme,CK-MB)及高敏肌钙蛋白I(high-sensitivity troponin I,hsTnI)水平。应用SPSS 25.0软件对数据进行统计分析,并绘制受试者操作特征(receiver operating characteristic,ROC)曲线。结果 心脏损害组脐动脉血气分析指标[酸碱度(pondus hydrogenii,pH)、氧分压(partial pressure of oxygen,PO_(2))、二氧化碳分压(partial pressure of carbon dioxide,PCO_(2))、剩余碱(base excess,BE)、乳酸]及生物标记物(IMA、CK-MB、hsTnI)均显著高于非心脏损害组(P<0.05)。以心脏损害(否=0,是=1)为因变量,上述指标等为协变量,进行多因素Logistic回归分析。结果显示,pH值、PO_(2)及IMA差异有统计学意义(P<0.05)。IMA与pH值呈中度负相关,与PO_(2)呈弱负相关。用于预测新生儿轻度窒息后心脏损害的脐动脉血气pH值、脐动脉血IMA的ROC曲线下面积(area under curve,AUC)、cut-off值、灵敏度、特异度分别为0.840、7.14、96.20%、64.10%,0.893、79.65、73.10%、89.70%。脐动脉血气pH值及脐动脉血IMA二者联合预测新生儿轻度窒息后心脏损害时,AUC、灵敏度和特异度分别为0.927、76.90%、92.30%,优于单一指标。结论 脐动脉血气pH值联合脐动脉血IMA对新生儿轻度窒息后的心脏损害具有良好的预测价值,且方便、快捷,可考虑作为新生儿轻度窒息后心脏损害的临床早期诊断依据,具有潜在的临床应用价值。

多巴胺对改善剖宫产椎管内麻醉患者血流动力学的临床研究

目的:观察多巴胺(DA)用于剖宫产椎管内麻醉对改善患者血流动力学的影响。方法:选取2021年3月—2022年3月南阳医学高等专科学校附属中医院择期行剖宫产分娩的130例患者作为研究对象。采用抽签法,按1∶1比例将其分为常规组(65例,采用常规椎管内麻醉)和研究组(65例,采用DA辅助椎管内麻醉),比较两组患者术中及术后的血流动力学变化情况、新生儿脐动脉血气及母婴结局。结果:术后,研究组的心率(HR)、收缩压(SBP)、舒张压(DBP)、平均动脉压(MAP)均低于常规组,血氧饱和度(SPO_(2))高于常规组,差异有统计学意义(t=2.514、2.929、3.474、3.409、2.857,P<0.05);在不同麻醉方案下,研究组新生儿脐动脉血中动脉氧分压(PaO_(2))高于常规组,酸碱值(pH)、动脉二氧化碳分压(PaCO_(2))低于常规组,差异有统计学意义(t=3.779、4.326、3.353,P<0.05);娩出后1 min、5 min、10 min时的Apgar评分高于常规组,差异有统计学意义(t=2.932、3.955、2.472,P<0.05);在不同麻醉方案下,研究组患者术后不良事件发生率低于常规组,差异有统计学意义(χ^(2)=6.432,P<0.05)。结论:采用DA辅助椎管内麻醉可有效维持剖宫产患者术中及术后的血流动力学稳定,对改善新生儿脐动脉血气及预后、降低产妇术后不良事件发生风险均有积极意义。

正常足月顺产新生儿脐带动、静脉血pH值的相关性研究

目的探讨正常足月顺产新生儿脐静脉血pH值能否取代脐动脉血pH值来评估新生儿健康状况,及其影响因素。方法选取2020年1—12月符合纳入标准的150例产妇及新生儿为研究对象,用GEM Premier 3000进行血气分析,采用配对t检验,进行线性相关分析及回归分析。结果脐带动、静脉血平均pH值分别为(7.278±0.073)和(7.352±0.061),二者差异有统计学意义(P<0.001);脐带动、静血pH值在统计学上高度相关(r=0.782,P<0.05);脐带动、静脉血pH值、第二产程时长、产次、新生儿性别和需要吸氧分娩差异有统计学意义(P<0.05)。结论脐带动、静脉血pH值有显著差异,但是二者也显著相关;对于正常足月顺产新生儿,可以采集脐静脉血代替脐动脉血进行血气分析。

脐带绕颈新生儿的脐动静脉血气及差值的分析

目的:研究脐动静脉血气及其差值与脐带绕颈新生儿缺氧的关系。方法:对40例脐带绕颈新生儿和40例正常新生儿的脐动、静脉血进行血气分析,测定pH、PCO2、PO2、HCO3-、BE、HCT和脐动静脉血气差值[Δ(A-V)],并对两组的指标进行比较。结果:脐带绕颈组的脐动脉pH低于对照组,而PCO2高于对照组(P<0.05);两组脐静脉的各项指标差异无显著性;脐带绕颈组的脐动静脉差值ΔpH、ΔPCO2均大于对照组(P<0.05),而ΔPO2、ΔHCO3-、ΔBE、ΔHCT差异无显著性。结论:脐带绕颈加重分娩时胎儿的缺氧状态,脐动静脉血气差值可反映脐带绕颈新生儿的缺氧程度,未发现脐带绕颈导致胎儿贫血。

脐动脉血气分析与Apgar评分联合应用临床价值研究

目的探讨脐动脉血气分析与Apgar评分的关系及二者联合应用的临床意义。方法对184例足月新生儿出生即进行脐动脉血气分析、Apgar评分,并追踪新生儿结局。结果宫内窘迫组脐动脉血pH值为(7.25±0.21),无宫内窘迫组pH值为(7.29±0.04)。宫内窘迫组pH<7.2占30.36%,<7.1占23.21%,<7.0占16.07%;无宫内窘迫组pH<7.2占14.06%,<7.1占10.16%,<7.0占5.47%,两组比较差异均有统计学意义(P<0.05)。分别以7.2、7.1、7.0为pH界值,Apgar评分≤7分组中低于pH界值的百分比明显高于Apgar评分>7分组,差异有统计学意义(P<0.05)。Apgar评分≤7分组中pH<7.2敏感性为58.82%,特异性为57.14%;pH<7.1敏感性为55.88%,特异性为73.08%;pH<7.0敏感性为35.29%,特异性为75.00%。pH值越低,缺氧缺血性脑病和高胆红素血症的发病率越高。结论脐动脉血气分析联合Apgar评分能更客观、更灵敏地反映胎儿缺氧、缺血的程度,并对判断新生儿近、远期预后有较大价值。