Interest of D-dimer level,severity of COVID-19 and cost of management in Gabon

BACKGROUND Coronavirus disease 2019(COVID-19)is strongly associated with an increased risk of thrombotic events,including severe outcomes such as pulmonary embolism.Elevated D-dimer levels are a critical biomarker for assessing this risk.In Gabon,early implementation of anticoagulation therapy and D-dimer testing has been crucial in managing COVID-19.This study hypothesizes that elevated Ddimer levels are linked to increased COVID-19 severity.AIM To determine the impact of D-dimer levels on COVID-19 severity and their role in guiding clinical decisions.METHODS This retrospective study analyzed COVID-19 patients admitted to two hospitals in Gabon between March 2020 and December 2023.The study included patients with confirmed COVID-19 diagnoses and available D-dimer measurements at admission.Data on demographics,clinical outcomes,D-dimer levels,and healthcare costs were collected.COVID-19 severity was classified as non-severe(outpatients)or severe(inpatients).A multivariable logistic regression model was used to assess the relationship between D-dimer levels and disease severity,with adjusted odds ratios(OR)and 95%CI.RESULTS A total of 3004 patients were included,with a mean age of 50.17 years,and the majority were female(53.43%).Elevated D-dimer levels were found in 65.81%of patients,and 57.21%of these experienced severe COVID-19.Univariate analysis showed that patients with elevated D-dimer levels had 3.33 times higher odds of severe COVID-19(OR=3.33,95%CI:2.84-3.92,P<0.001),and this association remained significant in the multivariable analysis,adjusted for age,sex,and year of collection.The financial analysis revealed a substantial burden,particularly for uninsured patients.CONCLUSION D-dimer predicts COVID-19 severity and guides treatment,but the high cost of anticoagulant therapy highlights the need for policies ensuring affordable access in resource-limited settings like Gabon.

Insulin autoantibodies,D-dimer and microalbuminuria:A crosssectional,case-control study of type 2 diabetes

BACKGROUND Type 2 diabetes mellitus(T2DM)often leads to vascular complications,such as albuminuria.The role of insulin autoantibodies(IAA)and their interaction with D-dimer in this context remains unclear.AIM To investigate the characteristics of IAA and its effect on albuminuria in T2DM patients.METHODS We retrospectively analyzed clinical data from 115 T2DM patients with positive IAA induced by exogenous insulin,and 115 age-and sex-matched IAA-negative T2DM patients as controls.Propensity scores were calculated using multivariate logistic regression.Key variables were selected using the least absolute shrinkage and selection operator(LASSO)algorithm.We constructed a prediction model and analyzed the association between IAA and albuminuria based on demographic and laboratory parameters.RESULTS The IAA-positive group had significantly higher D-dimer levels[0.30(0.19-0.55)mg/L vs 0.21(0.19-0.33)mg/L,P=0.008]and plasma insulin levels[39.1(12.0-102.7)μU/mL vs 9.8(5.5-17.6)μU/mL,P<0.001]compared to the IAA-negative group.Increases in the insulin dose per weight ratio,diabetes duration,and urinary albumin-to-creatinine ratio(UACR)were observed but did not reach statistical significance.The LASSO model identified plasma insulin and D-dimer as key factors with larger coefficients.D-dimer was significantly associated with UACR in the total and IAA-positive groups but not in the IAA-negative group.The odds ratio for D-dimer elevation(>0.5 g/L)was 2.88(95%confidence interval:1.17-7.07)in the IAA-positive group(P interaction<0.05).CONCLUSION D-dimer elevation is an independent risk factor for abnormal albuminuria and interacts with IAA in the development of abnormal albuminuria in T2DM patients.

Prognostic value of fibrinogen and D-dimer-fibrinogen ratio in resectable gastrointestinal stromal tumors

AIM To investigate the prognostic value of preoperative fbri-nogen concentration （FIB） and D-dimer-fibrinogen ratio （DFR） in gastrointestinal stromal tumors （GISTs）.METHODS The purpose of this study was to retrospectively ana-lyze 170 patients with GISTs who were admitted to our hospital from January 2010 to December 2015. The op-timal cutoff values of related parameters were estimated by receiver operating characteristic （ROC） curve analysis. The recurrence free survival （RFS） rate was evaluated using Kaplan-Meier curves. Univariate analysis and multivariate Cox regression models were used to analyze the prognostic factors of GISTs. The relationship between the FIB, D-dimer, DFR, platelet count （PLT）, and the clinicopathological features of GISTs was described by the chi-square test or nonparametric rank sum test （Mann-Whitney test）.RESULTS In ROC analysis, the optimal cutoff values of FIB, D-dimer, DFR, and PLT were 3.24 g/L, 1.24 mg/L, 0.354, and 197.5 （× 109/L）, respectively. Univariate analysis and the Kaplan-Meier survival curve showed that FIB, D-dimer, DFR, PLT,National Institutes of Health （NIH） risk category, tumor size, tumor location, and mitotic index were signifcantly relevant to the 3-year and 5-year survival rate of patients （ P 〈 0.05）. Cox multivariate regression analysis illustrated that FIB （RR： 0.108, 95%CI： 0.031-0.373）, DFR （RR： 0.319, 95%CI： 0.131-0.777）, and NIH risk category （ RR： 0.166, 95%CI： 0.047-0.589） were independent prognostic factors of the RFS rate （ P 〈 0. 05）. Moreover, FIB, D-dimer, DFR, and PLT were correlated with the clinical features of GISTs.CONCLUSIONFIB, D-dimer, DFR, and PLT are all related to the prognosis of GISTs. Moreover, FIB and DFR may be independent risk factors for predicting the prognosis of resectable GISTs.

Combination of preoperative fibrinogen and D-dimer as a prognostic indicator in pancreatic ductal adenocarcinoma patients undergoing R0 resection

BACKGROUND Patients with malignant tumors frequently exhibit hyperactivation of the coagulation system and secondary increased fibrinolytic activity.Fibrinogen and D-dimer are common indicators that are crucial in the coagulation/fibrinolysis system.Both indicators have been verified to have predictive value in the overall survival(OS)of many patients with solid malignancies.AIM To explore the prognostic significance of fibrinogen combined with D-dimer in pancreatic ductal adenocarcinoma(PDAC)patients undergoing radical R0 resection.METHODS We retrospectively analyzed the clinical data of 282 patients with PDAC undergoing radical R0 resection in the Cancer Hospital,Chinese Academy of Medical Sciences,between January 2010 and December 2019.The surv_cutpoint function of R language was used to determine the optimal cutoff values of the preoperative fibrinogen concentration and preoperative D-dimer concentration.Enrolled patients were further divided into the any-high group(high preoperative fibrinogen concentration and/or high preoperative D-dimer concentration)and the low-low group(low preoperative fibrinogen and D-dimer concentrations)according to the optimal cutoff values.RESULTS The optimal cutoff values of the preoperative fibrinogen concentration and preoperative D-dimer concentration were 3.31 g/L and 0.53 mg/L,respectively.Furthermore,multivariate Cox regression analysis showed that the preoperative fibrinogen concentration(HR:1.603,95%CI:1.201-2.140,P=0.001)and preoperative D-dimer concentration(HR:1.355,95%CI:1.019-1.801,P=0.036)exhibited obvious correlations with the OS of PDAC patients undergoing radical R0 resection.A prognostic analysis was further performed based on the subgroup results by using fibrinogen combined with D-dimer.The median OS duration of the low-low group(31.17 mo)was significantly longer than that of the any-high group(15.43 mo).Additionally,multivariate Cox regression analysis revealed that the degree of differentiation(P<0.001),lymph node metastasis(HR:0.663,95%CI:0.497-0.883,P=0.005),preoperative CA19-9 level(HR:1.699,95%CI:1.258-2.293,P=0.001),adjuvant therapy(HR:1.582,95%CI:1.202-2.081,P=0.001)and preoperative combined grouping(HR:2.397,95%CI:1.723-3.335,P<0.001)were independent predictors of OS in PDAC patients undergoing radical R0 resection.CONCLUSION Preoperative fibrinogen combined with D-dimer plays a predictive role in OS,and low preoperative fibrinogen and D-dimer concentrations can indicate prolonged OS in PDAC patients undergoing radical R0 resection.

Associations of serum D-dimer and glycosylated hemoglobin levels with third-trimester fetal growth restriction in gestational diabetes mellitus

BACKGROUND Gestational diabetes mellitus(GDM)is a special type of diabetes that commonly occurs in women during pregnancy and involves impaired glucose tolerance and abnormal glucose metabolism;GDM is diagnosed for the first time during pregnancy and can affect fetal growth and development.AIM To investigate the associations of serum D-dimer(D-D)and glycosylated hemoglobin(HbA1c)levels with third-trimester fetal growth restriction(FGR)in GDM patients.METHODS The clinical data of 164 pregnant women who were diagnosed with GDM and delivered at the Obstetrics and Gynecology Hospital of Fudan University from January 2021 to January 2023 were analyzed retrospectively.Among these women,63 whose fetuses had FGR were included in the FGR group,and 101 women whose fetuses had normal body weights were included in the normal body weight group(normal group).Fasting venous blood samples were collected from the elbow at 28-30 wk gestation and 1-3 d before delivery to measure serum D-D and HbA1c levels for comparative analysis.The diagnostic value of serum D-D and HbA1c levels for FGR was evaluated by receiver operating characteristic analysis,and the influencing factors of third-trimester FGR in GDM patients were analyzed by logistic regression.RESULTS Serum fasting blood glucose,fasting insulin,D-D and HbA1c levels were significantly greater in the FGR group than in the normal group,while the homeostasis model assessment of insulin resistance values were lower(P<0.05).Regarding the diagnosis of FGR based on serum D-D and HbA1c levels,the areas under the curves(AUCs)were 0.826 and 0.848,the cutoff values were 3.04 mg/L and 5.80%,the sensitivities were 81.0%and 79.4%,and the specificities were 88.1%and 87.1%,respectively.The AUC of serum D-D plus HbA1c levels for diagnosing FGR was 0.928,and the sensitivity and specificity were 84.1%and 91.1%,respectively.High D-D and HbA1c levels were risk factors for third-trimester FGR in GDM patients(P<0.05).CONCLUSION D-D and HbA1c levels can indicate the occurrence of FGR in GDM patients in the third trimester of pregnancy to some extent,and their combination can be used as an important index for the early prediction of FGR.

Subconjunctival trypsin injection for anterior chamber fibrin exudates in eyes with globe rupture following vitrectomy

AIM:To compare the safety and clinical outcomes of subconjunctival trypsin and dexamethasone(DEX)injections in the treatment of anterior chamber fibrin exudates in eyes with globe rupture following primary wound repair and vitrectomy.METHODS:A retrospective analysis included 42 males and 10 females(mean age 46.0±6.0y,range 34 to 58y)who underwent primary wound sutures and vitrectomy for globe rupture.Patients with pupil-covered fibrinous exudate or/and membrane in the anterior chamber were treated.On the first postoperative day,subconjunctival injections of either 5000 units(0.4 mL)of trypsin solution(n=25)or 0.5 mL(1 mg)DEX(n=27)were administered to accelerate exudate absorption.Efficacy was assessed by observing break time and partial absorption of the fibrin exudate membrane.Safety and comfort were evaluated by monitoring intraocular pressure(IOP),allergy,pain,and foreign body sensation.RESULTS:Both groups achieved 1/3 absorption of the anterior chamber fibrin exudate membrane,but the trypsin group exhibited shorter break time and partial absorption time compared to the DEX group(P<0.05).Trypsin treatment was also less irritating to patients.No adverse reactions were reported,and IOP remained stable.Visual acuity improved in both groups without statistical difference.CONCLUSION:Compared to DEX,trypsin demonstrates a shorter absorption time for the fibrin exudate membrane with a more comfortable process in treating pupil-covered fibrinous exudate or/and membrane after vitrectomy for globe rupture.

Impact of D-dimer on in-hospital mortality following aortic dissection:A systematic review and meta-analysis

BACKGROUND The utility of D-dimer(DD)as a biomarker for acute aortic dissection(AD)is recognized.Yet,its predictive value for in-hospital mortality remains uncertain and subject to conflicting evidence.AIM To conduct a meta-analysis of AD-related in-hospital mortality(ADIM)with elevated DD levels.METHODS We searched PubMed,Scopus,Embase,and Google Scholar for AD and ADIM literature through May 2022.Heterogeneity was assessed using I2 statistics and effect size(hazard or odds ratio)analysis with random-effects models.Sample size,study type,and patients’mean age were used for subgroup analysis.The significance threshold was P<0.05.RESULTS Thirteen studies(3628 patients)were included in our study.The pooled prevalence of ADIM was 20%(95%CI:15%-25%).Despite comparable demographic characteristics and comorbidities,elevated DD values were associated with higher ADIM risk(unadjusted effect size:1.94,95%CI:1.34-2.8;adjusted effect size:1.12,95%CI:1.05-1.19,P<0.01).Studies involving patients with a mean age of<60 years exhibited an increased mortality risk(effect size:1.43,95%CI:1.23-1.67,P<0.01),whereas no significant difference was observed in studies with a mean age>60 years.Prospective and larger sample size studies(n>250)demonstrated a heightened likelihood of ADIM associated with elevated DD levels(effect size:2.57,95%CI:1.30-5.08,P<0.01 vs effect size:1.05,95%CI:1.00-1.11,P=0.05,respectively).CONCLUSION Our meta-analysis shows elevated DD increases in-hospital mortality risk in AD patients,highlighting the need for larger,prospective studies to improve risk prediction models.

Utility of plasma D-dimer for diagnosis of venous thromboembolism after hepatectomy

BACKGROUND Venous thromboembolism(VTE)is a potentially fatal complication of hepatectomy.The use of postoperative prophylactic anticoagulation in patients who have undergone hepatectomy is controversial because of the risk of postoperative bleeding.Therefore,we hypothesized that monitoring plasma D-dimer could be useful in the early diagnosis of VTE after hepatectomy.AIM To evaluate the utility of monitoring plasma D-dimer levels in the early diagnosis of VTE after hepatectomy.METHODS The medical records of patients who underwent hepatectomy at our institution between January 2017 and December 2020 were retrospectively analyzed.Patients were divided into two groups according to whether or not they developed VTE after hepatectomy,as diagnosed by contrast-enhanced computed tomography and/or ultrasonography of the lower extremities.Clinicopathological factors,including demographic data and perioperative D-dimer values,were compared between the two groups.Receiver operating characteristic curve analysis was performed to determine the D-dimer cutoff value.Univariate and multivariate analyses were performed using logistic regression analysis to identify significant predictors.RESULTS In total,234 patients who underwent hepatectomy were,of whom(5.6%)were diagnosed with VTE following hepatectomy.A comparison between the two groups showed significant differences in operative time(529 vs 403 min,P=0.0274)and blood loss(530 vs 138 mL,P=0.0067).The D-dimer levels on postoperative days(POD)1,3,5,7 were significantly higher in the VTE group than in the non-VTE group.In the multivariate analysis,intraoperative blood loss of>275 mL[odds ratio(OR)=5.32,95%confidence interval(CI):1.05-27.0,P=0.044]and plasma D-dimer levels on POD 5≥21μg/mL(OR=10.1,95%CI:2.04-50.1,P=0.0046)were independent risk factors for VTE after hepatectomy.CONCLUSION Monitoring of plasma D-dimer levels after hepatectomy is useful for early diagnosis of VTE and may avoid routine prophylactic anticoagulation in the postoperative period.

Therapeutic Effectiveness of Leukocyte-and Platelet-rich Fibrin for Diabetic Foot Ulcers:A Retrospective Study

Objective Diabetic foot ulcer(DFU)is one of the most serious complications of diabetes.Leukocyte-and platelet-rich fibrin(L-PRF)is a second-generation autologous platelet-rich plasma.This study aims to investigate the clinical effects of L-PRF in patients with diabetes in real clinical practice.Methods Patients with DFU who received L-PRF treatment and standard of care(SOC)from 2018 to 2019 in Tongji Hospital were enrolled.The clinical information including patient characteristics,wound evaluation(area,severity,infection,blood supply),SOC of DFU,and images of ulcers was retrospectively extracted and analyzed.L-PRF treatment was performed every 7±2 days until the ulcer exhibited complete epithelialization or an overall percent volume reduction(PVR)greater than 80%.Therapeutic effectiveness,including overall PVR and the overall and weekly healing rates,was evaluated.Results Totally,26 patients with DFU were enrolled,and they had an ulcer duration of 47.0(35.0,72.3)days.The severity and infection of ulcers varied,as indicated by the Site,Ischemia,Neuropathy,Bacterial Infection,and Depth(SINBAD)scores of 2–6,Wagner grades of 1–4,and the Perfusion,Extent,Depth,Infection and Sensation(PEDIS)scores of 2–4.The initial ulcer volume before L-PRF treatment was 4.94(1.50,13.83)cm3,and the final ulcer volume was 0.35(0.03,1.76)cm3.The median number of L-PRF doses was 3(2,5).A total of 11 patients achieved complete epithelialization after the fifth week of treatment,and 19 patients achieved at least an 80%volume reduction after the seventh week.The overall wound-healing rate was 1.47(0.63,3.29)cm3/week,and the healing rate was faster in the first 2 weeks than in the remaining weeks.Concurrent treatment did not change the percentage of complete epithelialization or healing rate.Conclusion Adding L-PRF to SOC significantly improved wound healing in patients with DFU independent of the ankle brachial index,SINBAD score,or Wagner grade,indicating that this method is appropriate for DFU treatment under different clinical conditions.

D-Dimer: Predictor of Postpartum Hemorrhage among Pre-Eclampsia at Kilimanjaro Christian Medical Centre

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.

Current Research Progress of Central Venous Catheter-Associated Fibrin Sheath Prevention and Nursing Care

With the popularization of central venous catheterization in recent years,the problems arising from intravenous therapy have gradually increased.Fibrin sheath is the complication with the highest incidence rate in central venous catheterization,which has always been a major problem in intravenous therapy.So the prevention and treatment of fibrin sheath has become a hot spot of research in recent years.Hence,this paper summarizes the research on fibrin sheath in recent years.

Analysis of the Role of D-Dimer,Interleukin-6,and Interleukin-18 in Differential Diagnosis of Pediatric Refractory Mycoplasma pneumoniae Pneumonia

Objective:To analyze the value of D-dimer(D-D),interleukin-6(IL-6),and IL-18 in the differential diagnosis of children with refractory Mycoplasma pneumoniae pneumonia(RMPP).Methods:The medical records of 92 children with Mycoplasma pneumoniae pneumonia(MPP)treated in the hospital were selected for retrospective analysis from January 2023 to January 2024.After comprehensive examinations such as computed tomography examination of the chest,48 children with general Mycoplasma pneumoniae pneumonia(GMPP)were put in the GMPP group and 44 children with RMPP were grouped in the RMPP group.The IL-6,IL-18,and D-D levels were compared between the two groups,and the receiver operating characteristic(ROC)curves were plotted to analyze their value for differential diagnosis of RMPP.Results:The levels of IL-6,IL-18,and D-D in the RMPP group were higher than those in the GMPP group(P<0.05);the ROC curves showed that the specificity of the differential diagnosis of IL-6,IL-18,and D-D was higher,and their diagnostic value was significant.Conclusion:Determination of IL-6,IL-18,and D-D levels in children with MPP can further diagnose the children’s condition,which can help physicians formulate targeted treatment plans,and is of great significance to the improvement of the children’s condition,which is worthy of attention.

Adult-Onset Still's Disease Misdiagnosed as Acute Fibrinous and Organizing Pneumonia: A Case Report and Literature Review

Adult-onset Stil's disease(AOSD)is a rare condition that lies between autoinflammatory syndrome and autoimmune disease.The main clinical manifestations include fever,chills,rash,joint swelling and pain,peripheral blood leukocytosis,splenomegaly,etc.It is a systemic disease affecting between 1 and 34 people per million.The average age of onset is 35 years old,with a slightly higher prevalence rate in women.Since AOSD lacks early specific symptoms and signs,non-specialist doctors have limited understanding of the disease,and patients are prone to clinical misdiagnosis,mistreatment,and delayed disease progression.This paper reports a patient whose AOSD was misdiagnosed as acute fibrinous and organizing pneumonia.

Correlation Analysis Between Changes of D-Dimer Level and Rheumatoid Arthritis Complicated with Interstitial Lung Disease

Objective:To explore the correlation between the change of D-dimer level and rheumatoid arthritis complicated with interstitial lung disease.Methods:From January 2022 to February 2024,20 rheumatoid arthritis patients complicated with interstitial lung disease(interstitial lung disease group),20 rheumatoid arthritis patients without interstitial lung disease(without interstitial lung disease group),and 20 healthy people(control group)in Xijing Hospital were selected for this study.The fasting venous blood of the three groups of subjects was collected and their D-dimer,C-reactive protein(CRP),rheumatoid factor(RF),and erythrocyte sedimentation rate(ESR)were detected.Subsequently,the correlation between each index and rheumatoid arthritis complicated with interstitial lung disease was analyzed.Results:The D-dimer level of the interstitial lung disease group was significantly higher than the other two groups(P<0.05).The D-dimer level of the group without interstitial lung disease was significantly higher than the control group(P<0.05).CRP levels in the interstitial lung disease group and the group without interstitial lung disease were significantly higher than those of the control group(P<0.05).The ESR and RF levels of the interstitial lung disease group were significantly higher than the other two groups(P<0.05).The levels of ESR and RF levels of the group without interstitial lung disease were significantly higher than the control group(P<0.05).Conclusion:D-dimer levels of rheumatoid arthritis patients are higher than those of healthy individuals,and those complicated with interstitial lung disease present even higher levels.This finding shows that there is a correlation between D-dimer levels and rheumatoid arthritis with interstitial lung disease,which may facilitate the evaluation and diagnosis of this disease.

猪源纤维蛋白粘合剂在冠状动脉旁路移植术中的应用研究

目的评估猪源纤维蛋白粘合剂在冠状动脉旁路移植术(CABG)中的有效性、安全性以及经济性。方法回顾性分析2023年3—10月于首都医科大学附属北京安贞医院冠心病外科中心143例接受非停跳CABG患者的临床资料,其中67例患者术中使用了猪源纤维蛋白粘合剂(观察组),76例患者术中未使用(对照组)。分析2组重症监护病房(ICU)停留时间、术后引流量、引流管留置时间、术后住院时间、术后血液制品使用率、凝血功能及药物过敏发生情况。结果2组ICU停留时间、术后引流量、术后血液制品使用率比较差异均无统计学意义(均P>0.05)。观察组术后引流管留置时间以及住院时间均短于对照组[44(38,49)h比46(41,65)h、5(4,6)d比5(5,6)d](均P<0.05)。术前及术后第1天,2组凝血酶原活动度、活化部分凝血活酶时间、纤维蛋白原水平比较差异均无统计学意义(均P>0.05)。术后第1天,观察组纤维蛋白降解产物水平高于对照组(P<0.05)。2组均未发生药物相关过敏反应,住院费用比较差异无统计学意义(P>0.05)。结论CABG术中使用猪源纤维蛋白粘合剂具有良好的生物相容性,可缩短患者术后引流管留置时间及术后住院时长,但并不会减少术后引流量及输血率,对患者住院费用也无明显影响。

血栓前状态标志物F1+2、TAT、AT-Ⅲ、D-Dimer对早期复发性流产的预测价值

【目的】探讨血栓前状态分子标志物:凝血酶原片段F1+2(F1+2)、凝血酶-抗凝血酶Ⅲ复合物(TAT)、抗凝血酶Ⅲ(AT-Ⅲ)、D-二聚体(D-Dimer)与早期复发性流产(RSA)的关系,及各分子标志物对血栓前状态(PTS)引起的RSA的诊断价值。【方法】比较103例RSA已孕者(AEP组)、103例有RSA病史现未孕者(ANP组)及40例正常早孕者(NEP组)及40例健康未孕者(NNP组)血清中F1+2、TAT、AT-Ⅲ、D-Dimer水平;并以ROC曲线方法判断PTS引起的RSA发生时以上各个指标的最佳临界值。【结果】1.ANP组血浆F1+2、D-Dimer水平显著高于NNP组,两者间差异有显著性(P<0.008);而且流产3次者较2次者指标水平高,差别有统计学意义(P<0.0167)。F1+2与D-Dimer判断RSA未孕患者存在血栓前状态的最佳筛查界值分别为55.11nmol/L(AUC=0.767)及233.50μg/L(AUC=0.636)。2.ANP组血浆TAT水平高于NNP组,AT-Ⅲ水平低于NNP组,但其差别无统计学意义(P>0.008)。AEP组血浆F1+2、TAT、D-Dimer水平高于NEP组,AT-Ⅲ水平低于NEP组,但其差别无统计学意义(P>0.008)。【结论】RSA与PTS存在相关性;RSA患者在孕前已经表现为PTS,PTS的标志物F1+2、D-Dimer可用于RSA未孕人群流产原因的筛查,其水平越高,流产可能性越大。

阵发性房颤患者血浆D-Dimer、Fg和FDP水平测定及其意义

目的 观察阵发性房颤患者血浆中D -二聚体纤维蛋白原及纤维蛋白降解产物水平变化 ,并探讨其临床意义。 方法 阵发性房颤组患者22例 ,对照组14例 ,均抽取肘静脉血检测血浆D二聚体、纤维蛋白原、纤维蛋白降解产物的水平。 结果 阵发性房颤组患者血浆D二聚体水平 (251.4±62.3)ng/ml明显高于对照组(205.1±49.2)ng/ml(t=2.349,P<0.05) ;而纤维蛋白原、纤维蛋白降解产物水平 (268.1±50.2)mg/dl、(3.01±1.12)mg/L与对照组 (242.7±42.8)mg/L、(2.55±1.24)mg/L相比无明显变化 (t=1.813、1.153 ,P>0.05)。 结论提示阵发性房颤患者可能存在血栓前状态 ,必要时应给予抗凝治疗。

D-dimer、C反应蛋白和脑钠肽在肺栓塞患者的临床诊断价值及灵敏度、特异度和准确度对比研究

目的探讨D-Dimer、C-反应蛋白和脑钠肽在肺栓塞患者的临床诊断价值以及灵敏度、特异度和准确度对比研究。方法随机选取2013年5月~2014年5月间收治的大面积肺栓塞患者45例,小面积肺栓塞患者45例,并选取同期体检的健康者45例作为对照组。检测并比较治疗前后各组血浆D-Dimer、CRP和BNP水平。采用Logistic分析患者血浆D-Dimer、CRP和BNP水平与肺栓塞发生的相关性。以肺栓塞检验金标准(肺动脉造影)分别与D-dimer检验、CRP检验和BNP检验法做配对卡方检验,计算Ddimer检验、CRP检验和BNP检验3种检测方法的灵敏度、特异度和准确度,并比较其差异。结果治疗前,大面积组和小面积组肺栓塞D-Dimer、CRP和BNP水平均显著高于对照组(P<0.05);大面积组D-Dimer、CRP和BNP水平也明显高于小面积组(P<0.05)。治疗后,大面积组和小面积患者血浆D-Dimer、CRP和BNP水平明显下降(P<0.05),且与正常对照组比较,差异无统计学意义。Logistic分析结果表明,血浆D-Dimer、CRP和BNP水平与肺栓塞的发生呈正相关性(r=3.11,P<0.05;r=4.36,P<0.05;r=2.86,P<0.05)。D-Dimer检测、CRP检测和BNP检测方法在检测灵敏度、特异度和准确度方面差异无统计学意义。结论 D-dimer、C-反应蛋白和脑钠肽水平与肺栓塞的发生呈正相关性,是评估患者病情的重要指标,具有十分重要临床指导价值。

D-dimer与纤维蛋白原比值在静脉血栓栓塞诊断中的应用价值

目的探讨D-dimer、纤维蛋白原(Fg)、D-dimer与Fg比值(D/F)以及C反应蛋白(CRP)在静脉血栓栓塞(VTE)中的临床诊断价值。方法对民航总医院就诊的221例急诊与住院疑似VTE患者D-dimer、Fg及CRP进行检测,并计算D/F,采用胸部CT、病理诊断等对疑似患者明确诊断。结果 VTE人群的Fg水平低于非VTE人群(t=6.421,P<0.01),而D-dimer、D/F、CRP均显著增高;在VTE诊断灵敏度达到100%时,D/F特异度与阳性预测值(PPV)(73.2%,56.4%)优于使用单独使用D-dimer(47.0%,39.6%);ROC曲线分析表明上述指标在VTE诊断中的准确性顺序为D/F>D-dimer>CRP。结论采用D/F可提高VTE临床诊断的特异性,可作为一项有益的指标应用于VTE辅助诊断。

东菱克栓酶对脑梗塞患者血浆 t-PA、D-dimer 的调节及临床意义

随机将４７例脑梗塞患者分成二组，分别采用东菱克栓酶（ＤＦ－５２１）及低分子右旋糖酐丹参（低右组）治疗，并同时观察疗效及检测治疗前后血浆组织型纤溶酶原激活剂（ｔ－ＰＡ）、Ｄ－二聚体（Ｄ－ｄｉｍｅｒ）值。结果表明，急性脑梗塞治疗前血浆中ｔ－ＰＡ明显低于对照组（Ｐ＜０．０５），Ｄ－ｄｉｍｅｒ明显高于对照组（Ｐ＜０．００１）；治疗后ｔ－ＰＡ较治疗前增加，以ＤＦ－５２１组为明显（Ｐ＜０．００５，低右组Ｐ＞０．０５）。用药后二组Ｄ－ｄｉｍｅｒ相比较有显著差异（Ｐ＜０．０１）；ｔ－ＰＡ相比也有差异（Ｐ＜０．０５）。ＤＦ－５２１组治疗脑梗塞有效率明显优于低右组（Ｐ＜０．０５）。提示：早期使用ＤＦ－５２１能增加纤溶酶活性，促进血栓溶解，加速神经功能恢复。