目的：探讨肿瘤PICC置管患者血浆D-二聚体水平与血栓形成风险的相关性，为临床预防及早期诊断提供参考依据。方法：选取2021年6月至2024年6月我院120例肿瘤PICC置管患者为研究对象，收集其临床资料，并根据是否发生血栓形成分为血栓组（n=40）和非血栓组（n=80）。比较两组患者血浆D-二聚体水平、基本资料、PICC置管相关因素的差异，并分析血浆D-二聚体水平与血栓形成风险的相关性。结果：置管后第3天、第7天，血栓组血浆D-二聚体水平分别为（1.77±0.58）mg/L、（2.06±0.76）mg/L，均高于非血栓组的（0.93±0.44）mg/L、（1.34±0.38）mg/L，组间差异有统计学意义（P＜0.05）。多因素Logistic回归分析显示，血浆D-二聚体水平升高、置管时间超过3个月、化疗方案为含铂方案是肿瘤PICC置管患者发生血栓形成的独立危险因素（P<0.05）。ROC分析显示，血浆D-二聚体水平对肿瘤PICC置管患者血栓形成风险的预测价值良好。结论：肿瘤PICC置管患者血浆D-二聚体水平与血栓形成风险密切相关，可作为临床预防及早期诊断的重要指标。

目的 探讨D-二聚体在急诊胸痛中心早期鉴别诊断急性主动脉综合征(AAS)的重要性,以及讨论如何结合D-二聚体检测优化现有胸痛中心的急救流程。方法 收集近1年来我院胸痛中心收治的50例以胸痛为主诉的患者资料,其中25例最终确诊AAS的患者作为AAS组,以同一时期诊治的25例进行了急诊经皮冠状动脉介入治疗(PCI)确诊的急性非ST抬高型心肌梗死(NSTEMI)患者作为对照组。所有患者在首诊时检测血D-二聚体,通过绘制受试者工作特征曲线(receiver operating characteristic curve, ROC),分析D-二聚体对AAS与NSTEMI的鉴别诊断价值,并探讨其优化胸痛中心救治流程的实际意义。结果 AAS组D-二聚体水平明显高于NSTEMI组,差异具有统计学意义(P<0.001),且在D-二聚体为89 500 μg/L时取得最佳截止点。结论 对于胸痛患者早期鉴别诊断,D-二聚体具有重要参考价值。

Objective To explore the importance of D-dimer in early differential diagnosis of acute aortic syndrome (AAS) in the emergency chest pain center. And to discuss how to combine D-dimer detection with optimizing the first aid process of existing chest pain centers. Methods The data of 50 patients who complained of chest pain in the chest pain center of our hospital in the past 1 year was collected, including 25 patients who were finally diagnosed as AAS group. Other 25 patients with acute non-ST elevation myocardial infarction (NSTEMI) diagnosed by emergency percutaneous coronary intervention (PCI) were included as control group. Blood D-dimer was detected in all patients at the first visit. By drawing receiver operating characteristic curve (ROC), the value of D-dimer in differential diagnosis between AAS and NSTEMI was analyzed, and the practical significance of optimizing the treatment process of chest pain center was discussed. Results The level of D-dimer in AAS group was significantly higher than that in NSTEMI group (P<0.001), and the best cutoff point was obtained when D-dimer was 895.00 μg/L. Conclusion D-dimer has reference significance for early differential diagnosis of patients with chest pain.

目的 初步探讨D-二聚体对判断女性恶性肿瘤病情和疗效观察的应用价值与诊断效能。方法 选取2016年3月—2017年12月间在佛山第一人民医院乳腺肿瘤内科住院治疗的女性恶性肿瘤患者149例,早期术后患者(术后组)58例,晚期复发转移患者(晚期组)91例,测定其接受化疗前后的血浆D-二聚体水平(分别记作D1、D2),分析D-二聚体浓度变化(ΔD=D2-D1)与疗效的相关性。D-二聚体浓度(ng/mL)用中位数(四分位间距)表示,治疗前后配对样本比较用Wilcoxon秩和检验,两组间独立+样本比较用Mann-Whitney U检验,以Spearman法分析两组资料的相关性是否有统计学意义。结果 术后组患者化疗后D-二聚体水平低于化疗前(ΔD=-184.8,P<0.0001),D1、D2均与年龄正相关(P<0.01),r²分别为0.356,0.389。晚期组患者中,化疗后有33例出现病情进展(progressive disease, PD组),58例获得疾病缓解或稳定(非PD组)。PD组化疗前基线水平高于非PD组(1 586 vs 754.2,P<0.01),接受化疗后PD组D-二聚体较基线水平升高(ΔD=1 124,P<0.0001),非PD组较基线水平下降(ΔD=-153.3,P=0.004 5),PD组化疗后D-二聚体水平高于非PD组(2 511 vs 525.8,P<0.01)。以ΔD、D1、D2诊断是否PD分别进行受试者工作特征曲线(receiver operating characteristic curve,ROC)分析,结果显示ROC曲线下面积分别为0.8 603(95% CI:0.768 5~0.952 0)、0.674 0(95% CI:0.558 2~0.759 7)、0.895 6(95%CI:0.829 1~0.962 1),对诊断PD有一定准确性。当ΔD＜-145.4 ng/mL、D1>1 375 ng/mL、D2>1 033 ng/mL时,Youden指数最大,诊断PD的准确性较高。结论 血浆D-二聚体的变化与肿瘤负荷密切相关,有助于女性恶性肿瘤病情的判断和疗效观察及评价预后,对辅助判断病情进展上的具有较高的诊断效能。

Objective To investigate the clinical significance and diagnostic value of plasma D-dimer measurement in response evaluation of female patients with tumor. Methods 149 female cancer patients were enrolled, in which there were 58 post-operative early staged cases(post-operative group), 91 metastatic cases(metastatic group). D-dimer levels before chemotherapy (D1) and after the last cycle of chemotherapy (D2) were assessed and analyzed to examine whether they are correlated to response of therapy. D-dimer levels were presented as median(25^th percentile,75^th percentile) and compared using Wilcoxon signed-rank test(for paired samples) and Mann-Whitney U test(for independent samples). Spearman rank tests were conducted to show the correlation of two variables. Results In post-operative group,D2 was lower than D1(ΔD=-184.8,P<0.0001),and both of D1 and D2 were positively correlated with age(r²= 0.356,0.389,respectively,P<0.01). In metastatic group, after chemotherapy,33 cases had progressive diseases(PD group), while 58 cases gained response or stable diseases(non-PD group). Baseline D-dimer level of PD group was higher than that of non-PD group(1586 vs 754.2,P<0.01),and after chemotherapy the case was similar(2511 vs 525.8,P<0.01). After chemotherapy, D-dimer level increased in PD group(ΔD=1124,P<0.0001), and decreased in non-PD group(ΔD=-153.3,P=0.0045).We compared the abilities of the ΔD(ΔD=D2-D1), D1and D2 to discriminate between responders and non-responders using receiver operating characteristic curves(ROC). The areas under the curve (AUC) of the ΔD, D1and D2, were 0.8603(95%CI:0.7685-0.9520)、0.6740(95%CI:0.5582-0.7597)、0.8956(95%CI:0.8291-0.9621), respectively. The appropriate cut-off values with biggest Youden index of D-dimer for non-responders were as follows: ΔD＜-145.4 ng/mL,D1>1375ng/mL,D2>1033ng/mL. Conclusion Plasma D-dimer level is strongly associated with tumor burden. D-dimer could be used to predict prognosis and treatment response in female patients with tumor.

目的 探讨分娩前后母体血浆D-二聚体的变化及其在预测和预防静脉血栓栓塞症的临床意义。方法 回顾性分析2015年5月在东莞市长安医院分娩的、产前与产后均进行了D-二聚体检测,产前与产后均未使用抗凝药物并产后随访6周的102例产妇的临床资料。结果 分娩后48~72小时,75.5%的产妇血浆D-二聚体水平下降,24.5%的产妇血浆D-二聚体水平升高。血浆D-二聚体水平升高的产妇60%存在发生VTE的高危因素,经积极预防,无静脉血栓栓塞症病例发生。结论 比较分娩前后母体血浆D-二聚体水平是有临床意义的。对分娩后母体血浆D-二聚体水平升高者,尤其是存在血栓高危因素者应高度重视,积极预防静脉血栓栓塞症。

目的 探讨血浆D-二聚体及纤维蛋白原在社区获得性肺炎患者严重程度评估的应用价值。方法 收集110例社区获得性肺炎患者的临床资料,根据CURB-65评分标准对患者进行分组,分别测定患者血浆D-二聚体及纤维蛋白原水平,比较其在不同分组间的差异及通过ROC曲线了解其在重症社区获得性肺炎诊断中的价值。结果 不同CURB-65分组间D-二聚体、纤维蛋白原水平比较差异有统计学意义(P<0.05),重症肺炎组D-二聚体、纤维蛋白原水平明显高于非重症肺炎组(P<0.05)。ROC曲线显示入院D-二聚体、纤维蛋白原水平诊断重症肺炎曲线下面积(AUC)分别为0.815、0.777。结论 血浆D-二聚体及纤维蛋白原可以有效评估社区获得性肺炎患者病情的严重程度,其是诊断重症肺炎的一个良好指标。

Objective To evaluate the prediction and evaluation of plasma D-dimer and fibrinogen levels upon the severity of community acquired pneumonia(CAP). Methods Clinical variables of 180 patients with CAP were evaluated and divided into different groups by CURB65.Plasma D-dimer and fibrinogen were measured to compare their levels among different groups and evaluate the prediction in the diagnosis of the severe CAP by ROC curve. Results The mean D-dimer and fibrinogen level were different significantly among different CURB65 groups. D-dimer and fibrinogen level of severe CAP were significantly higher than non-serious pnrumonia group. The area under the curve of the D-dimer, fibrinogen in the diagnosis of severe pneumonia were 0.815, 0.777. Conclusion Plasma D-dimer and fibrinogen can effectively evaluate the severity of illness in patients with community acquired pneumonia and they could be useful for assessment of the severity of CAP.

目的 检测年轻原发性高血压病患者(≤40岁)血清中D-二聚体(D-Dimer)、超敏C反应蛋白(CRP)的表达水平并观察两者的相关性。方法 收集原发性高血压病的年轻患者40例作为观察组,无高血压病等心脑血管疾病的社区居民40例作为对照组,晨起空腹抽血,电化学发光法测定血清D-Dimer、CRP表达量,同时行Pearson检验分析两者关联性。结果 观察组血清D-Dimer、CRP表达量较对照组均升高(P＜0.05),结果存在统计学意义;观察组D-Dimer、CRP阳性率较对照组均升高(P＜0.05);且两者相关,相关系数r=0.71,P＜0.01。结论 年轻原发性高血压病患者血清D-Dimer及CRP的表达量较无高血压病居民提高,且D-Dimer与CRP在机体内的表达存在相关性,上述两种血清标记物作为高血压疾病发生、发展评价指标的相关价值值得探究。

Objective To detect the serum D-Dimer and C-reactionprotein expression levels in essential hypertension patients and observe the correlation between both of them. Methods 40 young essential hypertension patients as observer group; and 40 persons without hypertension as control group. After taking the fasting blood, the serum level of D-Dimer and CRP was detected using electrochemiluminescence method. Simultaneously, the correlation of D-Dimer with CRP was tested using Pearson correlation coefficient. Results The serum level of D-Dimer and CRP was higher in young essential hypertension patients than those in the control group. And the difference was statistically significant (P<0.05). In 80 patients, the serum levels of D-Dimer and CRP were significantly correlated, and correlation coefficient r=0.71, there was significant difference (P<0.01). Conclusion D-Dimer and CRP are significantly increased in the serum of advanced young essential hypertension patients. And the serum level of D-Dimer is significantly correlated with the serum level of CRP in young essential hypertension patients. D-Dimer as an indicator of essential hypertension after review of the value worthy of further study.