Crit Care:中危肺栓塞患者预测临床恶化的超声心动图指标

2022-06-08 MedSci原创 MedSci原创

在临床恶化的中危肺栓塞患者中,基础右心室、右心室/左心室比值和右心室收缩功能指标存在显著差异。

急性肺栓塞可引起右心室功能异常,导致患者病情恶化,但是右心室扩张先于右心室收缩功能异常。近日,危重病医学领域权威杂志Critical Care上发表了一篇研究文章,该研究旨在明确经胸超声心动图(TTE)指标对中危肺栓塞成人5天内临床恶化的预测价值。

这是一项针对中危肺栓塞患者进行的前瞻性观察研究。为了确定TTE和临床预测因素与临床恶化的关系,研究人员使用单变量分析、约登指数(Youden’sindex)作为最佳阈值,并使用多变量分析报告了比值比(OR)或曲线下面积(AUC)。

在306例中危肺栓塞患者中,115例(37.6%)发生临床恶化。5天内出现临床恶化的肺栓塞患者基线右心室扩张更大,收缩功能更差,具体表现如下:右心室基底部直径为4.46±0.77 vs. 4.20±0.77cm;右心室/左心室基底部宽度比为1.14±0.29 vs. 1.02±0.24;三尖瓣环面收缩偏移(TAPSE)为1.56±0.55 vs 1.80±0.52cm;右心室收缩偏移速度分别为10.40±3.58和12.1±12.5cm/s。

预测患者病情恶化的最佳阈值为:右心室基底部宽度为3.9cm(OR为2.85[1.64-4.97]),右心室与左心室(RV/LV)比值为1.08(OR为3.32[2.07,5.33]),TAPS为1.98cm(OR为3.3[2.06,5.3]),收缩期偏移速度为10.10cm/s(OR为2.85[1.75,4.63]),利钠肽为190pg/mL(OR为2.89[1.81,4.62])。显著的独立预测因素为:短暂性低血压为6.1(2.2,18.9),最高心率为1.02(1.00,1.03),最高呼吸频率为1.02(1.00,1.04),右心室/左室比为1.29(1.14,1.47)。经过logistic回归和随机森林分析,AUC分别为0.80(0.73-0.87)和0.78(0.70-0.85)。

由此可见,在临床恶化的中危肺栓塞患者中,基础右心室、右心室/左心室比值和右心室收缩功能指标存在显著差异。

原始出处:

Anthony J. Weekes,et al.Intermediate-risk pulmonary embolism: echocardiography predictors of clinical deterioration.Critical Care.2022.https://ccforum.biomedcentral.com/articles/10.1186/s13054-022-04030-z

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