JAHA:肺功能在射血分数降低心力衰竭患者中的预后价值

2022-03-17 MedSci原创 MedSci原创

伴有肺动脉高压的射血分数降低的心力衰竭患者通气异常比没有肺动脉高压的患者更常见。然而,这种通气缺陷仅与没有肺动脉高压的患者的长期生存相关,无论其功能状态如何。

在射血分数降低的心力衰竭患者中经常观察到通气异常和肺动脉高压。近日,心血管疾病领域权威杂志JAHA上发表了一篇研究文章,研究人员旨在探究通气异常与射血分数降低心力衰竭患者肺动脉高压之间的关系,以及它们对预后的影响。

该研究共有440名接受综合超声心动图和肺活量测定的左心室射血分数≤40%的门诊患者(年龄为66.2±15.8岁;77%男性)入组。研究人员获得了受试者第一秒的总肺活量、用力肺活量和用力呼气量,并估计了肺动脉收缩压。肺动脉高压定义为肺动脉收缩压>50mmHg。该研究的主要终点是5年的全因死亡率。

肺动脉高压患者在第一秒内总肺活量、用力肺活量和用力呼气量显著降低。在25.9个月的中位随访期间,有111人死亡。考虑到年龄、性别、体重指数、肾功能、吸烟、左心室射血分数和功能容量后,总肺容量(每增加1个SD风险比[HR]为0.66;95%CI为0.46-0.96)、用力肺活量(HR/1SD为0.64;95%CI/1SD为0.48-0.84)和第一秒用力呼气量(HR/1SD为0.72;95%CI/1SD为0.53-0.98)均与无肺动脉高压患者的死亡率显著相关。Kaplan-Meier曲线显示肺功能受损(定义为第一秒用力呼气量≤预测值的58%或用力肺活量≤预测值的65%)与无肺动脉高压患者较高的死亡率相关(HR为2.85;95%CI为1.66-4.89),但在肺动脉高压患者中则没有(HR为1.05;95%CI为0.61-1.82)。

由此可见,伴有肺动脉高压的射血分数降低的心力衰竭患者通气异常比没有肺动脉高压的患者更常见。然而,这种通气缺陷仅与没有肺动脉高压的患者的长期生存相关,无论其功能状态如何。

原始出处:

Hao‐Chih Chang.et al.Prognostic Role of Pulmonary Function in Patients With Heart Failure With Reduced Ejection Fraction.JAHA.2022.https://www.ahajournals.org/doi/full/10.1161/JAHA.121.023422

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    2022-03-18 zhaohui6731
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    2022-03-18 追寻2008

    学习了

    0

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    2022-03-17 13746658d9m

    学习

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