CHEST:右室-肺动脉耦合和舒张功能对肺动脉高压治疗的反应

2021-10-13 刘少飞 MedSci原创

肺动脉高压(Pulmonary Arterial Hypertension, PAH) 是一类以肺血管阻力进行性升高为主要特征的疾病。右心功能衰竭是导致PAH患者死亡的重要原因。

研究背景:

多参数风险评估用于肺动脉高压 (PAH) 以进行靶向治疗。然而,这种策略并不完美,因为大多数患者在初始治疗后仍处于中等或高风险,治疗的目标是低风险。右心室 (RV) 适应指标是很有前景的工具,可能有助于完善我们的治疗策略。

研究问题:

随着时间的推移,RV 适应是否可以预测治疗反应?

研究设计和方法:

我们在基线、随访 1(3 个月)和随访 2(18 个月)通过导管插入术和心脏成像纵向评估了 52 名初治晚期 PAH 患者。如果未达到 I-II 级功能,所有患者均接受胃肠外曲前列环素的目标导向治疗和/或治疗升级的联合治疗。在随访 1 时将治疗反应评估为无反应者(死亡)或反应者,并在随访 2 时再次评估为超级反应者(低风险)或部分反应者(高/中风险)。多参数风险基于简化的 ERS/ESC 指南评分。 RV 适应通过单搏耦合比 (Ees/Ea) 和舒张功能与舒张弹性 (Eed) 进行评估。数据表示为平均值±SD 或比值比 [95% CI]。

研究结果:

9 名患者 (17%) 无反应。 PAH 定向治疗将 ERS ​​低风险从基线时的 1 (2%) 提高到随访 2 时的 23 (55%)。响应者 (0.9±0.4) 与非响应者相比,就诊时的 Ees/Ea 非显着升高( 0.6±0.4,p=0.09)但无法预测随访 2 时的超级反应状态(比值比 1.40 [0.28-7.0],p=0.84)。基线 RVEF 和 Eed 的变化成功预测了随访 2 时的超级反应者状态(优势比分别为 1.15 [1.0-1.27],p=0.009 和 0.29 [0.86-0.96],p=0.04)。

研究启示:在晚期 PAH 患者中,RV-PA 耦合不能区分出现时不可逆的 RV 衰竭(无反应者),但在随访 2 时显示出改善的晚期趋势。 Eed 和基线 RVEF 的早期变化是最佳预测因子治疗反应

文章出处:

The Right Ventricular-Pulmonary Arterial Coupling and Diastolic Function Response to Therapy in Pulmonary Arterial Hypertension, https://doi.org/10.1016/j.chest.2021.09.040

 

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    2022-06-23 Smile2680
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    2022-05-31 yahu
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