没有肺高血压的肺血管功能障碍:在异常性肺纤维化中具有独特的表型
Steven D Nathan1, Benham Tehrani2, Qiong Zhao2
1Advanced Lung Disease and Transplant Program, Inova Heart and Vascular Institute Inova Fairfax Hospital Falls Church Virginia USA.
Pulmonary circulation
|January 4, 2024
概括
没有肺高血压 (PH) 的异常性肺纤维化 (IPF) 患者可能具有升高的肺血管阻力 (PVR). 这一独特的群体显示中等死亡率,表明IPF中血管功能障碍的连续性.
科学领域:
- 肺部医学 肺部医学
- 心血管研究研究心血管研究
- 纤维化肺部疾病 纤维化肺部疾病
背景情况:
- 肺血管功能障碍在异常性肺纤维化 (IPF) 中被注意到,即使没有肺高血压 (PH).
- 在没有PH的IPF中了解肺血管阻力升高 (PVR) 对患者分层和管理至关重要.
研究的目的:
- 确定IPF患者没有PH的升高PVR的患病率和原因.
- 为了比较IPF患者与正常和升高的PVR (没有PH) 之间的血液动力学,心声学和成像数据.
- 为了比较IPF患者高PVR (没有PH),正常PVR (没有PH) 和PH患者的死亡率.
主要方法:
- 从205名IPF患者的血液动力学,心声学和功能呼吸道成像 (FRI) 数据的回顾性分析.
- 分类为组:没有PH和正常PVR的IPF (<3木单元),没有PH和高PVR的IPF (≥3木单元),和PH的IPF.
- 这些群体的生理参数和死亡率的比较.
主要成果:
- 在没有PH的146名IPF患者中,32名 (21.9%) 的PVR升高.
- 与正常PVR患者相比,患有IPF,PVR升高 (没有PH) 的患者表现出较低的心脏指数 (2.3比2.6L/分钟/m2) 和较高的三回速度 (3.4比3.0m/s).
- 在IPF患者中,FRI表明PVR升高 (没有PH) 的大血管较少.
- 在没有PH的IPF患者中,PVR升高与死亡率增加有关.
结论:
- 存在一种独特的IPF表型,具有升高的PVR但没有PH,其特点是特定的血液动力学和成像发现.
- 这种表型在IPF患者与没有PH之间具有中间预后,表明血管疾病的谱.
- 由FRI建议的异常血管解剖学可能有助于这种血液动力学概况.
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