吸入氧化对左心室功能障碍患者的心血管影响
1Department of Medicine, Brigham and Women Hospital, Boston, MA 02115.
吸入的氧化 (NO) 降低了晚期心力衰竭患者的肺血管抵抗力 (PVR). 然而,这种效应与增加的 LV 填充压力有关,这表明在 LV 功能障碍中使用 NO 治疗可能会产生不良结果.
科学领域:
- 心脏病学 心脏病学
- 肺高血压是什么意思 肺高血压
- 心脏衰竭研究研究
背景情况:
- 升高的肺血管阻力 (PVR) 在晚期心力衰竭中很常见.
- 氧化 (NO) 是一种血管扩张剂,可以放松肺动脉和静脉.
- 吸入的NO已在肺高血压中证明了肺血管扩张.
研究的目的:
- 研究吸入氧化 (NO) 对晚期心力衰竭患者肺血管阻力 (PVR) 的血液动力学影响.
- 为了测试吸入NO降低心力衰竭患者的PVR与左心室 (LV) 功能障碍的假设.
主要方法:
- 由于LV功能障碍导致的纽约心脏协会III/IV级心力衰竭的19名患者在10分钟内吸入了80ppm的NO.
- 血液动力学参数包括PVR,肺动脉压力,肺动脉压力和心脏指数被监测.
主要成果:
- 吸入的NO显著降低了PVR的31% (P < .001).
- 这种PVR的降低与肺动脉压的23%增加 (P < .001) 和心脏指数的4%降低 (P < .05) 相关.
- PVR的下降与基线PVR相反相关 (r = -.713; P < .001).
结论:
- 吸入NO可降低心力衰竭患者的PVR,这些患者患有LV功能障碍.
- 随着PVR的减少,LV填充压力增加.
- 目前的发现表明,单独吸入80ppm的NO可能对LV衰竭患者产生不良影响.
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