第1组肺高血压中高输出心力衰竭的病理生理学和患病率
Yogesh N V Reddy1, Robert P Frantz2, William R Miranda2
1The Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota Reddy.Yogesh@mayo.edu.
The European respiratory journal
|February 19, 2026
概括
大约十分之一的1组肺高血压 (PH) 患者会出现高心力输出 (CO) 状态,这通常与血管扩张剂的使用增加有关. 这种高输出状态与不良的心脏重塑和增加死亡风险有关.
科学领域:
- 心脏病学 心脏病学
- 肺高血压研究 肺高血压研究
- 血液动力学 血液动力学
背景情况:
- 肺血管扩张剂可以增加心脏输出 (CO) 在1组肺高血压 (PH).
- 在这种患者群体中高CO的含义尚未完全理解.
- 了解高CO的病理生理学对于优化治疗至关重要.
研究的目的:
- 描述1组肺高血压 (PH) 中高心力输出 (CO) 的病理生理学.
- 研究与PH患者不同水平的CO相关的临床特征和结果.
主要方法:
- 一组449名1组PH参与者 (PVDOMICS) 的队列根据低,正常或高的心脏指数 (CI) 分类.
- 临床特征,血管扩张剂的使用和血液动力学参数在各组之间进行了比较.
- 分析了包括死亡率和移植率在内的结果.
主要成果:
- 9%的参与者具有高的CO状态,与密集的血管扩展剂使用和较低的肺血管抵抗 (PVR) 相关.
- 高二氧化碳与心脏重塑 (左心室和左心房扩大) 和心肌工作量增加有关.
- 尽管氧气供应增加,但外围氧气利用受损,与正常输出PH相比没有生存益处.
结论:
- 高输出状态影响大约10%的1组PH患者,通常与血管扩展剂强度有关.
- 这种状态的特点是不良的心脏重塑和心肌工作量增加.
- 需要进一步的研究来优化血管扩展剂的剂量,并探索与新型疗法 (如sotatercept) 的相互作用.
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