在心力衰竭患者中,心肺功能表现在左心室辅助装置植入之前和之后
Cole Buchanan1, Collen Buchanan1, Maeveen Riordan1
1Department of Internal Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
JACC. Heart failure
|August 26, 2023
概括
连续流动的左心室辅助装置 (CF-LVADs) 没有改善心力衰竭患者的运动能力,减少喷射率 (HFrEF) 患者. 植入后的血液动力学和功能能力保持着相似的状态,不管在运动期间调整速度.
科学领域:
- 心脏病学 心脏病学
- 机械循环支持 机械循环支持
- 运动生理学 运动生理学
背景情况:
- 患有心力衰竭的患者减少喷射分数 (HFrEF) 经历持续的功能限制,即使在连续流动左心室辅助装置 (CF-LVAD) 植入后.
- 了解CF-LVADs对运动血液动力学和功能能力的影响对于改善患者的治疗结果至关重要.
研究的目的:
- 在CF-LVAD植入之前和之后,对HFrEF患者运动血液动力学和功能能力的纵向变化进行表征.
- 评估运动期间CF-LVAD速率的变化对心血管功能和运动能力的影响.
主要方法:
- 十名HFrEF患者接受了三个侵入性心肺运动测试.
- 测试包括植入前,植入后的恒定转速和植入后的增加转速.
- 血液动力学,心脏输出 (直接Fick方法) 和气体交换通过肺动脉导管和间接热量计进行监测.
主要成果:
- 在CF-LVAD植入后,最大的氧气吸收没有显著改善 (P = 0.92).
- 在炼期间,肺动脉和肺毛细血管压力保持在较高水平,无论如何调整速度,变化最小.
- 在植入后的固定和调整速度条件之间,运动能力和血液动力学是相似的.
结论:
- 在HFrEF患者中,CF-LVAD植入并没有增强心血管血液动力学或运动能力.
- 无论在运动期间CF-LVAD转速是固定还是调整,运动性能都保持一致.
- 需要进一步的研究来确定LVADs的策略,以有效地缓解植入后的HFrEF症状.
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