心脏再同步疗法用于节奏诱导心肌病:基线右心室节奏负担的作用
Ahmed Shahab1, Sean Lacy2, Jonathan K Chandler3
1Department of Cardiovascular Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA.
Pacing and clinical electrophysiology : PACE
|January 25, 2024
概括
较高的基线右心室 (RV) 节奏负担预测,在心脏再同步治疗 (CRT) 之后,左心室喷射率 (LVEF) 在节奏诱导心肌病 (PICM) 后会有更大的改善. 这一发现对于优化心力衰竭患者的CRT至关重要.
科学领域:
- 心脏病学 心脏病学
- 电子生理学 电子生理学
- 心脏衰竭管理的管理
背景情况:
- 心脏再同步治疗 (CRT) 适用于心力衰竭,其左心室喷射率 (LVEF) 减少,右心室 (RV) 节奏负担显著 (≥40%),导致节奏诱导心肌病 (PICM).
- 基线RV步调负荷对CRT响应的影响仍然不确定.
研究的目的:
- 调查基线RV步调负担的程度是否影响PICM患者CRT的有效性.
- 根据高 (≥90%) 与较低 (<90%) 基线RV节奏负担,对CRT进行LVEF变化和心声回应进行比较.
主要方法:
- 在2017年1月至2018年12月期间,对75名接受PICMCRT升级的患者进行了回顾性研究.
- 根据基线RV节奏负担,患者被分为两组:≥90% (n=56) 和<90% (n=19).
- 在CRT后3-12个月的LVEF变化和心声回应率 (≥10%的LVEF改善) 分析使用单变量和多变量模型.
主要成果:
- 基线RV节奏负担≥90%的患者在LVEF中表现出明显的改善,与负担<90% (15.7%对7.5%,p=0.003) 的患者相比.
- 基线RV节奏负荷≥90%是CRT升级后LVEF达到至少10%改善的强有力的预测指标 (p=0.005单变量,p=0.02多变量).
结论:
- 较高的基线RV节奏负担与PICM患者在CRT后LVEF的更显著改善有关.
- 这表明,RV节奏的更高程度可能预测CRT的更好反应,告知患者的选择和管理.
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