运动心电回声学用于评估症状AF患者的左心房功能
Jonathan P Ariyaratnam1, Ricardo S Mishima1, Olivia McNamee1
1Centre for Heart Rhythm Disorders, University of Adelaide, South Australian Health & Medical Research Institute and Royal Adelaide Hospital, Adelaide, Australia.
International journal of cardiology. Heart & vasculature
|January 11, 2024
概括
患有心房动 (AF) 的患者在运动期间表现出左心房 (LA) 功能受损. 鼻节律 (SR) 患者的LA功能降低与较低的运动能力有关,突出了LA.
科学领域:
- 心脏病学 心脏病学
- 心血管生理学心血管生理学
- 运动医学 运动医学
背景情况:
- 左心房 (LA) 功能对于增加运动期间心脏输出至关重要.
- 心房 (AF) 对LA机械反应对运动的影响仍然在很大程度上是未知的.
- 了解AF中的LA功能对于评估运动不耐症至关重要.
研究的目的:
- 为了研究左心房对有症状的AF患者运动的机械反应.
- 在这个人群中确定左心房功能障碍和运动不耐受之间的关联.
- 为了比较在AF与鼻节律 (SR) 中呈现的患者在运动期间的LA功能.
主要方法:
- 招募具有保留左心室喷射分数 (LVEF) 的症状性AF患者.
- 利用运动心声学和心肺运动测试 (CPET) 来评估休息和运动期间的LA功能.
- 采用二维和斑点跟踪回声心脏图谱进行详细的LA机械评估.
主要成果:
- 在SR中,患者在运动期间表现出增强的LA功能 (LA排空分数,LA储菌株).
- 患有AF的患者表现出休息时LA功能降低,在运动期间无法增强.
- 与SR患者相比,在AF患者中观察到降低的VO2峰值 (18.4与22.5毫升/公斤/分钟).
- 在SR患者中,LA功能 (LAEF,储库菌株) 与VO2Peak相关,独立于LV功能.
结论:
- 在AF患者中保持鼻腔节律与优越的LA储功能和运动增强有关.
- 在SR患者中,LA功能下降显著与运动耐受性降低有关,无论LV功能如何.
- 这些发现强调了LA机械特性对AF患者运动能力的重要性.
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