右心室喷射分数对慢性心性心力衰竭的结果的影响
Philippe Meyer1, Gerasimos S Filippatos, Mustafa I Ahmed
1Montreal Heart Institute, Montreal, Quebec, Canada.
Circulation
|January 6, 2010
概括
20%以下的右心室喷射率 (RVEF) 显著预测了心性心力衰竭患者的死亡率和心力衰竭住院治疗. 这一发现强调了RVEF作为心力衰竭管理中的关键预后指标.
科学领域:
- 心脏病学 心脏病学
- 心脏衰竭研究研究
- 临床结果 临床结果
背景情况:
- 之前对心力衰竭中右心室喷射率 (RVEF) 的研究受到小样本大小和短时间的随访时间的限制.
- 在HF中RVEF的预后意义,特别是与左心室功能障碍结合,需要进一步调查.
研究的目的:
- 调查基线RVEF对HF和左心室射出分数减少的大群患者临床结果的影响.
- 确定RVEF是否是该患者群体中死亡率和住院治疗的独立预测因素.
主要方法:
- 对2008年贝塔阻断剂生存评估试验 (BEST) 的参与者的分析,左心室喷射率≤35%.
- 使用封闭平衡放射性核酸室内扫描来评估RVEF,并将其分为四组:≥40%,30-39%,20-29%和<20%.
- 包括所有原因死亡率,心血管死亡率,HF死亡率,突然心脏病死亡,所有原因住院治疗和HF住院治疗在内的结果在平均24个月的随访期间进行了评估.
主要成果:
- 未调整的死亡率随着RVEF的下降逐渐增加,从RVEF≥40%组的27%到RVEF<20%组的47%不等.
- 多变量调整后的分析显示,RVEF <20%与所有原因死亡率的增加独立相关 (HR 1.32;P=0.034).
- 对于心血管死亡率 (HR 1.33; P=0.041),HF死亡率 (HR 1.61; P=0.037) 和HF住院治疗 (HR 1.39; P=0.007) 的调整后风险,在RVEF<20%的患者中,与RVEF≥40%的患者相比,观察到显著更高的风险.
结论:
- 基线RVEF<20%是心性心力衰竭患者死亡率的显著独立预测指标.
- 降低RVEF,特别是<20%,也是心力衰竭住院的强有力的预测因素.
- 这些发现强调了评估心力衰竭患者的RVEF对于风险分层和风险管理的重要性.
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