在心力衰竭患者中开发呼吸系统分类系统
Ross Arena1, Jonathan Myers, Joshua Abella
1Department of Physical Therapy, Box 980224, Virginia Commonwealth University, Health Sciences Campus, Richmond, VA 23298-0224, USA. raarena@vcu.edu
一个新的通风器类系统使用微风至二氧化碳 (VE/VCO2) 生产斜率改善了心力衰竭患者的风险分层. 该系统将患者分为四个类别,预测两年内发生的心脏事件.
科学领域:
- 心脏病学 心脏病学
- 肺部病理学 肺部病理学
- 运动生理学 运动生理学
背景情况:
- 通过VE/VCO2斜率测量的呼吸系统效率是心力衰竭的一个关键预后指标.
- 目前的预后模型可以改进,以获得更好的临床应用.
研究的目的:
- 开发一个基于VE/VCO2倾斜的通风机分类系统.
- 在心力衰竭患者中,将VE/VCO2切割点与心脏相关事件相关联.
主要方法:
- 对448名心力衰竭患者进行心肺运动测试的分析.
- 确定VE/VCO2斜率,并对主要心脏事件 (死亡率,移植,LVAD) 进行2年的随访.
- 基于VE/VCO2值的4级通风器 (VC) 系统 (VC I-IV) 的开发.
主要成果:
- 在两年内发生了81次心脏事件.
- 在VE/VCO2斜坡分类方案显著 (AUC:0.78,P<0.001).
- 在不同类别中,无事件生存率有显著差异:VC I (97.2%),VC II (85.2%),VC III (72.3%),VC IV (44.2%) (P<0.001).
结论:
- 一个多层次的呼吸机类系统有效地分层了整个心力衰竭谱的风险.
- 这种分类系统有可能增强心力衰竭管理的临床决策.
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