在杜克活动状态指数中减少系统的高估偏差 估计的峰值氧气摄入量:使用亚最大心肺运动测试的横截面分析
Kamren Hollingsworth1,2, Yiyu Zhao1,2, Jean G Charchaflieh1,2
1From the Department of Anesthesiology, Yale University School of Medicine, New Haven, Connecticut.
A&A practice
|February 23, 2026
概括
杜克活动状态指数 (DASI) 过高估计了老年人最大氧气吸收量 (VO2). 身体质量指数 (BMI) 显著影响了这种高估值,因此需要对准确的VO2评估进行校正因子.
科学领域:
- 心脏病学 心脏病学
- 运动生理学 运动生理学
- 老年病的医生 老年病的医生
背景情况:
- 杜克活动状态指数 (DASI) 是估计功能能力的常用工具.
- 心肺运动测试 (CPET) 提供了更准确的峰值氧气吸收 (VO2) 的测量.
- 以前的研究表明,DASI可能会高估VO2,特别是在某些人群中.
研究的目的:
- 在60岁以上的成年人中,调查DASI高估VO2峰值与亚最大CPET (smCPET) 相比,以研究人类学和人口学差异.
- 为了确定DASI高估的预测因素.
- 开发DASI衍生VO2估计的校正系数.
主要方法:
- 对226名年龄大于60岁的参与者的人类测量和人口统计数据的分析.
- DASI估计的VO2与smCPET衍生的峰值VO2的比较.
- 回归分析以确定高估的预测因素.
- 开发一个校正公式.
主要成果:
- 与smCPET相比,男性和女性都高估了使用DASI的峰值VO2 (男性:5.9±7.7毫升千克-1分钟-1;女性:7.2±7.1毫升千克-1分钟-1).
- 身体质量指数 (BMI) 是高估的重要预测指标,更高的BMI与更高的高估相关.
- 为了调整VO2估计值,开发了一种包含DASI总和,BMI,年龄和性别的校正因子.
结论:
- DASI高估了老年人VO2峰值,高估的程度受到BMI的影响.
- 开发的校正因子可以提高基于DASI的VO2估计在这个年龄组的准确性.
- 准确的VO2评估对于老年人群的临床决策至关重要.
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