体质指数与败血症患者28天死亡率之间的关联:一项回顾性队列研究
Xu Zhang1, Weiwei Yuan1, Tingting Li1
1Yan'an University Affiliated Hospital, Yan'an, China.
The American surgeon
|November 28, 2024
概括
败血症患者的低体重指数 (BMI) 增加了28天死亡风险. 相反,肥胖个体 (BMI ≥35 kg/m2) 的死亡率明显较低,这表明BMI和败血症结果之间存在复杂的关系.
科学领域:
- 关键护理医学 关键护理医学
- 流行病学 流行病学
- 临床营养学 临床营养学
背景情况:
- 败血症是重症监护室 (ICU) 死亡的主要原因.
- 在ICU患者中肥胖率的增加需要了解其对败血症结果的影响.
- 身体质量指数 (BMI) 和败血症预后之间的关联尚未完全阐明.
研究的目的:
- 调查体质指数 (BMI) 分类与败血症患者28天死亡率之间的独立相关性.
- 分析不同BMI类别与重症监护机构的临床结果之间的关系.
主要方法:
- 使用了来自密集护理IV (MIMIC-IV) 数据库的医疗信息中心的数据.
- 根据世界卫生组织 (WHO) 的分类,将7836名患者分为五个BMI组.
- 采用多变量考克斯回归,曲线拟合和卡普兰-梅尔生存分析来评估BMI对28天死亡率的影响.
主要成果:
- 低BMI (体重不足) 与28天死亡率增加47%的风险相关 (HR 1.47).
- 二级/三级肥胖 (BMI ≥35 kg/m2) 显示,28天死亡风险降低了17% (HR 0.83).
- 在BMI和28天死亡率之间观察到非线性关系,体重不足的患者的生存率较差.
结论:
- 低BMI是导致败血症患者28天死亡率增加的重要危险因素.
- 较高的BMI类别 (肥胖) 与保护作用有关,显示死亡率降低.
- 体重指数与败血症结果有复杂的,非线性关联,强调需要细微的临床考虑.
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