早期检测ICU获得的感染使用高频电子健康记录数据
Meri R J Varkila1,2, Giacomo Lancia3, Maarten van Smeden4
1Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands. m.r.j.varkila@umcutrecht.nl.
BMC medical informatics and decision making
|July 21, 2025
概括
使用高频率生命体征的新动态模型可以提前48小时预测重症监护室 (ICU) 获得的感染. 这种机器学习方法对早期检测和在重症监护机构中改善患者的治疗结果充满希望.
科学领域:
- 关键护理医学 关键护理医学
- 医疗信息学 医疗信息学
- 医疗保健中的机器学习
背景情况:
- 鼻腔感染是重症监护室 (ICU) 患者发病率和死亡率的重要原因.
- 在ICU获得的感染 (ICU-AI) 的早期检测对于及时的临床管理和改善患者结果至关重要.
- 开发了一个动态预测模型,以主动估计感染风险.
研究的目的:
- 开发和评估ICU获得感染的动态预测模型.
- 利用高频纵向数据进行早期风险估计.
- 评估机器学习模型在预测感染风险方面的表现.
主要方法:
- 利用了混合三级ICU (MARS队列,2011-2018年) 成年患者的电子健康记录数据.
- 采用了考克斯基准模型,通过卷积神经网络 (CNN) 处理的高分辨率生命体征数据.
- 预期判断所有传染病发作以确定ICU-AI风险.
主要成果:
- 在4444名患者中分析了32178天的观察日,确定了1197例感染 (每日ICU风险为3.5%).
- 从生命体征中获得的CNN风险评分是ICU-AI的强有力的预测指标,尽管它没有实质性地改变整体风险预测.
- 模型歧视表现中等 (c指数0.64-0.72),对ICU-AI风险有所高估.
结论:
- 使用机器学习对高频生命体征进行动态建模方法,显示出作为连续床边感染风险指数的潜力.
- 需要进一步验证,以平衡深度学习模型的复杂性和可解释性及其临床决策支持益处.
- 这种方法可能有助于更早地识别ICU获得的感染,从而有可能改善患者管理.
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