通过使用电子健康记录数据,将心力衰竭与保留或轻微减少的喷射分数进行现象分组
Fardad Soltani1,2, David A Jenkins3, Amit Kaura4
1Division of Cardiovascular Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
BMC cardiovascular disorders
|July 5, 2024
概括
机器学习从电子健康记录中确定了三个不同的心力衰竭现象组. 这些群体表现出独特的临床特征和生存结果,有助于为心力衰竭 (HF) 患者提供个性化治疗.
科学领域:
- 心脏病学 心脏病学
- 医疗信息学 医疗信息学
- 机器学习 机器学习
背景情况:
- 心力衰竭 (HF) 保持或轻微减少喷射分数是一个异质的条件.
- 将其重新分类为不同的现象组对于有针对性的干预至关重要.
- 电子健康记录 (EHR) 数据为患者分层提供了宝贵的资源.
研究的目的:
- 通过使用EHR数据,在HF群体内识别不同的现象组.
- 为了比较已识别的现象组的临床特征和结果.
- 评估现象组对预测患者结果的有用性.
主要方法:
- 利用了来自2,187名英国医院患者的EHR数据,其中HF和射出分数≥40%.
- 应用无监督机器学习集群技术 (基于分区,基于模型,基于密度).
- 采用Cox比例风险和细灰竞争风险模型来分析结果 (死亡率,高风险住院).
主要成果:
- 确定了三个不同的现象组: 1) 年轻,女性,心脏代谢/冠状动脉疾病; 2) 虚弱,肺部疾病,心房动; 3) 系统性炎症,糖尿病,功能障碍.
- 在现象群中表现出明显的生存概况,增加了全因死亡风险 (p < 0.001).
- 现象组成员显著改善了比传统因素更好的生存预测,但没有预测HF住院治疗.
结论:
- 无监督机器学习有效地从EHR数据中识别出具有明显临床特征和生存概况的现象组.
- 这些现象组为个性化医学提供了一种新的方法来分层HF患者.
- 进一步的研究可能会对特定HF亚型的现象组定义及其预测价值进行细化.
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