小柯机器人

人工智能助力重症病人循环衰竭监护
2020-03-10 19:47

瑞士伯尔尼大学Tobias M. Merz、苏黎世联邦理工学院Gunnar Rätsch、Karsten Borgwardt等研究人员合作使用机器学习开发了一个能够预测重症监护室病人循环衰竭的系统。这一研究成果于2020年3月9日在线发表在《自然—医学》杂志上。

研究人员使用机器学习开发了一个预警系统,该系统使用了高分辨率数据库和240个患者年的数据,并整合了来自多个器官系统的测量结果。它预测了测试集中90%的循环衰竭事件,其中82%的事件在至少2小时之前就被确定,从而使得接收器工作特性曲线下的面积为0.94,而精确召回曲线下的面积为0.63。该系统平均每位患者每小时发出0.05条警报。该模型在独立的患者队列中进行了外部验证。与传统的基于阈值的系统相比,这一模型可以早期识别出有循环衰竭风险的患者,其虚警率要低得多。
 
据悉,重症监护临床医生面临着来自多个监控系统的大量测量结果。人类处理复杂信息的能力有限,这阻碍了对患者恶化的早期识别,而大量监视警报则会导致警报疲劳。
 
附:英文原文

Title: Early prediction of circulatory failure in the intensive care unit using machine learning

Author: Stephanie L. Hyland, Martin Faltys, Matthias Hser, Xinrui Lyu, Thomas Gumbsch, Cristbal Esteban, Christian Bock, Max Horn, Michael Moor, Bastian Rieck, Marc Zimmermann, Dean Bodenham, Karsten Borgwardt, Gunnar Rtsch, Tobias M. Merz

Issue&Volume: 2020-03-09

Abstract: Intensive-care clinicians are presented with large quantities of measurements from multiple monitoring systems. The limited ability of humans to process complex information hinders early recognition of patient deterioration, and high numbers of monitoring alarms lead to alarm fatigue. We used machine learning to develop an early-warning system that integrates measurements from multiple organ systems using a high-resolution database with 240 patient-years of data. It predicts 90% of circulatory-failure events in the test set, with 82% identified more than 2 h in advance, resulting in an area under the receiver operating characteristic curve of 0.94 and an area under the precision-recall curve of 0.63. On average, the system raises 0.05 alarms per patient and hour. The model was externally validated in an independent patient cohort. Our model provides early identification of patients at risk for circulatory failure with a much lower false-alarm rate than conventional threshold-based systems.

DOI: 10.1038/s41591-020-0789-4

Source: https://www.nature.com/articles/s41591-020-0789-4

Nature Medicine:《自然—医学》,创刊于1995年。隶属于施普林格·自然出版集团,最新IF:87.241
官方网址:https://www.nature.com/nm/
投稿链接:https://mts-nmed.nature.com/cgi-bin/main.plex


本期文章:《自然—医学》:Online/在线发表

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