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arXiv 2304.06384cs.LG
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面向早期脓毒症预测的多子集方法

Multi-Subset Approach to Early Sepsis Prediction

University of Washington(华盛顿大学);CueZen Inc.(CueZen公司)

Kevin Ewig, Xiangwen Lin, Tucker Stewart, Katherine Stern, Grant O'Keefe, Ankur Teredesai, Juhua Hu

AI总结:

针对脓毒症早期预测中临床怀疑前6小时这一较大时间间隔问题,本文提出多子集方法,将前一子集输出的较早发生脓毒症的可能性作为附加特征输入目标子集,并结合逐小时生命体征数据的时间变化趋势,实验表明该方法能有效提升脓毒症早期预测性能。

摘要:

脓毒症是一种由宿主无法抵抗感染引起的危及生命的器官功能障碍,若未得到及时且适当的治疗,可能导致死亡。因此,在脓毒症高风险及脓毒症相关死亡率较高的危重症人群中,脓毒症的早期诊断和医疗干预对于为患者提供快速治疗至关重要。研究表明,将脓毒症检测提前6小时可促使更早使用抗生素,这与死亡率的改善相关。然而,诸如序贯器官衰竭评估(SOFA)等临床评分并不适用于早期预测,而机器学习算法有助于捕捉病情进展模式以进行早期预测。因此,我们旨在开发一种机器学习算法,在临床怀疑脓毒症前6小时预测其发生。尽管已有一些机器学习算法被应用于脓毒症预测,但其中许多方法未考虑到6小时并非一个短时间间隔这一事实。为应对这一较大时间间隔带来的挑战,我们探索了一种多子集方法,其中较早于6小时发生脓毒症的可能性由前一个子集输出,并作为附加特征输入到目标子集中。此外,我们利用观察窗口内按小时采样的数据(如生命体征)来推导时间变化趋势以进一步辅助预测,而这一点在以往研究中常被忽视。我们的实证研究表明,用于缓解6小时间隔问题的多子集方法以及所添加的时间趋势特征均有助于提升脓毒症相关早期预测的性能。

英文摘要:

Sepsis is a life-threatening organ malfunction caused by the host's inability to fight infection, which can lead to death without proper and immediate treatment. Therefore, early diagnosis and medical treatment of sepsis in critically ill populations at high risk for sepsis and sepsis-associated mortality are vital to providing the patient with rapid therapy. Studies show that advancing sepsis detection by 6 hours leads to earlier administration of antibiotics, which is associated with improved mortality. However, clinical scores like Sequential Organ Failure Assessment (SOFA) are not applicable for early prediction, while machine learning algorithms can help capture the progressing pattern for early prediction. Therefore, we aim to develop a machine learning algorithm that predicts sepsis onset 6 hours before it is suspected clinically. Although some machine learning algorithms have been applied to sepsis prediction, many of them did not consider the fact that six hours is not a small gap. To overcome this big gap challenge, we explore a multi-subset approach in which the likelihood of sepsis occurring earlier than 6 hours is output from a previous subset and feed to the target subset as additional features. Moreover, we use the hourly sampled data like vital signs in an observation window to derive a temporal change trend to further assist, which however is often ignored by previous studies. Our empirical study shows that both the multi-subset approach to alleviating the 6-hour gap and the added temporal trend features can help improve the performance of sepsis-related early prediction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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