Early Task Initiation and Other Load-Adaptive Mechanisms in the Emergency Department

• 成果类型: Article
• 署名作者: Batt, Robert J.; Terwiesch, Christian
• 署名单位: University of Wisconsin System; University of Wisconsin Madison; University of Pennsylvania; University of Pennsylvania
• 刊物名称: MANAGEMENT SCIENCE
• ISSN/ISSBN: 0025-1909
• DOI: 10.1287/mnsc.2016.2516
• 发表日期: 2017
• 页码: 3531-3551
• 关键词: Healthcare Operations; emergency department; empirical; queuing

摘要

We study a multistage service process that adapts to system occupancy level. Using operational data from more than 140,000 patient visits to a hospital emergency department, we show that the system-level performance of the emergency department is an aggregation of several simultaneous server-level workload response mechanisms. We identify early task initiation as a between-stage adaptive response mechanism that occurs when an upstream stage initiates tasks that are normally handled by a downstream stage. We show that having some diagnostic tests ordered during the triage process reduces treatment time by 20 minutes, on average. However, ordering too many tests at triage can lead to an increase in the total number of tests performed on the patient. We also demonstrate the presence of other response mechanisms such as queuing delays for tasks such as medication delivery, and rushing as nurses spend less time with their patients when the queue length is high.