• Daniel L Shaw, Adrian D Haimovich, Anne V Grossestreuer, Maria E Cebula, Larry A Nathanson, Sandra L Gaffney, Alicia T Clark, Bryan A Stenson, and David T Chiu.
• Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA. Electronic address: dlshaw@bidmc.harvard.edu.
• Am J Emerg Med. 2024 Dec 1; 86: 110114110-114.

BackgroundMany patients require inter-hospital transfer (IHT) to tertiary Emergency Departments (EDs) to access specialty services. The purpose of this study is to determine operational outcomes for patients undergoing IHT to a tertiary academic ED, with an emphasis on timing and specialty consult utilization.MethodsThis study was a retrospective observational cohort study at a tertiary academic hospital from 10/1/21-9/30/22. Key operational metrics, including specialty consultations, were queried from the ED Information System (EDIS). Data were analyzed for temporal variation in operational metrics and consulting patterns between transferred and non-transferred patients, stratified by time of day and week.ResultsDuring the study period there were 50,589 ED patient encounters, of which 3196 (6.3 %) were identified as IHTs. Transferred patients made up a larger proportion of patient arrivals in off-hours compared to daytime hours (p < 0.001). Transferred patients were more likely to be admitted to the hospital (76 % vs 35 %, p < 0.001), go directly to a procedure (6 % vs 2 %, p < 0.001), or receive a specialty consult (90 % vs 42 %, p < 0.001), regardless of the day of week or time of day. Relative risk of consults amongst transferred patients varied by service, though was particularly increased amongst surgical sub-specialties.ConclusionsTransferred patients represented a larger proportion of ED volume during evening and overnight hours, received more consults, and had higher likelihood of admission. Consults for transfers were disproportionately surgical subspecialties, though few patients went directly to a procedure. These findings may have operational implications in optimizing availability of specialty services across regionalized health systems.Copyright © 2024 Elsevier Inc. All rights reserved.

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