• Chris Stamy, Dan M Shane, Levi Kannedy, Paul Van Heukelom, Nicholas M Mohr, Jodi Tate, Kelsey Montross, and Sangil Lee.
• From the, Department of Emergency Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA.
• Acad Emerg Med. 2021 Jan 1; 28 (1): 82-91.

ObjectivesWe sought to evaluate the impact of an emergency psychiatric assessment, treatment, and healing (EmPATH) unit on emergency department (ED) revenue, psychiatric boarding time, and length of stay (LOS).MethodsWe conducted a before-and-after economic evaluation of a single academic midwestern ED (60,000 annual visits) for all adult (≥18 years) patients before (December 2017-May 2018) and after (December 2018-May 2019) opening an EmPATH unit. These are outpatient hospital-based programs that provide emergent treatment and stabilization for mental health emergencies from ED patients. The Holt-Winters method was used to forecast pre-EmPATH expected ED levels of patients leaving without being seen, leaving against medical advice, eloping, or being transferred using 3 years of ED visits. ED revenues were calculated by finding the difference of pre-EmPATH expected and post-EmPATH observed values and multiplying by the revenue per visit. ED boarding time and LOS were obtained from the hospital's electronic medical record.ResultsThere were 23,231 and 23,336 ED visits evaluated during the pre- and post-EmPATH unit periods. The ED generated an estimated additional $404,954 in the 6 months and $861,065 annually after the implementation of the EmPATH unit. The median (interquartile range [IQR]) psychiatric boarding time decreased from 212 (119-536) minutes to 152 (86-307) minutes (mean difference = 189 minutes, 95% confidence interval [CI] = 150 to 228 minutes) and median (IQR) LOS decreased from 351 (204-631) minutes to 334 (212-517) minutes (mean difference = 114 minutes, 95% CI = 87 to 143 minutes).ConclusionThe EmPATH unit had a positive impact on ED revenue and decreased ED boarding time and LOS for psychiatric patients.© 2020 by the Society for Academic Emergency Medicine.

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