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In this article, a methodology was developed to quantify the deficit in health care anticipated due to a loss of functionality of a hospital emergency department (ED) and a surge in demand due to regional damage in an earthquake scenario. Earthquake\u2010induced patient arrivals were calculated using multi\u2010severity casualty estimation for the catchment area of the hospital. The surge in patients (demand) was then compared to the ability of the hospital to treat patients (capacity) based on anticipated functionality. Nonlinear response history analysis of the hospital building was performed using simplified structural models, and the structural and non\u2010structural component damage was estimated based on FEMA P\u201058. Expected damage was linked to the post\u2010earthquake functionality of the ED service areas on each floor by incorporating the fault\u2010tree analysis method. Finally, discrete event simulation was used to evaluate the ED surge capacity, providing hospital performance metrics, such as wait times (WTs) and length of stay (LOS) for patients of ranging acuity. A case study of a hospital in the City of Vancouver subjected to an M\n                    <jats:sub>w<\/jats:sub>\n                    9.0 Cascadia Subduction Zone scenario earthquake was presented. Emergency rooms (ERs) were identified as the ED bottleneck during the emergency response. The mean ER WT exceeded its limit of 2 h and reached up to 17 h in the most unfavorable simulation. Likewise, the mean LOS nearly doubled from 6.5 to 12 h, also exceeding the established target of 10 h. The deployment of field hospitals for less severe patients as an emergency plan to mitigate the ED overcrowding was also analyzed to demonstrate that the methodology can be used as a decision support tool to improve healthcare disaster planning.\n                  <\/jats:p>","DOI":"10.1177\/87552930221128607","type":"journal-article","created":{"date-parts":[[2022,11,17]],"date-time":"2022-11-17T05:20:27Z","timestamp":1668662427000},"page":"402-433","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":14,"title":["Evaluating post\u2010earthquake functionality and surge capacity of hospital emergency departments using discrete event simulation"],"prefix":"10.1002","volume":"39","author":[{"given":"Gerald","family":"Palomino Romani","sequence":"first","affiliation":[{"name":"Department of Civil Engineering University of British Columbia Vancouver BC Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7011-2572","authenticated-orcid":false,"given":"Kristen","family":"Blowes","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering University of British Columbia Vancouver BC Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2116-1201","authenticated-orcid":false,"given":"Carlos","family":"Molina Hutt","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering University of British Columbia Vancouver BC Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,2]]},"reference":[{"key":"e_1_2_15_2_1","unstructured":"AchourN(2007)Estimation of malfunction of a healthcare facility in case of earthquakes. 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