• Ewai Zhang, Shih-Chiang Hung, Chien-Hung Wu, Ling-Ling Chen, Ming-Ta Tsai, and Wen-Huei Lee.
• Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
• Am J Emerg Med. 2017 Mar 1; 35 (3): 479-483.

ObjectivesErrors and adverse events associated with unexpected life-threatening events including unplanned transfer to the intensive care unit (ICU) and unexpected death after emergency department (ED) hospitalization are not well characterized. We performed this study to investigate the role of unexpected life-threatening events as a trigger to capture errors and adverse events for ED patient safety.MethodsThis prospective observational study enrolled adult non-trauma patients with unexpected life-threatening events within 24h of general ward admission from the ED of a medical center in Taiwan. The period of study was one year (in 2013); the medical records of enrolled patients were reviewed to identify adverse events and errors. We measured the incidence rate of adverse events or errors. Preventability, type, and physical injury severity of adverse events were investigated.ResultsOf 33,224 adult non-trauma ward admissions from the ED, 100 admissions (0.3%) met the study criteria. Incidence rate was 2% and 15% for errors and adverse events, respectively. In admissions involving error, all were preventable and the error type was overlooked of severity. In admissions that involved adverse events, 93.3% were preventable. There were 20% of admissions that resulted in death and 60% developed with severe physical injury. The adverse event types were diagnosis issues (53.3%), management issues (40%), and medication adverse events (6.7%).ConclusionsUnexpected life-threatening events within 24h of admission from the ED could be a useful trigger tool to identify preventable adverse events with serious physical injury in ED.Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.

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