• Junhyup Song, Sinyoung Kim, Hyun Soo Chung, Incheol Park, Soon Sung Kwon, and Jinwoo Myung.
• Department of Laboratory Medicine.
• Eur J Emerg Med. 2023 Aug 1; 30 (4): 260266260-266.

Background And ImportanceAppropriate decision-making is critical for transfusions to prevent unnecessary adverse outcomes; however, transfusion in the emergency department (ED) can only be decided based on sparse evidence in a limited time window.ObjectivesThis study aimed to identify factors associated with appropriate red blood cell (RBC) transfusion in the ED by analyzing retrospective data of patients who received transfusions at a single center.Outcome Measures And AnalysisThis study analyzed associations between transfusion appropriateness and sex, age, initial vital signs, an ED triage score [the Korean Triage and Acuity Scale (KTAS)], the length of stay, and the hemoglobin (Hb) concentration.Main ResultsOf 10 490 transfusions, 10 109 were deemed appropriate, and 381 were considered inappropriate. A younger age ( P  < 0.001) and a KTAS level of 3-5 ( P  = 0.028) were associated with inappropriate transfusions, after adjusting for O 2 saturation and the Hb level.ConclusionsIn this single-center retrospective study, younger age and higher ED triage scores were associated with the appropriateness of RBC transfusions.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.

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