• Tatsuki Uemura, Akio Kimura, Wataru Matsuda, Hiroki Yamamoto, and Ryo Sasaki.
• Department of Emergency Medicine and Critical Care, Center Hospital of the National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan. Electronic address: tuemura@hosp.ncgm.go.jp.
• Injury. 2024 May 1; 55 (5): 111267111267.

BackgroundSevere trauma patients often require emergent interventions, such as massive transfusion, resuscitative procedures, and surgical procedures, and consume considerable human and medical resources. However, few practical indices can be easily used for emergent interventions. In recent years, it has become clear that rSIG (Reverse Shock Index multiplied by Glasgow Coma Scale [GCS] score), which can be easily calculated from vital signs, is a promising predictor of mortality. However, it is unclear whether rSIG is useful for emergent interventions.MethodsData collected by the Japan Trauma Data Bank for adult patients admitted directly from the scene of trauma between April 2019 and December 2020 were analysed. The outcomes were massive transfusion, resuscitative procedures, surgical procedures and emergent interventions. Emergent interventions were defined as the composite outcome of massive transfusion, resuscitative procedures, and surgical procedures. The ability of rSIG to predict massive transfusion was compared with that of the ABC score and FASILA score by receiver-operating characteristic curve analysis. The ability of rSIG to predict resuscitative and surgical procedures was compared with that of the Shock Index (SI), GCS, Triage Revised Trauma score (T-RTS), and Previous Simple Prediction (PSP) score. The ability of rSIG to predict emergent interventions was compared with that of T-RTS, PSP, ABC, and FASILA. In addition to rSIG, rSIM (Reverse Shock Index multiplied by best motor response score) was also analysed as a supplement.ResultsThe study included 32,201 patients, 6,371 of whom required emergent interventions. The area under the receiver-operating characteristic curve (AUROC) for massive transfusion was highest for rSIG (0.846 [95 % confidence interval 0.832-0.859]) and significantly higher for rSIG than for rSIM, ABC and FASILA (all p < 0.0001). AUROCs for resuscitative and surgical procedures were highest for rSIG (0.777 [0.769-0.785] and 0.731 [0.720-0.741], respectively) and significantly higher than those for rSIM, SI, GCS, T-RTS, and PSP (all p < 0.0001). The AUROC for emergent interventions was highest for rSIG (0.760 [0.753-0.768]) and significantly higher for rSIG than for rSIM, T-RTS, PSP, ABC, or FASILA (all p < 0.0001).ConclusionsrSIG is a simple and effective point-of-care predictor of emergent interventions during initial management of trauma.Copyright © 2023 The Author(s). Published by Elsevier Ltd.. All rights reserved.

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