• Am J Emerg Med · Feb 2024

    Review Meta Analysis

    Prevalence of intra-abdominal injury among patients with seatbelt signs, a systematic review and meta-analysis.

    • Ali Pourmand, Emily Terrebonne, Vadym Shapovalov, Susan Kartiko, Rashed AlRemeithi, and Quincy K Tran.
    • Department of Emergency Medicine, George Washington University School of Medicine and Health Sciences, Washington, DC, United States. Electronic address: Pourmand@gwu.edu.
    • Am J Emerg Med. 2024 Feb 1; 76: 199206199-206.

    IntroductionThe advancement of seat belts have been essential to reducing morbidity and mortality related to motor vehicle collisions (MVCs). The "seat belt sign" (SBS) is an important physical exam finding that has guided management for decades. This study, comprising a systematic review and random-effects meta-analysis, asses the current literature for the likelihood of the SBS relating to intra-abdominal injury and surgical intervention.MethodsPubMed and Scopus databases were searched from their beginnings through August 4, 2023 for eligible studies. Outcomes included the prevalence of intra-abdominal injury and need for surgical intervention. Cochrane's Risk of Bias (RoB) tool and the Newcastle-Ottawa Scale (NOS) were applied to assess risk of bias and study quality; Q-statistics and I2 values were used to assess for heterogeneity.ResultsThe search yielded nine observational studies involving 3050 patients, 1937 (63.5%) of which had a positive SBS. The pooled prevalence of any intra-abdominal injury was 0.42, (95% CI 0.28-0.58, I2 = 96%) The presence of a SBS was significantly associated with increased odds of intra-abdominal injury (OR 3.62, 95% CI 1.12-11.6, P = 0.03; I2 = 89%), and an increased likelihood of surgical intervention (OR 7.34, 95% CI 2.03-26.54, P < 0.001; I2 = 29%). The measurement for any intra-abdominal injury was associated with high heterogeneity, I2 = 89%.ConclusionThis meta-analysis suggests that the presence of a SBS was associated with a statistically significant higher likelihood of intra-abdominal injury and need for surgical intervention. The study had high heterogeneity, likely due to the technological advancements over the course of this study, including seat belt design and diagnostic imaging sensitivity. Further studies with more recent data are needed to confirm these results.Copyright © 2023 Elsevier Inc. All rights reserved.

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