Management of Blunt Traumatic Abdominal Wall Hernias: An Analysis of the National Trauma Data Bank

Background Blunt traumatic abdominal wall hernias (TAWH) are uncommon injuries with variable presentation and unstandardized management. Few national systematic descriptive studies have been conducted about TAWH. We present a retrospective descriptive study utilizing the National Trauma Data Bank (NTDB) to better characterize risk factors associated with TAWH and management practices.Methods The NTDB (years 2016-2019) was examined for adult blunt trauma patients who had TAWH. Data included demographics, trauma-specific variables, management strategies, and outcome measures. Descriptive statistics were performed by univariate analysis.Results 2 871 367 adult blunt trauma patients were identified in the NTDB dataset. 206 had abdominal wall hernias (<.01%). Compared with the overall blunt trauma cohort, patients with TAWH had higher body mass index (BMI) and Injury Severity Scores (ISS), were more likely to be male, and had a higher mortality rate. 44 patients (21%) underwent operative management during their initial admission. Surgically managed patients were younger, had higher ISS and BMI, and were more likely to have concomitant intra-abdominal injuries. The few patients who had laparoscopic surgery had significantly higher BMI. Patients managed operatively had longer hospital and ICU lengths of stay and increased incidence of medical complications.Conclusions TAWH is an uncommon complication of blunt abdominal trauma, associated with higher BMI, ISS, and increased mortality. Initial operative management was pursued in 21% of cases, more often in younger, more severely injured patients with other intra-abdominal injuries. Evidence-based guidelines, based on multicenter prospective studies with longer follow-up, should be developed for management of these unique injuries.