A retrospective study on evaluating GAP, MGAP, RTS and ISS trauma scoring system for the prediction of mortality among multiple trauma patients

Objectives: Predicting the outcome of trauma helps clinician to prioritize patients and provide timely and effective treatment. Several scoring systems are implemented to predict prognosis and mortality among these patients. Our study aims to use four scoring systems to predict mortality among multiple trauma patients. Methods: In retrospective descriptive study, the data was collected from records of (XXX) of multiple trauma patients referred to the hospital from June 2019-January 2020. The patients were scored using four scoring systems: MGAP (mechanism, Glasgow coma scale, age, and arterial pressure), GAP (Glasgow coma scale, age, and arterial pressure), ISS (injury severity score) and RTS (revised trauma score). Results: The mean age of the patients was 37.4 +/- 4.2 years and of 112 patients, 92 patients (82.1%) were males. Sensitivity of GAP, RTS and ISS was 100% in predicting mortality where MGAP had highest specificity, 97.2%. All four scoring systems significantly predicted mortality, p < 0.001, respectively and the highest area under the curve was for RTS criteria, 0.969. Conclusion: MGAP, GAP, RTS and ISS were all effective in predicting mortality among multiple trauma patients whereas MGAP had both, highest sensitivity and specificity. Scoring trauma for mortality can be achieved by using any of the systems, provided the information required for score can be obtained.