Validation of the Surgical Apgar Score in a Veteran Population Undergoing General Surgery

BackgroundThe Surgical Apgar Score (SAS, a 10-point score calculated using limited intraoperative data) can correlate with postoperative morbidity and mortality after general surgery. We evaluated reliability of SAS in a veteran population.Study DesignWe prospectively collected demographics, medical history, type of surgery, and postoperative outcomes for any veteran undergoing general surgery at our institution (2006-2011). We categorized patients in 4 SAS groups and compared differences in morbidity and mortality.ResultsOur study population included 2,125 patients (SAS ≤4: n = 29; SAS 5−6: n = 227; SAS 7−8: n = 797; SAS 9−10: n = 1,072). Low-SAS patients were likely to have significant preoperative comorbidities and to undergo major surgery, and had increased postoperative morbidity and 30-day mortality.ConclusionsThe SAS is easily calculated from 3 routinely available intraoperative measurements, correlates with fixed preoperative risk (acute conditions, pre-existing comorbidities, operative complexity), and effectively identifies veterans at high risk for postoperative complications.