Beyond just the operating room: characterizing the complete caseload of a tertiary acute care surgery service

Background: Most studies evaluating acute care surgery (ACS) models of care for patients with emergency general surgery (EGS) conditions have focused on patients who undergo surgery while admitted under the care of the ACS service. The purpose of this study was to prospectively examine the case mix of admissions and consultations to an ACS service at a tertiary centre to identify the frequency and distribution of both operatively and nonoperatively managed EGS conditions. Methods: In this prospective cohort study, we evaluated consecutive patients assessed by the ACS team between July 1 and Aug. 31, 2015, at a large Canadian tertiary care centre. This included all consultations and outside hospital transfers. Diagnoses, demographic characteristics, comorbidities, intervention(s), complications, readmission and in-hospital death were captured. Results: The ACS team was involved in the care of 359 patients, 176 (49.0%) of whom were admitted under the direct care of the ACS team. Nonoperative care was indicated in 82 patients (46.6%) admitted to the ACS service and 151 (82.5%) of those admitted to a non-ACS service (p < 0.001). Bowel obstruction (37 patients [21.0%]) was the most common reason for admission, followed by wound/abscess (24 [13.6%), biliary disease (24 [13.6%]) and appendiceal disease (23 [13.1%]). Rates of 30-day return to the emergency department and readmission were 17.0% and 9.1%, respectively, and the in-hospital mortality rate was 1.7%. Conclusion: Acute care surgery teams care for a wide breadth of disease, a considerable amount of which is managed nonoperatively.