Higher hospital operative volume was associated with significantly decreased risk-adjusted mortality for all 10 emergency general surgery operations evaluated (P<0.001 for each).
Cohort (n=165,123)
Yes
Does higher hospital operative volume reduce risk-adjusted mortality in adults undergoing emergency general surgery?
Survival rates for nontrauma surgical emergencies are improved when operations are performed at higher-volume hospitals.
p-value: p=<0.001
OBJECTIVE: This study aimed to answer 2 questions: first, to what degree does hospital operative volume affect mortality for adult patients undergoing 1 of 10 common emergency general surgery (EGS) operations? Second, at what hospital operative volume threshold will nearly all patients undergoing an emergency operation realize the average mortality risk? BACKGROUND: Nontrauma surgical emergencies are an underappreciated public health crisis in the United States; redefining where such emergencies are managed may improve outcomes. The field of trauma surgery established regionalized systems of care in part because studies demonstrated a clear relationship between hospital volume and survival for traumatic emergencies. Such a relationship has not been well-studied for nontrauma surgical emergencies. METHODS: Retrospective cohort study of all acute care hospitals in California performing nontrauma surgical emergencies. We employed a novel use of an ecological analysis with beta regression to investigate the relationship between hospital operative volume and mortality. RESULTS: A total of 425 acute care hospitals in California performed 165,123 EGS operations. Risk-adjusted mortality significantly decreased as volume increased for all 10 EGS operations (P < 0.001 for each); the relative magnitude of this inverse relationship differed substantially by procedure. Hospital operative volume thresholds were defined and varied by operation: from 75 cases over 2 years for cholecystectomy to 7 cases for umbilical hernia repair. CONCLUSIONS: Survival rates for nontrauma surgical emergencies were improved when operations were performed at higher-volume hospitals. The use of ecological analysis is widely applicable to the field of surgical outcomes research.
Becher et al. (Thu,) conducted a cohort in Emergency general surgery (n=165,123). Higher hospital operative volume vs. Lower hospital operative volume was evaluated on Risk-adjusted mortality (p=<0.001). Higher hospital operative volume was associated with significantly decreased risk-adjusted mortality for all 10 emergency general surgery operations evaluated (P<0.001 for each).