Abstract
BACKGROUND: Emergency general surgery conditions are common, require urgent surgical evaluation, and are associated with high mortality and costs. Although appropriate interhospital transfers are critical to successful emergency general surgery care, the performance of emergency general surgery transfer systems remains unclear. We aimed to describe emergency general surgery transfer patterns and identify factors associated with potentially avoidable transfers. METHODS: We performed a retrospective cohort study of emergency general surgery episodes in 8 US states using the 2016 Healthcare Cost and Utilization Project State Inpatient and Emergency Department Databases and the American Hospital Association Annual Surveys. We identified Emergency Department-to-Inpatient and Inpatient-to-Inpatient interhospital emergency general surgery transfers. Potentially avoidable transfers were defined as discharge within 72 hours after transfer without undergoing any procedure or operation at the destination hospital. We examined transfer incidence and characteristics. We performed multilevel regression examining patient-level and hospital-level factors associated with potentially avoidable transfers. RESULTS: Of 514,410 adult emergency general surgery episodes, 26,281 (5.1%) involved interhospital transfers (Emergency Department-to-Inpatient: 65.0%, Inpatient-to-Inpatient: 35.1%). Over 1 in 4 transfers were potentially avoidable (7,188, 27.4%), with the majority occurring from the emergency department. Factors associated with increased odds of potentially avoidable transfers included self-pay (versus government insurance, odds ratio: 1.26, 95% confidence interval: 1.09-1.45, P = .002), level 1 trauma centers (versus non-trauma centers, odds ratio: 1.24, 95% confidence interval: 1.05-1.47, P = .01), and critical access hospitals (versus non-critical access, odds ratio: 1.30, 95% confidence interval: 1.15-1.47, P < .001). Hospital-level factors (size, trauma center, ownership, critical access, location) accounted for 36.1% of potentially avoidable transfers variability. CONCLUSION: Over 1 in 4 emergency general surgery transfers are potentially avoidable. Understanding factors associated with potentially avoidable transfers can guide research, quality improvement, and infrastructure development to optimize emergency general surgery care.