The impact of frailty on rectal prolapse repair: a retrospective analysis of the national inpatient sample for clinical outcomes and health resource utilization

Abstract

Abstract Purpose Rectal prolapse commonly affects elderly, frail patients. The impact of frailty alone on surgical outcomes for rectal prolapse has not been thoroughly investigated. The aim of this study was to utilize the National Inpatient Sample and the modified frailty index (mFI-11) to compare postoperative outcomes between frail and robust patients undergoing surgery for rectal prolapse. Methods We conducted a retrospective population-based cohort study using the Healthcare Cost and Utilization Project (HCUP) NIS from 2015 to 2019. The mFI-11 was utilized to classify patients as frail or robust. The primary outcomes were overall in-hospital postoperative morbidity and mortality. The secondary outcomes included system-specific postoperative morbidity, length of stay (LOS), total in-hospital healthcare cost, and discharge disposition. These were assessed using univariable and multivariable regressions. Results A total of 2130 patients, 239 frail (mFI > 0.27) and 1,891 robust patients (mFI < 0.27) who underwent rectal prolapse repair were analyzed. After adjustment, frail patients had a higher rate of in-hospital mortality (OR 10.38, 95% CI 0.65–166.59, p = 0.098) and morbidity (OR 2.18, 95% CI 1.31–3.63, p = 0.003), longer LOS (MD 1.60 days, 95% CI 1.05–2.44, p = 0.028), and greater cost of treatment (MD $15,561.56, 95% CI − 6023.12–37,146.25, p = 0.157) than robust patients. Conclusion Frailty increases postoperative morbidity and mortality and cost more to the healthcare system overall for patients undergoing rectal prolapse repair. This retrospective study is limited by selection bias and residual confounding. Consideration of preoperative optimization programs for frail patients undergoing surgery for rectal prolapse is an important next step to mitigate these poor outcomes.