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Hospital volume is associated with cost and outcomes variation in 2,942 pelvic reconstructions
David Chi1, Austin D Chen2, Alexandra Bucknor2
1Division of Plastic and Reconstructive Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Division of Plastic and Reconstructive Surgery, Washington University Medical Center, Saint Louis, MO, USA.
Background:
Complex pelvic reconstruction is challenging for plastic and reconstructive surgeons following surgical resection of the lower gastrointestinal or genitourinary tract. Complication rates and hospital costs are variable and may be linked to the hospital case volume of pelvic reconstructions performed. A comprehensive examination of these factors has yet to be performed.
Methods:
Data were retrieved for patients undergoing pedicled flap reconstruction after pelvic resections in the American National Inpatient Sample database between 2010 and 2014. Patients were then separated into three groups based on hospital case volume for pelvic reconstruction. Multivariate logistic regression and gamma regression with log-link function were used to analyze associations between hospital case volume, surgical outcomes, and cost.
Results:
In total, 2,942 patients underwent pelvic flap reconstruction with surgical complications occurring in 1,466 patients (49.8%). Total median cost was $38,469.40. Pelvic reconstructions performed at high-volume hospitals were significantly associated with fewer surgical complications (low: 51.4%, medium: 52.8%, high: 34.8%; p < 0.001) and increased costs (low: $35,645.14, medium: $38,714.92, high: $44,967.29; p < 0.001). After regression adjustment, high hospital volume was the strongest independently associated factor for decreased surgical complications (Exp[β], 0.454; 95% Confidence Interval, 0.346-0.596; p < 0.001) and increased hospital cost (Exp[β], 1.351; 95% Confidence Interval, 1.285-1.421; p < 0.001).
Conclusions:
Patients undergoing pelvic flap reconstruction after oncologic resections experience high complication rates. High case volume hospitals were independently associated with significantly fewer surgical complications but increased hospital costs. Reconstructive surgeons may approach these challenging patients with greater awareness of these associations to improve outcomes and address cost drivers.
