Gynecologic Surgical Subspecialty Training Decreases Surgical Complications in Benign Minimally Invasive Hysterectomy.

Objective: To evaluate the impact of gynecologic subspecialty training on surgical outcomes in benign minimally invasive hysterectomies (MIHs) while accounting for surgeon volume.

Methods: Retrospective cohort study of patients who underwent an MIH between 2014 and 2017. Methods: Single community hospital system. Methods: Patients were identified via Current Procedural Terminology codes for MIH: vaginal, laparoscopic, or robotic. Exclusion criteria included a gynecologic cancer diagnosis or concomitant major procedure at the time of hysterectomy. One thousand six hundred thirty-one patients underwent a benign MIH performed by a gynecologic generalist or a subspecialist in minimally invasive gynecologic surgery, urogynecology and pelvic reconstructive surgery, or gynecologic oncology; 125 hysterectomies were vaginal, 539 were conventional laparoscopic, and 967 were robotic.

Results: Surgical outcomes, including intraoperative complications, operative outcomes, and postoperative readmissions and reoperations, were compared between generalists and subspecialists and were stratified by surgeon volume status, with high-volume (HV) defined as performing 12 or more hysterectomies annually. Odds ratios for the primary outcome, Clavien-Dindo Grade III complications (which included visceral injuries, conversions, and reoperations within 90 days), were calculated to evaluate the impact of subspecialty training while accounting for surgeon volume status. Of 1631 MIHs, 855 (52.4%) were performed by generalists and 776 (47.6%) by subspecialists. HV generalists performed 618 (37.9%) of MIHs, and 237 (14.5%) were performed by low-volume generalists. All subspecialists were HV surgeons; 38.1% of generalists were HV. The odds ratio of a Clavien-Dindo Grade III complication was 0.39 (0.25-0.62) for hysterectomies performed by subspecialists compared to HV generalists after adjusting for potential confounding variables (p <.001). Subspecialists and HV surgeons had significantly lower incidences of visceral injuries, transfusions, blood loss over 500 mL, and conversions compared with generalists and low-volume surgeons, respectively.

Conclusions: Both subspecialty training and high surgeon volume status are associated with a lower risk of surgical complications in benign MIH. Subspecialty training is associated with a reduction in surgical complications even after accounting for surgeon volume.