The impact of minimally invasive gynecologic surgery subspecialty training on outcomes of benign laparoscopic hysterectomy- a retrospective cohort study.

ABSTRACT

STUDY OBJECTIVE: To compare surgical outcomes among patients undergoing minimally invasive hysterectomy (MIH), laparoscopic or robotic, with minimally invasive gynecologic surgery (MIGS) subspecialists, gynecologic oncologists (GO), or general obstetrician/gynecologists (OB/GYN). DESIGN: Retrospective cohort study. SETTING: Quaternary care academic hospital. PATIENTS OR PARTICIPANTS: Patients undergoing MIH for benign indications from 3/2015 to 3/2020 were included. INTERVENTIONS: MIH. MEASUREMENTS AND MAIN RESULTS: The primary outcome was the odds of a composite of any intra- or postoperative complications within 30 days of surgery by surgeons' group. A total of 728 MIHs were performed during the study period and constituted the cohort, of which 368 (50.5%) were performed by MIGSs, 144 (19.8%) by GOs, and 216 (29.7%) by OB/GYNs. Intra- and postoperative complications occurred in 11.7% of the MIGS group, 22.9% of the GO group (OR 2.25, 95%CI 1.36-3.71) and 25.9% of the OB/GYN group (OR 2.65, 95%CI 1.70-4.12). Major intra- or postoperative complications were associated with surgeons' groups (OR 7.02 95%CI 2.67-18.47, and 6.84 95%CI 2.73-17.16 for GO and OB/GYN compared with MIGS, respectively). Intraoperative complication rates were significantly lower for MIGS surgeons (1.4%) than for GOs (9.0%, OR 7.21 95%CI 2.52-20.60) and OB/GYNs (9.7%, OR 7.82 95%CI 2.90-21.06). There was a higher odd of postoperative complications for OB/GYNs compared with MIGS (18.5% vs. 10.9%, OR 1.86 95%CI 1.16-3.00). Rates of conversion to laparotomy were lowest among MIGS surgeons (0.3%) compared to GOs (7.6%) and OB/GYNs (7.9%). Estimated blood loss 90th percentile or higher and surgery time 90th percentile or higher were more common for OB/GYNs compared with MIGS surgeons (OR 2.12 95%CI 1.07-4.22; OR 2.48 95%CI 1.49-4.12, respectively). CONCLUSION: Fellowship trained MIGS subspecialists had improved surgical outcomes for benign MIH compared with GOs and OB/GYNs, with lower rates of perioperative complications and fewer conversions to laparotomy.