The impact of an enhanced recovery after minimally invasive surgery program on opioid use in gynecologic oncology patients undergoing hysterectomy.

Objectives: To evaluate the effects of an enhanced recovery after minimally invasive surgery (MIS-ERAS) protocol on opioid requirements and post-operative pain in patients undergoing minimally invasive hysterectomy on a gynecologic oncology service.

Methods: For this retrospective study, opioid use (oral morphine equivalents (OME)) and post-operative pain scores were compared between patients undergoing minimally invasive hysterectomy pre and post MIS-ERAS protocol implementation. Patients with chronic opioid use or chronic pain were excluded. Opioid use and pain scores were compared between groups using Wilcoxon Rank Sum, Student's t-test, and multiple linear regression. Compliance and factors associated with opioid use and pain scores were assessed.

Results: The MIS-ERAS cohort (n = 127) was compared to the historical cohort (n = 99) with no differences in patient demographic, clinical or surgical characteristics observed between groups. Median intra-operative and inpatient post-operative opioid use were lower among the MIS-ERAS cohort (12.0 vs 32.0 OME, p < .0001 and 20.0 vs 35.0 OME, p = .02, respectively). Pain scores among MIS-ERAS patients were also lower (mean 3.6 vs 4.1, p = .03). After controlling for age, BMI, operative time, length of stay, cancer diagnosis, and surgical approach, the MIS-ERAS cohort used 10.43 fewer OME intra-operatively (p < .001), 10.97 fewer OME post-operatively (p = .019) and reported pain scores 0.56 points lower than historical controls (p = .013). Compliance was ≥81% for multimodal analgesia elements and ≥75% overall.

Conclusions: Enhanced recovery after minimally invasive surgery protocol implementation is an effective means to reduce opioid use, both in the intra-operative and post-operative phases of care, among gynecologic oncology patients undergoing minimally invasive hysterectomy.