A Novel Injection Technique for Extended-Release Local Anesthetic After Posterior Colporrhaphy and Perineorrhaphy: A Randomized Controlled Study

Objectives To evaluate the effect of vaginal intraoperative infiltration of liposomal bupivacaine on vaginal pain among patients undergoing posterior colporrhaphy and perineorrhaphy. Methods This was a randomized, placebo-controlled trial offered to women undergoing posterior colporrhaphy and perineorrhaphy with concomitant pelvic reconstructive procedures. Liposomal bupivacaine or normal saline placebo (30 mL) was injected into the posterior vaginal compartment and perineal body in 2- to 3-mL increments, using a systematic technique. All participants received 10-mL 0.25% bupivacaine with epinephrine prior to incision. Perioperative care was standardized. The primary outcome was vaginal pain as measured by a visual analog scale. Results One hundred twenty-six women were screened, and 72 were included. Demographic characteristics were similar. Median visual analog scale was not different at any time point (P = 0.81). There were no differences in secondary outcomes, including narcotic use (37.5 vs 37.5 mg morphine equivalents, P = 0.51; placebo vs liposomal bupivacaine), time to first opioid (68 vs 89.5 minutes, P = 0.56), antiemetic doses (3 vs 2, P = 0.07), hospital length of stay (24 vs 21.9 hours, P = 0.98), length of stay in postanesthesia care unit (93 vs 100 minutes, P = 0.32), proportion of patients who had a bowel movement within the first 3 postoperative days (65.7 vs 59.5% P = 0.36), or successful voiding trials (45.7 vs 59.5%, P = 0.24). There were no differences in patient satisfaction or postoperative adverse events. Conclusions In this study of pelvic reconstructive surgeries with posterior colporrhaphy and perineorrhaphy, there were no differences in pain scores or any secondary outcomes between liposomal bupivacaine and placebo injected into the posterior vaginal compartment.