Vaginal Packing After Pelvic Floor Reconstructive Surgery: Does the Soaking Agent Used for Packing (Bupivacaine, Estrogen or Saline) Impact Postoperative Pain Scores?

Study objective: Vaginal packing is traditionally placed after pelvic floor reconstructive surgery (PFRS) to prevent hematoma formation. We seek to determine if there is a difference in postoperative pain scores after PFRS if vaginal packing is soaked with estrogen cream, bupivacaine, or saline. The primary outcome was pain as measured by a visual analog scale at 2 hours, 6 hours, and 1 day postoperatively. Secondary outcomes include changes in hemoglobin, urinary retention and length of stay (LOS) in hospital.

Design: Prospective cohort study.

Setting: Tertiary care academic teaching hospital. All PFRS is performed by fellowship-trained urogynecologists.

Participants: Consenting patients undergoing PFRS.

Interventions: At the completion of surgery, gauze packing soaked with either estrogen cream, 0.25% bupivacaine with 1% epinephrine, or normal saline was placed inside the vagina and removed on postoperative day 1.

Measurements and main results: We included 210 patients (74 estrogen, 66 bupivacaine, 70 saline). There was no significant difference in mean postoperative pain scores between the groups (estrogen, bupivacaine, saline-soaked vaginal packs respectively) at 2 hours (2.66 ± 2.25, 2.30 ± 2.17, 2.24 ± 2.07; p = .4656), 6 hours (2.99 ± 2.38, 2.52 ± 2.30, 2.36 ± 2.01; p = .2181) or on postoperative day 1 (1.89 ± 2.01 vs 2.08 ± 2.15 vs 2.44 ± 2.19; p = .2832) as measured by visual analog scale scores (0-10). There was no difference in the secondary outcomes of change in pre/postoperative hemoglobin (21.8 ± 10.73g/L, 20.09 ± 11.55 g/L, 21.7 ± 9.62g/L, p = .68), urinary retention (37%, 45% and 48%, p = .45), LOS (1.05 ± 0.46 days, 1.02 ± 0.12, 1.03 ± 0.24, p = .97) or in-hospital opioid usage during admission (represented in morphine milligram equivalents [median (IQR1, IQR3)], Kruskal-Wallis test): 11.25 mg (0, 33), 7.5 mg (0, 22.5) and 15 mg (0, 33.88) p = .41.

Conclusion: There was no difference found between soaking vaginal packing with estrogen cream, bupivacaine, or saline after PFRS with respect to postoperative pain scores, LOS, in-hospital opioid usage, or urinary retention. Saline-soaked packing is an equivalent alternative to estrogen or bupivacaine vaginal packing.