2020 Update on pelvic floor dysfunction

How can we efficiently approach the postoperative void trial for pelvic floor surgery?

Chao L, Mansuria S. Postoperative bladder filling after outpatient laparoscopic hysterectomy and time to discharge: a randomized controlled trial. Obstet Gynecol. 2019;133:879-887.

Despite efforts to implement and promote enhanced recovery after surgery pathways, waiting for spontaneous void can be a barrier to efficient same-day discharge. Chao and Mansuria conducted a randomized controlled trial (RCT) to determine whether backfilling the bladder intraoperatively, compared with spontaneous (physiologic) filling, would reduce time to discharge in patients undergoing total laparoscopic hysterectomy (TLH) or supracervical hysterectomy (SCH).

Study details

Women undergoing TLH or laparoscopic SCH for benign indications were randomly assigned to undergo either a backfill-assisted void trial in the operating room with 200 mL of sterile normal saline (n = 75) or Foley catheter removal with spontaneous fill in the postanesthesia care unit (PACU) (n = 78).

For both groups, the maximum time allowed for spontaneous void was 5 hours. A successful void trial was defined as a voided volume of at least 200 mL. If a patient was unable to void at least 200 mL, a bladder scan was performed, and the patient was considered to have failed the void trial if a PVR of 200 mL or greater was noted. If the PVR was less than 200 mL, the patient was given an additional 1 hour to spontaneously void 200 mL by 6 hours after the surgery. Patients who failed the void trial were discharged home with a transurethral catheter.

The primary outcome was time to discharge, and the sample size (153 participants included in the analysis) allowed 80% power to detect a 30-minute difference in time to discharge. Participant baseline characteristics, concomitant procedures, and indication for hysterectomy were similar for both groups.

Results. The mean time to discharge was 273.4 minutes for the backfill-assisted void trial group and 283.2 minutes for the spontaneous fill group, a difference of 9.8 minutes that was not statistically significant (P = .45).

Although it was not a primary outcome, time to spontaneous void was 24.9 minutes shorter in the backfill group (P = .04). Rates of postoperative voiding dysfunction did not differ between the 2 groups (6.7% for the backfill group and 12.8% for the spontaneous fill group; P = .2). There were no significant differences in emergency department visits, UTI rates, or readmissions.

Bladder backfill is safe, simple, and may reduce time to spontaneous void

Strengths of the study included its prospective randomized design, blinded outcome assessors, and diversity in benign gynecologic surgeries performed. Although this study found a reduced time to spontaneous void in the backfill group, it was not powered to assess this difference, limiting ability to draw conclusions from those data. Data on postoperative nausea and pain scores also were not collected, which likely influenced the overall time to discharge.

Void trial completion is one of many criteria to fulfill prior to patient discharge, and a reduced time to first void may not decrease the overall length of PACU stay if other factors, such as nausea or pain, are not controlled. Nonetheless, backfilling the bladder intraoperatively is a safe alternative that may decrease the time to first spontaneous void, and it is a relatively simple alteration in the surgical workflow that could significantly lessen PACU nursing demands.

Continue to: Algorithm assesses need for PVR, although further study required...