Two techniques for assessing postoperative voiding function, a randomized trial

Are Formal Voiding Trials Necessary After Posterior Compartment Reconstructive Surgery?

IMPORTANCE

Posterior compartment surgery is considered a risk factor for postoperative urinary retention because of the impact of postoperative pain on the pelvic floor; however, few studies have examined the association between posterior compartment reconstructive surgery and urinary retention.

OBJECTIVE

The aim of the study was to compare rates of urinary retention in patients undergoing vaginal reconstructive surgery, without hysterectomy, in the posterior compartment only versus any apical and/or anterior compartment (with or without posterior compartment).

STUDY DESIGN

In this retrospective cohort study, we evaluated patients who underwent surgery, without hysterectomy, in the posterior compartment only versus any apical and/or anterior compartment (with or without posterior compartment) from January 2015 to November 2020. Our primary outcome was rate of postoperative urinary retention, defined as a failed voiding trial before discharge. Secondary outcome was days of catheterization. Multivariable logistic regression was performed to assess variables associated with a failed voiding trial.

RESULTS

Of 362 patients, 141 (39.0%) underwent surgery in the posterior compartment only and 221 (61.0%) underwent vaginal apical and/or anterior compartment surgical procedures. Rate of retention was significantly lower in the posterior compartment only group (9.9% vs 41.6%, P < 0.001). The median numbers of days of catheterization were significantly fewer in the posterior compartment only group (0 [0,0] vs 0 [0,3], P < 0.001). In multivariable logistic regression, posterior compartment only surgery was associated with passing the voiding trial (odds ratio, 6.0; 95% confidence interval, 2.97-12.03).

CONCLUSIONS

Rates of postoperative urinary retention after surgery in the posterior compartment are low, and these patients may not require formal voiding trials after surgery.

Is a Postvoid Residual Necessary? A Randomized Trial of Two Postoperative Voiding Protocols

OBJECTIVES

This study aimed to compare a backfill-assisted voiding trial (VT) with and without a postvoid residual (PVR) after pelvic reconstructive surgery.

METHODS

This was a nonblinded randomized controlled trial of women undergoing pelvic organ prolapse and/or stress incontinence surgery. Participants were randomized immediately after surgery to either a PVR VT or a PVR-free VT. Our primary outcome was the rate of VT failure at discharge. Secondary outcomes included days of catheterization, urinary tract infection (UTI), and prolonged voiding dysfunction. With a power of 80% and an α of 0.05, we needed 126 participants to detect a 25% difference in VT failure (60% in PVR VT vs 35% in PVR-free VT).

RESULTS

Participants were enrolled from March 2017 to October 2017. Of the 150 participants, mean age was 59 years, and 33% underwent vaginal hysterectomy, 48% underwent anterior repair, and 75% underwent midurethral sling. Seventy-five (50%) were randomized to PVR VT and 75 (50%) to PVR-free VT, with no differences in baseline demographic or intraoperative characteristics between the 2 groups. Our primary outcome, VT failure, was not significantly different (53% PVR VT vs 53% PVR-free VT, P = 1.0). There were no significant differences in days of postoperative catheterization (1 [0, 4] in PVR VT vs 1 [0, 4] in PVR-free VT, P = 0.90), UTI (20% PVR VT vs 20% PVR-free VT, P = 1.0), or postoperative voiding dysfunction (4% PVR VT vs 5% PVR-free VT, P = 1.0).

CONCLUSIONS

When performing a backfill-assisted VT, checking a PVR does not affect VT failure, postoperative duration of catheterization, UTI, or voiding dysfunction.

A Systematic Review of Randomized Trials Investigating Methods of Postoperative Void Trials Following Benign Gynecologic and Urogynecologic Surgeries

OBJECTIVE

To perform a systematic review of randomized controlled trials (RCTs) studying postoperative void trials (VTs) following gynecologic and urogynecologic surgery to investigate (1) the optimal postoperative VT methodology and (2) the optimal time after surgery to perform a VT.

DATA SOURCES

PubMed, Embase, the Cochrane Central Register of Controlled Trials, and ClinicalTrials.gov.

METHOD OF STUDY SELECTION

We systematically searched the aforementioned data sources from inception to November 22, 2019, using a combination of subject headings and keywords for the following 3 concepts: gynecologic surgery (prolapse, benign gynecologic, and incontinence surgery), postoperative period, and voiding. We identified any RCT in English that studied VT methodology or timing in patients undergoing benign gynecologic or urogynecologic surgery. Discrepancies were adjudicated by a third reviewer. We followed the standard systematic review methodology and used the Jadad scoring system to assess bias. Extracted study outcomes included the following: proportion of patients discharged home with catheter, proportion of VT failure, surgery for retention, retention after initial VT, postoperative calls and visits, time in postanesthesia care unit (PACU), time to discharge, time to spontaneous void, duration of catheterization, patient and provider burden, and urinary tract infection (UTI).

TABULATION, INTEGRATION, AND RESULTS

We double screened 618 abstracts and clinical trial descriptions, assessed 56 full-text articles, and ultimately included 21 RCTs. The evidence was of low to moderate quality overall. The studies were divided into the following 2 categories: VT methodology (10 studies) and VT timing (11 studies). VT methodology included backfill-assisted (in operating room vs PACU), autofill, and force of stream studies. One RCT compared backfill-assisted with and without postvoid residual volume check. Outcomes were similar for all VT methods, except backfill-assisted decreased time to spontaneous void compared with autofill. In the VT timing category, earlier VT performance correlated with a shorter time to discharge, time to spontaneous void, duration of catheterization, and lower patient burden and UTI rate but had a higher rate of retention after initial VT. There was no difference between earlier vs later VT timing for proportion of discharged home with catheter or rate of VT failure. No studies reported outcomes of provider burden or postoperative calls.

CONCLUSION

In comparing VT methodologies, VT by backfill-assisted (in operating room vs PACU, ± postvoid residual volume), autofill, and force of stream resulted in similar outcomes with no one method being superior. Performing VT at an earlier postoperative time point results in shorter time to discharge and spontaneous void, shorter duration of catheterization, lower patient burden, and lower UTI risk, but it may increase the risk of retention after initial VT.

Guidelines for vulvar and vaginal surgery: Enhanced Recovery After Surgery Society recommendations

This is the first collaborative Enhanced Recovery After Surgery Society guideline for optimal perioperative care for vulvar and vaginal surgeries. An Embase and PubMed database search of publications was performed. Studies on each topic within the Enhanced Recovery After Surgery vulvar and vaginal outline were selected, with emphasis on meta-analyses, randomized controlled trials, and prospective cohort studies. All studies were reviewed and graded according to the Grading of Recommendations, Assessment, Development and Evaluation system. All recommendations on the Enhanced Recovery After Surgery topics are based on the best available evidence. The level of evidence for each item is presented.

Optimal timing of a second postoperative voiding trial in women with incomplete bladder emptying after vaginal reconstructive surgery: a randomized trial

BACKGROUND

Rates of postoperative incomplete bladder emptying vary significantly after pelvic reconstructive surgery. With enhanced recovery protocols the paradigm is shifting towards same-day discharge and the rates of incomplete bladder emptying are expected to increase. The optimal length of time for postoperative catheter drainage has not been clearly established. There are no current studies that assess the optimal timing of a repeat voiding trial in women who have unsuccessful same day voiding trials.

OBJECTIVE

This study aimed to compare the outcomes of a second voiding trial performed 2-4 days (earlier group) vs 7 days (later group) postoperatively in women with incomplete bladder emptying after vaginal prolapse surgery. Secondary aims included postoperative urinary tract infection rates, total days with a catheter, and patient-reported catheter bother between groups.

STUDY DESIGN

Across 2 sites, women undergoing multicompartment vaginal repair were enrolled. Within 6 hours postoperatively, subjects had an active retrograde voiding trial. Those who passed this voiding trial exited the study; those who had persistent incomplete bladder emptying (postvoid residual >100 mL) had a transurethral indwelling catheter placed and were randomized to return for an earlier (postoperative day 2-4) vs later (postoperative day 7) follow-up office voiding trial. Subjects were followed for 6 weeks after surgery. The primary outcome was the rate of unsuccessful repeat office voiding trial. Secondary outcomes included rates of urinary tract infection, total days with a catheter, and subjective catheter bother. A power calculation based on a projected 31% difference, a power of 0.8, and an alpha of 0.05 revealed that 30 subjects were needed in each group.

RESULTS

A total of 102 subjects were enrolled; 38 exited on postoperative day 0, leaving 64 subjects for randomization (4 of whom withdrew after randomization). A comparison of data revealed that randomization was effective, with no differences between the earlier and later groups in terms of demographic data or surgical procedures. Using an intention-to-treat analysis, women in the earlier group were more likely to be unsuccessful in their follow-up office voiding trial (23.3%) than the later group (3.3%), with a risk difference of 20% (95% confidence interval, 3.56-36.44) and a relative risk of 7.00 (95% confidence interval, 0.92-53.47; P=.02). A number-needed-to-treat calculation found that for every 5 patients using a catheter for 7 days postoperatively, 1 case of persistent postoperative incomplete bladder emptying was prevented. Rates of catheter bother did not differ between groups at the time of the follow-up office voiding trial or at 6 weeks (P=.09 and P=.20, respectively). Urinary tract infection rates were higher in the earlier group but did not reach statistical significance (23% vs 7%, P=.07). Regression analysis revealed that subjects who required additional pain medication refills were 9.6 times (95% confidence interval, 1.24-73.77) more likely to have persistent incomplete bladder emptying after the follow-up office voiding trial.

CONCLUSION

Women with incomplete bladder emptying after multicompartment prolapse repair had a 7-fold higher risk of an unsuccessful repeat office voiding trial if performed within 4 days of surgery than when performed within 7 days of surgery. In addition, requiring additional prescriptions for analgesia increased the risk of an unsuccessful follow-up office voiding trial.

Catheter burden following urogynecologic surgery

BACKGROUND

Data on the experience that women who undergo urogynecologic surgery have with postoperative catheterization are severely limited. As the importance of our patients' perioperative experience becomes more valued, assessment of the burden of postoperative catheterization, which has not yet been performed, is increasingly needed.

OBJECTIVE

The aim of this study was to compare catheter burden in women who self-selected use of an indwelling Foley catheter vs clean intermittent self-catheterization for voiding dysfunction after reconstructive pelvic surgery.

STUDY DESIGN

This is a nested study within a nonblinded randomized controlled trial of 2 different voiding trial protocols that was conducted from March to October 2017. Women who underwent pelvic organ prolapse and/or stress urinary incontinence surgery who were English speaking and ≥18 years old with a preoperative postvoid residual <100 mL were included. Participants who did not pass their voiding trial were discharged with an indwelling Foley catheter or self-catheterization per participant preference. Our primary outcome was catheter burden at 1 week after surgery assessed by the Short-Term Catheter Burden Questionnaire, which is a validated 6-item survey comprised of 2 subscales: difficulty of use and embarrassment. Scores range from 3-15 with higher scores indicating greater difficulty and/or embarrassment, and the sum of the 2 subscale scores measures total catheter burden with a higher score indicating greater burden. Secondary outcomes included the rate of urinary tract infection, the number of postoperative clinic visits, and the number of postoperative phone calls.

RESULTS

Of 150 participants, 77 women (51%) did not pass their voiding trial; of those, 47 women (61%) were discharged home with an indwelling catheter and 30 women (39%) with self-catheterization. Baseline demographics were similar, except that women who chose an indwelling Foley catheter were older (62±11 vs 55±11 years; P<.01). There were no significant differences between indwelling Foley catheter and self-catheterization in total catheter burden score (18±5 vs 18±6; P=.77), difficulty of use subscale score (8±3 vs 9±3; P=.20), or embarrassment subscale score (10±4 vs 9±4; P=.12). For secondary outcomes, there were no significant differences in rate of urinary tract infection (23% indwelling vs 30% self-catheterization; P=.60). Consistent with study protocol, women who were discharged with an indwelling Foley catheter did have more postoperative clinic visits (2±1 vs 1±1 visits; P<.01), and those women who were discharged with self-catheterization had more postoperative phone calls (2±3 vs 5±3 phone calls; P<.01). Otherwise there was no significant difference in nonvoiding-related clinic visits (1±1 visits for indwelling and self-catheterization; P=.15) or postoperative phone calls (1±2 indwelling vs 2±3 self-catheterization calls; P=.31).

CONCLUSION

In women who used either an indwelling Foley catheter or clean intermittent self-catheterization for management of postoperative voiding dysfunction after pelvic reconstructive surgery, there were no differences in difficulty of use, embarrassment, or overall catheter burden. There were also no differences in nonvoiding-related postoperative phone calls or clinic visits, with similar rates of urinary tract infection between the 2 groups.