Abigail Ford

Mid‐urethral sling operations for stress urinary incontinence in women

BACKGROUNDnUrinary incontinence is a very common and debilitating problem affecting about 50% of women at some point in their lives. Stress urinary incontinence (SUI) is a predominant cause in 30% to 80% of these women imposing significant health and economic burden on society and the women affected. Mid-urethral sling (MUS) operations are a recognised minimally invasive surgical treatment for SUI. MUS involves the passage of a small strip of tape through either the retropubic or obturator space, with entry or exit points at the lower abdomen or groin, respectively. This review does not include single-incision slings.nnnOBJECTIVESnTo assess the clinical effects of mid-urethral sling (MUS) operations for the treatment of SUI, urodynamic stress incontinence (USI) or mixed urinary incontinence (MUI) in women.nnnSEARCH METHODSnWe searched: Cochrane Incontinence Specialised Register (including: CENTRAL, MEDLINE, MEDLINE In-Process, ClinicalTrials.gov) (searched 26 June 2014); Embase Classic (January 1947 to Week 25 2014); WHO ICTRP (searched 30 June 2014); reference lists.nnnSELECTION CRITERIAnRandomised or quasi-randomised controlled trials amongst women with SUI, USI or MUI, in which both trial arms involve a MUS operation.nnnDATA COLLECTION AND ANALYSISnTwo review authors independently assessed the methodological quality of potentially eligible studies and extracted data from included trials.nnnMAIN RESULTSnWe included 81 trials that evaluated 12,113 women. We assessed the quality of evidence for outcomes using the GRADE assessment tool; the quality of most outcomes was moderate, mainly due to risk of bias or imprecision.Fifty-five trials with data contributed by 8652 women compared the use of the transobturator route (TOR) and retropubic route (RPR). There is moderate quality evidence that in the short term (up to one year) the rate of subjective cure of TOR and RPR are similar (RR 0.98, 95% CI 0.96 to 1.00; 36 trials, 5514 women; moderate quality evidence) ranging from 62% to 98% in the TOR group, and from 71% to 97% in the RPR group. Short-term objective cure was similar in the TOR and RPR groups (RR 0.98, 95% CI 0.96 to 1.00; 40 trials, 6145 women). Fewer trials reported medium-term (one to five years) and longer-term (over five years) data, but subjective cure was similar between the groups (RR 0.97, 95% CI 0.87 to 1.09; 5 trials, 683 women; low quality evidence; and RR 0.95, 95% CI 0.80 to 1.12; 4 trials, 714 women; moderate quality evidence, respectively). In the long term, subjective cure rates ranged from 43% to 92% in the TOR group, and from 51% to 88% in the RPR group.MUS procedures performed using the RPR had higher morbidity when compared to TOR, though the overall rate of adverse events remained low. The rate of bladder perforation was lower after TOR (0.6% versus 4.5%; RR 0.13, 95% CI 0.08 to 0.20; 40 trials, 6372 women; moderate quality evidence). Major vascular/visceral injury, mean operating time, operative blood loss and length of hospital stay were lower with TOR.Postoperative voiding dysfunction was less frequent following TOR (RR 0.53, 95% CI 0.43 to 0.65; 37 trials, 6200 women; moderate quality evidence). Overall rates of groin pain were higher in the TOR group (6.4% versus 1.3%; RR 4.12, 95% CI 2.71 to 6.27; 18 trials, 3221 women; moderate quality evidence) whereas suprapubic pain was lower in the TOR group (0.8% versus 2.9%; RR 0.29, 95% CI 0.11 to 0.78); both being of short duration. The overall rate of vaginal tape erosion/exposure/extrusion was low in both groups: 24/1000 instances with TOR compared with 21/1000 for RPR (RR 1.13, 95% CI 0.78 to 1.65; 31 trials, 4743 women; moderate quality evidence). There were only limited data to inform the need for repeat incontinence surgery in the long term, but it was more likely in the TOR group than in the RPR group (RR 8.79, 95% CI 3.36 to 23.00; 4 trials, 695 women; low quality evidence).A retropubic bottom-to-top route was more effective than top-to-bottom route for subjective cure (RR 1.10, 95% CI 1.01 to 1.19; 3 trials, 477 women; moderate quality evidence). It incurred significantly less voiding dysfunction, and led to fewer bladder perforations and vaginal tape erosions.Short-and medium-term subjective cure rates between transobturator tapes passed using a medial-to-lateral as opposed to a lateral-to-medial approach were similar (RR 1.00, 95% CI 0.96 to 1.06; 6 trials, 759 women; moderate quality evidence, and RR 1.06, 95% CI 0.91 to 1.23; 2 trials, 235 women; moderate quality evidence). There was moderate quality evidence that voiding dysfunction was more frequent in the medial-to-lateral group (RR 1.74, 95% CI 1.06 to 2.88; 8 trials, 1121 women; moderate quality evidence), but vaginal perforation was less frequent in the medial-to-lateral route (RR 0.25, 95% CI 0.12 to 0.53; 3 trials, 541 women). Due to the very low quality of the evidence, it is unclear whether the lower rates of vaginal epithelial perforation affected vaginal tape erosion (RR 0.42, 95% CI 0.16 to 1.09; 7 trials, 1087 women; very low quality evidence).nnnAUTHORS CONCLUSIONSnMid-urethral sling operations have been the most extensively researched surgical treatment for stress urinary incontinence (SUI) in women and have a good safety profile. Irrespective of the routes traversed, they are highly effective in the short and medium term, and accruing evidence demonstrates their effectiveness in the long term. This review illustrates their positive impact on improving the quality of life of women with SUI. However, a brief economic commentary (BEC) identified three studies suggesting that transobturator may be more cost-effective compared with retropubic. Fewer adverse events occur with employment of a transobturator approach with the exception of groin pain. When comparing transobturator techniques of a medial-to-lateral versus a lateral-to-medial insertion, there is no evidence to support the use of one approach over the other. However, a bottom-to-top route was more effective than top-to-bottom route for retropubic tapes.A salient point illustrated throughout this review is the need for reporting of longer-term outcome data from the numerous existing trials. This would substantially increase the evidence base and provide clarification regarding uncertainties about long-term effectiveness and adverse event profile.

Retropubic or transobturator mid-urethral slings for intrinsic sphincter deficiency-related stress urinary incontinence in women: a systematic review and meta-analysis

Introduction and hypothesisStress urinary incontinence is a common problem affecting 12-46xa0% of women. A cohort of women have a more severe form of stress urinary incontinence usually due to intrinsic urethral sphincter deficiency that has traditionally resulted in lower success rates with standard treatment modalities. We aim to address the question of whether transobturator sling insertion is more effective than retropubic sling insertion in the treatment of intrinsic sphincter deficiency-related stress urinary incontinence in women.MethodsWe searched MEDLINE, CINAHL, CENTRAL, journals, and major conferences (up to 30 June 2014). All randomised controlled trials in women with stress urinary incontinence or mixed urinary incontinence with associated intrinsic sphincter deficiency who underwent a retropubic or transobturator mid-urethral sling operation were included in this meta-analysis. The Cochrane risk of bias tool and the GRADE system were used to assess the quality of evidence.ResultsFifty-five randomised controlled trials compared transobturator and retropubic mid-urethral slings. Twelve trials included women with intrinsic sphincter deficiency, but only 8 trials (399 women) reported data specifically for this cohort. There was a statistically significant difference in short- and medium-term (≤5xa0years) subjective cure rates, with the number of women reporting a cure in the transobturator group at 150 out of 199 and the retropubic group at 171 out of 200. This gives a 12xa0% relative risk reduction in achieving cure with the transobturator route (RR 0.88, 95xa0% CI 0.80 to 0.96, I2u2009=u20090xa0%, moderate quality evidence [GRADE]). Objective cure was reported by five trials of 324 women and showed no statistically significant difference between the two groups, with a rate of 110 out of 159 in the transobturator group and 126 out of 165 in the retropubic group (RR 0.90, 95xa0% CI 0.79 to 1.03). Post-operative voiding dysfunction and de novo urgency or urgency urinary incontinence in the two treatment groups showed no significant difference. The need to undergo repeat incontinence surgery in the long term (≥5xa0years) was higher with the transobturator route (RR 14.4, 95xa0% CI 1.95 to 106, 147 women).ConclusionsMid-urethral slings are effective in treating women with intrinsic sphincter deficiency-associated stress urinary incontinence. The retropubic route resulted in higher subjective cure rates compared with transobturator routes. Both routes improved the overall quality of life.

Is the microbiome influencing patient care in lower urinary tract dysfunction? Report from the ICI-RS 2017

This report sets out to consider the role of the microbiome within the bladder to provide clinicians with knowledge on this specific area of research and recommend potential topics for further studies.

Does assessing urethral function allow the selection of the optimal therapy for recurrent SUI? Report from the ICI-RS 2017

The management of recurrent stress urinary incontinence following failed previous continence surgery remains challenging. Whilst the role of urodynamic investigations has been questioned in the management of primary stress incontinence there is a widely held view that women with recurrent symptoms require further investigation although there is no agreement regarding which tests are required. We sought to understand what testing is recommended prior to managing this difficult cohort of patients.

Current controversies in urinary tract infections: ICI-RS 2017

The current definition of urinary tract infection (UTI) relies on laboratory and clinical findings, which may or may not be relevant, depending upon the patient group under consideration. This report considers the utility of current definitions for UTI in adults with and without underlying neurological conditions in order to identify gaps in current understanding and to recommend directions for research.