Do features of randomized controlled trials of pelvic floor muscle training for postprostatectomy urinary incontinence differentiate successful from unsuccessful patient outcomes? A systematic review with a series of meta-analyses

Effect of pelvic floor muscle training on urinary incontinence after radical prostatectomy: An umbrella review of meta-analysis and systematic review

OBJECTIVE

To analyse the specific exercise effects of pelvic floor muscle training (PFMT) with or without biofeedback or electrical stimulation on urinary incontinence rehabilitation after radical prostatectomy.

DATA SOURCES

We searched PubMed, Embase, Cochrane Database of Systematic Reviews, Web of Science and Scopus databases for systematic reviews and meta-analyses on PFMT for urinary incontinence after radical prostatectomy from inception to 3 October 2022.

REVIEW METHODS

Two authors independently extracted key data from the included studies. The methodological quality of the included studies was assessed using the A Measure Tool to Assess Systematic Reviews-2 checklist. Grading of Recommendations Assessment Development and Evaluation was used to evaluate the quality of the outcomes.

RESULTS

A total of 18 studies with 29,925 patients were included, all of which were of critically low methodological quality. Biofeedback therapy seemed to show additional benefits compared to PFMT alone; however, the adjunctive role of electrical stimulation remained more controversial due to the lack of strong evidence. Preoperative PFMT sometimes, but not always, showed the potential to improve urinary incontinence. PFMT with the guidance of a therapist could bring some benefits to the patient and was more acceptable to the patient, but consumed some medical resources.

CONCLUSIONS

PFMT has a good effect on improving post-radical prostatectomy incontinence in men, and biofeedback can have an additional beneficial effect on patients, especially in the short-term and medium-term. However, there is insufficient evidence to suggest that electrical stimulation is beneficial for patients with urinary incontinence.

Contribution of Retzius-sparing robot-assisted radical prostatectomy to the mechanism of urinary continence as demonstrated by dynamic MRI

Retzius-sparing robot-assisted radical prostatectomy (RARP) has been reported to exhibit better postoperative urinary continence, but the reasons behind this are unknown. This study included 254 cases who underwent RARP and underwent postoperative dynamic MRI. We measured the urine loss ratio (ULR) immediately after postoperative urethral catheter removal and investigated its affecting factors and the mechanisms. Nerve-sparing (NS) techniques was performed in 175 (69%) unilateral and 34 (13%) bilateral cases, whereas Retzius-sparing in 58 (23%) cases. The median ULR early after indwelling catheter removal in all patients was 4.0%. The multivariate analysis was performed on factors that reduce ULR and found that the following factors were associated with ULR: younger age, NS and Retzius-sparing, which were significant. Additionally, dynamic MRI findings showed that membranous urethral length and the anterior rectal wall movement toward the pubic bone during abdominal pressure were significant factors. The movement observed on the dynamic MRI during abdominal pressure was thought to reflect an effective urethral sphincter closure mechanism. Long membranous urethral length and an effective urethral sphincter closure mechanism during abdominal pressure were considered effective for favorable urinary continence after RARP. NS and Retzius-sparing were clearly shown to have an additive effect in preventing urinary incontinence.

A mobile app as support for pelvic floor muscle training started prior to radical prostatectomy

Objective

To evaluate the usefulness of a mobile app to support pelvic floor muscle training (PFMT) started prior to radical prostatectomy (RP).

Materials and methods

A prospective cohort study conducted in Sweden from June 2018 to February 2021 including men for whom RP was planned within 12 months. Users responded anonymously to questionnaires at baseline, 1 and 3 months. Our primary aim was to evaluate if the app could facilitate PFMT and increase confidence in performing pelvic floor muscle (PFM) contractions correctly. Our second aim was to describe the change in urinary incontinence (UI) after RP, based on the International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF).

Results

Of the 3043 users at baseline, 388 met the primary inclusion criteria. Of those, 71 (18.3%) were incontinent, predominantly with slight symptoms. The most common type was urge UI, 39/71 (54.9%). Of the 388 users, 159 (41.0%) answered the questionnaire at 1 month, and 131 (33.7%) at 3 months within 89-135 days. Of those 131, 127 (96.9%) indicated that the app facilitated their training 'a lot' or 'somewhat'. Confidence in performing PFM contractions correctly increased from 39.7% at baseline to 74.0% at 1 month and 87.8% at 3 months (p < 0.001). At baseline, 19.8% performed PFM contractions at least daily, which increased to 74.0% at 1 month and 77.9% at 3 months (p < 0.001). At 3 months, 115/131 (87.8%) had undergone RP, 93.6% of which were robot-assisted. Of the 115, 103 (89.6%) were incontinent, and stress UI dominated. The mean ICIQ-UI SF score increased from 1.2 (2.4 SD) at baseline to 9.6 (5.2 SD), p < 0.001, after surgery.

Conclusions

The mobile app facilitated pelvic floor muscle training for men who were planned to undergo radical prostatectomy and used the app.

Cognitive Ability as a Non-modifiable Risk Factor for Post-prostatectomy Urinary Incontinence: A Double-Blinded, Prospective, Single-Center Trial

Introduction: Urinary incontinence (UI) is a wide-spread and feared side-effect of conventional or even robot-assisted laparoscopic prostatectomy (RALP) due to its high impact on patients' quality of life (QoL). Non-modifiable risk factors for UI have already been identified - on surgical and patient side. Yet, to our knowledge, focus thus far has not been placed on functional aspects regarding general cognitive ability. Materials and Methods: This is an observational single-center, prospective, double-blinded evaluation of 109 RALPs performed between 07/2020 and 03/2021. All patients underwent a Mini Mental State Examination (MMSE) prior to surgery to evaluate their cognitive ability. Early post-prostatectomy incontinence (PPI) was evaluated using a standardized 1 h pad test performed 24 h after removal of the urinary catheter. The association between MMSE results and PPI were evaluated using univariate and multivariate logistic regression models. Results: Multivariate logistic regression analyses identified MMSE results and nerve sparing (NS) as independent predictors for PPI in patients with an intermediate MMSE result (25-27 points) having a 3.17 times higher risk of PPI when compared to patients with a good MMSE result (≥28) (95% Confidence Interval (CI): 1.22-9.06, p = 0.023), while patients without NS had a 3.53 times higher risk of PPI when compared to patients with NS (95% CI: 1.54-11.09, p = 0.006). Conclusion: A lower cognitive ability should be treated as a non-modifiable risk-factor for early PPI. In the future it could find its place as a clinical screening tool to identify patients who require more attention especially in the pre-, but also in the postoperative phase.

The repeatability of measurements of male pelvic floor anatomy and function made from transperineal ultrasound images of healthy men and those before and after prostatectomy

AIMS

To investigate the inter- and intratester repeatability of measurement of the location and displacement of five pelvic landmarks related to pelvic floor muscles with transperineal ultrasound (TPUS) imaging recorded from healthy men and men before and after prostatectomy.

METHODS

TPUS images were selected from four different participant groups: healthy men, men awaiting prostatectomy, men 2 weeks after prostatectomy, and men 12 months after prostatectomy. On two separate occasions, two assessors with different levels of experience performed analysis of location and displacement of five pelvic landmarks in images made at rest and during voluntary contraction. A two-way mixed effects, single measurement, absolute agreement intraclass correlation coefficient (ICC) was used to investigate the repeatability.

RESULTS

Intertester reliability of all locations at rest for all groups was excellent (ICCs > 0.8) except for the craniocaudal coordinate of the ventral urethrovesical junction for men 2 weeks postprostatectomy and the anorectal junction for men with a cancerous prostate. Intertester reliability of the measurement of landmark displacement was acceptable (>0.5) for the dorsoventral axis of motion but not for the craniocaudal axis of motion for all landmarks across all groups. The more experienced assessor was consistently more repeatable. More deeply placed landmarks were more often excluded from analysis and had poorer reliability.

CONCLUSIONS

Analysis of TPUS images across clinical groups is repeatable for both location and displacement of pelvic landmarks related to pelvic floor muscles when measures are made twice. Analysis experience, landmark depth and optimization of ultrasound settings appear to be important factors in reliability.

Preoperative exercise interventions to optimize continence outcomes following radical prostatectomy

Urinary incontinence is a common and predictable consequence among men with localized prostate cancer who have undergone radical prostatectomy. Despite advances in the surgical technique, urinary continence recovery time remains variable. A range of surgical and patient-related risk factors contributing to urinary incontinence after radical prostatectomy have been described, including age, BMI, membranous urethral length and urethral sphincter insufficiency. Physical activity interventions incorporating aerobic exercise, resistance training and pelvic floor muscle training programmes can positively influence the return to continence in men after radical prostatectomy. Traditional approaches to improving urinary continence after radical prostatectomy have typically focused on interventions delivered during the postoperative period (rehabilitation). However, the limited efficacy of these postoperative approaches has led to a shift from the traditional reactive model of care to more comprehensive interventions incorporating exercise-based programmes that begin in the preoperative period (prehabilitation) and continue after surgery. Comprehensive prehabilitation interventions include appropriately prescribed aerobic exercise, resistance training and specific pelvic floor muscle instruction and exercise training programmes. Transperineal ultrasonography is a non-invasive and validated method for the visualization of the action of the pelvic floor musculature, providing real-time visual biofeedback to the patient during specific pelvic floor muscle instruction and training. Importantly, the waiting time before surgery can be used for the delivery of comprehensive prehabilitation exercise-based interventions to increase patient preparedness in the lead-up to surgery and optimize continence and health-related quality-of-life outcomes following radical prostatectomy.

How to Prevent and Manage Post-Prostatectomy Incontinence: A Review

PURPOSE

To provide an overview of the currently available evidence relating to the prevention and management strategies of urinary incontinence (UI) after radical prostatectomy (RP).

MATERIALS AND METHODS

A comprehensive research was carried out on MEDLINE/PubMed database to identify pertinent studies concerning post-RP UI. The search strategy included these words: urinary continence; urinary continence recovery; urinary incontinence; radical prostatectomy; and prostate cancer.

RESULTS

Post-RP UI still represents a challenging issue for both urologic patients and clinicians. A complete preoperative assessment of the risk factors associated with post-RP UI aids both in counseling those patients with a higher estimated likelihood of postoperative UI and in identifying those who would probably benefit from preventive strategies in the preoperative and in the intraoperative settings. Over the last decades different surgical strategies based on either the "preservation" or the "reconstruction" of the anatomical elements responsible for urinary continence (UC) led to an overall improvement of postoperative functional outcomes. Finally, several therapeutic strategies should be evaluated for the postoperative UI management. Artificial urinary sphincter implantation represents the gold standard for treatment, notwithstanding its wide adoption is limited due to high costs and significant risk of surgical revision. In this context, male sling positioning seems the most promising strategy, in particular in mild and moderate post-RP UI.

CONCLUSIONS

To enhance the likelihood of obtaining an optimal UC recovery after RP, it is here strongly suggested to intervene throughout the overall clinical management process thus including the pre-, intra- and postoperative settings.

Pelvic Floor Muscle Training in Radical Prostatectomy and Recent Understanding of the Male Continence Mechanism: A Review

OBJECTIVE

Pelvic floor muscle training (PFMT) is recommended as part of supportive care for patients with prostate cancer. It can assist in reducing treatment-related symptoms such as urinary incontinence. This literature review aims to discuss recent innovative findings on the pathophysiology of the male continence mechanism and implications for PFMT in radical prostatectomy.

DATA SOURCES

CINAHL, Embase, Web of Science, Emcare and PsycINFO were searched until January 2020.

CONCLUSION

Nurses providing supportive care for patients undergoing radical prostatectomy can engage in-clinic in the instruction and recommendation of pre- and postoperative PFMT and delivering guidance on home-based programs to promote motor learning.

IMPLICATIONS FOR NURSING PRACTICE

Optimal postoperative urinary incontinence outcomes are suggested to be promoted by preoperative PFMT. Training focused on the urethral and anterior pelvic floor muscle complex has been shown to facilitate mid urethral occlusion required for continence. Prescription of PFMT should be individualised, focusing on skill acquisition and motor learning, which is in line with recent knowledge developments in male pelvic floor anatomy.