Prise en charge d’une incontinence urinaire masculine après prostatectomie radicale (CTMH AFU 2006 – 5/5)

Effect of radical prostatectomy on involuntary pelvic floor muscle contraction

AIMS

Radical prostatectomy may cause stress urinary incontinence (SUI). We compared continent and incontinent men after radical prostatectomy, in regard to the change of the temporal pattern of pelvic floor activation during cough.

METHODS

Twenty-two patients were included in this prospective, multicentric study. All patients gave their informed consent. Simultaneous recordings of electromyographic activity of external anal sphincter (EAS EMG) and external intercostal muscle (EIC EMG) during cough were performed with a pair of pregelled surface electrodes. Cough effort caused an involuntary pelvic contraction. Intercostal muscles recording was chosen because they are one of the muscular components of cough initiation with diaphragm muscle. Twenty-four-hour pad-weighing test was used to quantify urinary incontinence. The primary endpoint was the latency between the onset of EIC EMG and EAS EMG (RT3), during a cough effort. We also measured the contraction time, the maximum EAS EMG activity, and the area under the curve.

RESULTS

All the patients were analyzed: 12 continent and 10 with SUI. The median age was 66 years old. Both groups were similar except in term of follow-up. Median latency was increased by -1.7 ms (-47.9; +34.2) to 55.8 ms (+47.5; +80) in patients with SUI (P = 0.0033; Table 2). The duration of the contraction, the maximum EAS EMG activity and the area under the curve were not different.

CONCLUSIONS

The latency between the onset of EIC EMG and EAS EMG is increased in patients with SUI after radical prostatectomy. It may be one of the reasons for SUI in these patients.

[Initial experience combinating transobturator male sling and penile implant after radical prostatectomy]

PURPOSE

Stress urinary incontinence (SUI) and erectile dysfunction (ED) are two major complications following radical prostatectomy (RP). In case of failure of medical treatment, Advance™ retrourethral male sling and penile implant are validated options to manage respectively SUI and ED. Our goal was to assess the feasibility and results of the combination of these two devices.

PATIENTS AND METHODS

Four patients were treated for SUI and DE following RP in our institution by retrourethral sling and penile prosthesis, after failure of medical management. Each patient was preoperatively evaluated by age, complete medical history, ASA score, endoscopy, pad-test, and urodynamics. The first two patients were implanted with the two devices in a two-stage procedure: retrourethral sling then penile prosthesis for one, and penile prosthesis then retrourethral sling for the other. The two other patients underwent a one-stage procedure: one received the two devices, and the other had retrourethral sling implantation and replacement of a penile prosthesis. Post-operative follow-up was focused on complications and efficacy (evaluated by pad use and PGI-I questionnaire for continence, and patient auto-evaluation for sexual function).

RESULTS

No perioperative complication occurred. After a minimum of 6 months follow-up, all the four patients were pad-free with no leakage reported, feeling very much better after the procedure according to the PGI-I. The four patients were fully satisfied of the penile implant device.

CONCLUSIONS

According to our initial experience, surgery combining the transobturator Advance male sling and a penile prosthesis is feasible, successively or simultaneously, and leads to excellent functional results with no complications.