Abstract: Objective To investigate the efficacy and safety of biofeedback combined with electrical stimulation (BES) for continuous urinary incontinence in the elderly patients received radical prostatectomy (RP). Methods A total of 82 elderly patients undergoing RP who suffered from continuous urinary incontinence from October 2020 to December 2023 were enrolled in this study from Department of Urology,Affiliated Hospital of Jiangnan University. All the patients received two courses of BES therapy (30 minutes session every other day, 15 sessions per course). The muscle strength of pelvic floor muscle, as well as the electromyographic values of abdominal muscle and pelvic floor muscle, were detected before the first time treatment and the final treatment, and the International Consultation on Incontinence Questionnaire Short Form (ICIQ-SF) was used to evaluate the severity of urinary incontinence before and after treatment. Results All the patients successfully completed two courses of treatment, with a significant increase in the muscle strength of pelvic floor muscle during all the stages of muscle movement, including fast muscle stage, pre-resting stage, post-resting stage, slow muscle stage and endurance stage (P<0.05). The level of the electromyographic values of abdominal muscle after the BES treatment were decreased in the fast muscle stage, slow muscle stage and endurance stage (P<0.05), while the electromyographic values of pelvic floor muscle were increased after treatment (P<0.05). The ICIQ-SF score decreased significantly after treatment in all the patients with different age or urinary incontinence severity(P<0.05). Conclusions The application of BES treatment in the elderly patients with continuous urinary incontinence due to RP is safe and effective. It can enhance the pelvic floor muscle strength and alleviate the urinary incontinence symptoms.

Key words: radical prostatectomy, urinary incontinence, biofeedback, electrical stimulation