Transcutaneous tibial nerve stimulation in patients with multiple sclerosis and overactive bladder: a real-life clinical and urodynamic assessment.

AIMS: The aims of the present study were to assess the effectiveness of transcutaneous tibial nerve stimulation (TTNS) on overactive bladder (OAB) symptoms and on urodynamic parameters in patients with multiple sclerosis (PwMS) and to seek predictive factors of satisfaction. METHODS: All PwMS who performed 12-24 weeks of TTNS and who underwent urodynamic assessment before and after treatment between June 2020 and October 2022 were included retrospectively. Data collected were bladder diaries, symptoms assessed with Urinary Symptoms Profile (USP), and urodynamic parameters (bladder sensations, detrusor overactivity, and voiding phase). Patients with improvement rated as very good or good on Patient Global Impression of Improvement (PGI-I) score were considered as responders. RESULTS: Eighty-two patients were included (mean age: 47.1 ± 11.5 years, 67 (82%) were women). The mean USP OAB sub-score decreased from 7.7 ± 3.5 to 6.0 ± 3.4 (p < 0.0001). On bladder diaries, voided volumes, void frequency, and the proportion of micturition done at urgent need to void significantly improved with TTNS (p < 0.05). No significant change was found in urodynamic parameters. According to the PGI-I, 34 (42.5%) patients were good responders. The only parameter associated with higher satisfaction was the percentage of micturition done at urgent need to void before the initiation of the treatment (39.8% ± 30.5 in the responder group vs 25.1% ± 25.6 in the low/no responder group; p = 0.04). CONCLUSION: TTNS improves OAB symptoms in PwMS, without significant changes on urodynamics. A high rate of strong or urgent need to void in daily life was associated with higher satisfaction.

Primary bladder neck obstruction in men: The importance of urodynamic assessment and cystourethrography in measuring its severity.

OBJECTIVE: Primary bladder neck obstruction (PBNO) is a condition primarily affecting young men, characterized by obstruction at the bladder neck, leading to lower urinary tract symptoms. The aim of this study was to identify a correlation between the severity of bladder neck opening impairment and urinary symptoms by means of urodynamic studies. MATERIALS AND METHODS: A retrospective analysis was conducted in adult males diagnosed with PBNO at a university neurourology department between 2015 and 2022 who underwent voiding cystourethrography (VCUG) and pressure-flow studies. The cohort was divided into two groups: absence of bladder neck opening on VCUG (Group A) and incomplete bladder neck opening (Group B). RESULTS: Out of the 82 patients with PBNO screened, 53 were included in the analysis. Nocturia was the only symptom more prevalent in Group A (65% in Group A vs. 30% in Group B, p = 0.02) but scores and subscores of the Urinary Symptom Profile questionnaire were not different between groups. In addition, the detrusor pressure at a maximum flow rate (PdetQmax), bladder outlet obstruction index (BOOI), and bladder contractility index (BCI) were higher in Group A than in Group B [PdetQmax (A = 93.7 ± 53.7 cmH2O vs. B = 65.7 ± 26.4 cmH2O; p = 0.01)-BOOI (A = 77 ± 58.3 vs. B = 48 ± 25.7; p = 0.03)-BCI (A = 136 ± 51.3 vs. B = 110 ± 41.7; p = 0.04)]. CONCLUSION: This study demonstrates a significant association between the extent of bladder neck opening impairment observed on VCUG and obstruction and contraction urodynamic parameters, but no association with the severity of urinary symptoms. Future studies should evaluate the predictive value of treatment response and the occurrence of complications based on clinical and urodynamic parameters.