Switch to Abobotulinum toxin A may be useful in the treatment of neurogenic detrusor overactivity when intradetrusor injections of Onabotulinum toxin A failed.

AIMS: To assess the outcomes of switching to a different brand of botulinum toxin A (BTA, from Botox® to Dysport®) in case of failure of intradetrusor injections (IDI) of Botox® in the treatment of neurogenic detrusor overactivity (NDO). METHODS: The charts of all patients who underwent a switch to IDI of Dysport® after failure of an IDI of Botox® at six departments of neurourology were retrospectively reviewed. The main outcomes of interest were the bladder diary data and four urodynamic parameters: maximum cystometric capacity (MCC), maximum detrusor pressure (PDET max), and volume at first uninhibited detrusor contraction (UDC). RESULTS: Fifty-seven patients were included. After the first injection of Dysport®, no adverse events were reported. A significant decrease in number of urinary incontinence episodes per day was observed in 52.63% of patients (P < 0.001) and all patients experienced a reduction in PDET Max (-8.1 cmH20 on average; P = 0.003). MCC significantly increased by a mean of 41.2 (P = 0.02). The proportion of patients with no UDC increased significantly at week 6 after ATA injections (from 15.79% to 43.9%; P = 0.0002). Hence, 32 patients draw clinical and/or urodynamic benefits from the botulinum toxin switch from (56.14%). After a median follow up of 21 months, 87% of responders to BTA switch were still treated successfully with BTA. CONCLUSION: Most patients refractory to Botox® (56.14%) draw benefits from the switch to Dysport®.

Water vapor thermal therapy for indwelling urinary catheter removal in frail patients.

PURPOSE: To report the efficacy and safety of water vapor thermal therapy to achieve catheter removal in frail patients with refractory acute urinary retention. METHODS: Data from consecutive frail patients with indwelling urinary catheter undergoing the Rezum™ therapy (Boston Scientific Corporation, Marlborough, MA) at a single center between October 2017 and June 2021 were prospectively collected. The included patients were deemed unfit or at high risk of complications for conventional benign prostatic hyperplasia (BPH) surgery. Prostate volumes up to 120 mL were considered eligible. The primary endpoint was successful cessation of catheter dependency, assessed postoperatively and up to 1 year of follow-up. RESULTS: A total of 24 men met our inclusion criteria. The median age, Charlson comorbidity index, and duration of preoperative catheterization were 77 years (IQR 67-86), 6 (IQR 3-7), and 113 days (IQR 87-159), respectively. Two cases (8.3%) of postoperative complications were recorded (Clavien II and Clavien IIIa). After a median postoperative catheterization time of 21 days (IQR 11-32), all patients regained spontaneous voiding. During follow-up, two patients died and a total of 22 patients completed the 1 year follow-up. All patients maintained spontaneous voiding without recurrence of urinary retention. No surgical retreatment was performed. In terms of pharmacological management, 22/24 patients (91.7%) had a BPH medication pre-Rezum™; this decreased to 8/22 patients (36.3%) post-Rezum™ (p < 0.001). CONCLUSIONS: In this single-institution, prospective, and observational study, water vapor thermal therapy was found to be effective and safe in restoring successful spontaneous voiding in a cohort of elderly and frail patients.