[Tolerability, persistence and satisfaction. Retrospective cohort study in patients with overactive bladder syndrome treated with transdermal Oxybutynin under Standard ClinicAl pRactice. OSCAR Study.].

Objectives: To determine the tolerability, persistenceand satisfaction of patients with overactive bladder syndrome (OAB) treated with transdermal oxybutynin (OXY-TDS).

Methods: Observational, retrospective, multicenter study, in patients with OAB who had started treatment with OXY-TDS at least 12 months before their inclusion. Tolerability was evaluated by number, severity criteria, resolution type of adverse reactions, and cognitive function with Mini-Mental State Examination (MMSE), at 1 year of treatment. The patients who remained under treatment during the observation period were considered persistent. Patient satisfaction was evaluated using an ad hoc questionnaire.

Results: The clinical history of 105 patients was evaluated. 92.4% were women. The mean age of all the patients was 59.4 ± 11.8 years. After 12 months of treatment, dry mouth was present in 5.7% of patients and 27.6% had mild or moderate adverse reactions in the area of application. The persistence in treatment was 55.2%. The use of the OXY-TDS was considered comfortable or very comfortable by 92.9% of patients.

Conclusions: The study performed in patients with OAB shows that OXY-TDS provides low incidence of systemic adverse effects, including dry mouth, high persistence, improved adherence rates and high satisfaction of patients after one year of treatment.