Abstract
BACKGROUND Overactive bladder (OAB) is a chronic, age-related disorder seen in 11 % of patients. Symptoms consist of urinary urgency, with or without urinary incontinence, usually with frequency or nocturia. The objective of the present study was to compare the efficacy and side effects of mirabegron and solifenacin as primary therapies in patients with overactive bladder. METHODS This was a prospective interventional study. 100 patients aged between 18 years and 50 years with overactive bladder were included and were assigned into two treatment groups of solifenacin 5 mg or mirabegron 50 mg. They were asked to record the number of micturitions in a day, urgency episodes, incontinence episodes and volume of each micturition. All patients went through a basic workup with blood sugar to rule out diabetes, USG KUB to rule out bladder stones, and urine culture and sensitivity to rule out urinary tract infection (UTI). RESULTS 100 patients with OAB were selected for the study and divided into equal groups, 50 receiving 5 mg solifenacin and 50 receiving 50 mg mirabegron. Both groups increased the mean micturition volume but mirabegron was more effective in increasing the mean micturition in patients with OAB. Both drugs were well tolerated. There was a significant increase in mean micturition volume in mirabegron 50 mg group (by 20.7 + / - 2.2 mL), P < 0.001 whereas in solifenacin group micturition volume was increased to 22.2 + / -0.97 ml). The most common side-effect in the mirabegron group was hypertension and the most common side effect in the solifenacin group was dry mouth. CONCLUSIONS Both mirabegron and solifenacin were effective in controlling the frequency of micturition, decreasing urgency and incontinence episodes and increasing the mean volume of micturition. Mirabegron was more effective than solifenacin in controlling urgency and incontinence episodes and increasing the mean volume of micturition. KEY WORDS Overactive Bladder (OAB), Micturition, Mirabegron, Solifenacin.
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