Effects of the Single Administration of the Anticholonergics, Trospium Chloride, on the Patients with Nocturia.

Purpose: The aim of this study was to evaluate the effects of the single administration of the anticholonergics, trospium chloride, in the nocturic patients without bladder outlet obstruction for mid-term. Materials and Methods: We included the 22 male and 102 female patients with nocturia over 3 times and without bladder outlet obstruction. Exclusion criteria was under 15 ml/sec in maximal flow rate, over 30 ml in post-void residual urine, nocturnal polyuria and medication affecting lower urinary tract symptoms including alpha-blockers, sedatives, muscle relaxants. Based on voiding diary for 3 days, frequency of the nocturia, daytime frequency and frequency of the urgency and urge incontinence were measured at pretreatment, post-treatment 1st month, 3rd month and 6th month. Additionally maximal flow rate and post-void residual urine were also recorded at the same periods. Anticholinergics was administered in flexible dose. Results: In frequency of nocturia, single administration of the anticholonergics improved significantly at post-treatment 1st, 3rd and 6th month compared to pre-treatment level. The more severe the frequency of the nocturia was, the more it was improved by medication but there is no significant difference. Daytime frequency is significantly improved 3 month and 6 month after medication. In urgency and urge incontinence, the significant improvement was also observed at post-treatment 3rd month and 6th month. The significant differences between pre-treatment and post-treatment were not demonstrated in maximal flow rate and post-void residual urine. Dry mouth was the most common side effect but mild and tolerable. Conclusion: The single administration of the trospium chloride demonstrated a clinically significant improvement in nocturia as well as symptoms of the overactive bladder and did not affect negatively on bladder contractility. (J. Korean Continence Society 2005;9:75-81)