The effect of desmopressin on short-term memory in children with primary nocturnal enuresis
Muller D, Florkowski H,
Chavez-Kattau K, Carlsson G, Eggert P.
Children's Hospital,
University of Kiel, Kiel, Germany.
J Urol 2001 Dec;166(6):2432-4


PURPOSE: The use of desmopressin in patients with primary nocturnal enuresis is based on the hypothesis of a nocturnal lack of endogenous arginine vasopressin. However, in addition to the kidney, other targets of desmopressin are known. Therefore, we examined whether the administration of desmopressin influences central nervous function in children with primary nocturnal enuresis. MATERIALS AND METHODS: Our prospective, randomized, double-blind, placebo controlled cross-over study was performed on 40 children with nocturnal enuresis. Patients were randomly assigned to receive either 20 microg. desmopressin intranasally or 0.9% saline solution. Each group comprised 19 and 21 to children, respectively. After 2 weeks the groups were switched. The children were tested for short-term memory and reaction time to both treatments. Statistical analysis was done using the Wilcoxon matched pairs test. RESULTS: Median patient age was 8.0 years (range 6 to 13). During desmopressin treatment children in both groups had a significant decrease of wet nights (5.3 to 3.2 per week). In contrast to reaction time, short-term memory was significantly different between both groups (p <0.05). CONCLUSIONS: Our results demonstrate an increase in short-term memory after desmopressin treatment in children with nocturnal enuresis. This finding indicates the central nervous system as a target involved in the pathogenesis of nocturnal enuresis as well as the therapeutic benefit of desmopressin treatment.

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