Desmopressin response in nocturnal enuresis without nocturnal polyuria in Japanese children.

2021 
Objectives To evaluate whether the efficacy of desmopressin differs between patients with and without nocturnal polyuria. Methods A total of 65 treatment-naive children with monosymptomatic nocturnal enuresis were enrolled (45 boys; median age 8.9 years). Patients received desmopressin as their first-line treatment. Four different standards were used (Akashi and Hoashi >0.9 mL/kg/sleeping hour; Hamano >[age + 2] × 25 × 130% mL; the International Children's Continence Society >[age + 1] × 30 × 130% mL; and Rittig >[age + 9] × 20 mL) to assess nocturnal polyuria. The effectiveness of desmopressin was compared between patients with and without nocturnal polyuria according to each standard. A response was defined as a reduction in wet nights of >50%. Results The desmopressin treatment efficacy rate was 54% for polyuria and 67% for non-polyuria patients (P = 0.20), 45% for polyuria and 68% for non-polyuria patients (P = 0.08), 54% for polyuria and 59% for non-polyuria patients (P = 0.80), and 52% for polyuria and 61% for non-polyuria patients (P = 0.61), for the Akashi and Hoashi's, Hamano's, International Children's Continence Society and Rittig's standards, respectively. Conclusions No difference was observed in the short-term clinical efficacy of desmopressin regardless of the presence of nocturnal polyuria. Thus, this might be a feasible treatment option for patients with nocturnal enuresis without nocturnal polyuria.
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