目的　观察遗尿报警器治疗小于年龄相应膀胱容量而无夜尿增多的单一症状遗尿症(MNE)的疗效。方法　15例诊断为小于年龄相应膀胱容量而无夜尿增多的MNE患儿应用遗尿报警器治疗，并辅以睡前2 h限制饮水等基础治疗，每月复诊随访。以初次持续治疗2~3个月，连续14个夜晚无遗尿为治疗成功；停止治疗后又出现2周内遗尿≥2次为复发，并再次应用遗尿报警器治疗和随访。结果　患儿男9例、女6例，平均年龄(9.76±4.24)岁(6~15岁)。第1个疗程结束时，13例治疗成功，2例因家庭配合度不佳，改用去氨加压素治疗。随访期内，5例复发，再次应用遗尿报警器治疗，4例治疗成功并未再复发，另1例治疗失败。总治愈率80%。结论　遗尿报警器治疗小于年龄相应膀胱容量而无夜尿增多MNE有效。

Objective　To investigate the efficacy of alarm treatment in a sample of China monosymptomatic nocturnal enuresis (MNE) children and adolescents with smaller than expected bladder capacity (EBC) for age. Methods  Fifteen MNE patients with a smaller than age-expected BC and without nocturia were included. All the patients were treated with enuretic alarm and water restriction 2 hours before sleep. All patients were followed up monthly. A success criterion was defined as “14 consecutive dry nights” after successive 2-3 months treatment. A relapse criterion was defined as “more than two wet nights every two weeks” after therapy discontinuation. The relapsed patients were treated with enuretic alarm and followed up again. Results  The patients consisted of 9 boys and 6 girls. The mean age was 9.76±4.24 years (6-15 years). Thirteen patients were successfully cured after three months treatment. Two patients discontinued the treatment and received the treatment of desmopressin. Five patients relapsed and received the enuresis alarm treatment again. Four patients had never relapsed, and one failed. The cure rate was 80%. Conclusions  The enuretic alarm device is effective on MNE patients with a smaller than age-expected BC and without nocturia.