Treatment response of an outpatient training for children with enuresis in a tertiary health care setting

The Time of Spontaneous Resolution of Monosymptomatic Nocturnal Enuresis (MNE) Is Familial

PURPOSE

To investigate whether or not the age of spontaneous resolution of monosymptomatic nocturnal enuresis (MNE) was familial.

PATIENTS AND METHODS

A questionnaire was administered to more than 1,500 people, and 100 appropriate participants were identified from four referral hospitals. We included the participants who had MNE and whose parents also had MNE with spontaneous resolution. Then the association between the spontaneous resolution time of MNE in parents and that in their children was investigated.

RESULTS

The mean ages of spontaneous resolution were 10.7 (10-30 years), 9.4 (6-17 years) and 10.9 (6-18 years) in participants, their mothers and their fathers, respectively. According to the statistical analysis, there was a positive correlation between participants and both their mothers and fathers (p < 0.05). In addition, it was revealed that familial MNE history based on first- and second-degree relatives, in addition to their parents, was also associated with the increased spontaneous resolution age of MNE (p < 0.05). According to our results, gender and parents' education status were not statistically associated with the spontaneous resolution (p > 0.05).

CONCLUSION

As a conclusion, the age of spontaneous resolution of MNE is familial. Although the exact reasons of spontaneous resolution still remain a mystery; further genetic investigations may be able to resolve this mystery.

Winter is associated with failure in the alarm treatment of nocturnal enuresis

OBJECTIVE

To assess whether the winter season in Japan is associated with failure in the alarm treatment of nocturnal enuresis (NE).

PATIENTS AND METHODS

Consecutive patients with NE referred to our center between June 2009 and May 2010 were treated with the enuresis alarm (EA). The EA was used for 16 weeks with each child. Patients were divided into a success group and a treatment failure group. Pretreatment variables were collected, including age, sex, night-time urine volume, severity of enuresis, presence of nocturnal polyuria, presence of daytime incontinence, and treatment initiation season. These variables and initial success rates were retrospectively compared between the two groups. Chi-square, Student t tests, and multivariate regression analysis were used for statistical analysis.

RESULTS

A total of 67 children with NE were evaluated, 37 (55%) in the success group and 30 (45%) in the failure group. None of the pretreatment variables differed significantly between groups except for season; winter season initiation was an independent risk factor for failure in multivariate regression analysis.

CONCLUSIONS

Winter was associated with failure in the EA treatment. We recommend that EA be introduced in the summer season in Japan to achieve an optimal success rate.