We hypothesize that overnight catheter drainage (OCD) of the urinary bladder might improve bladder dynamics and subsequently lead to improvement or resolution of hydronephrosis (HN) and renal function in boys who underwent PUV ablation. Patients who have persistent HN and bladder dysfunction at least one year after PUV ablation will be randomly allocated into two groups: the first group (control group): 55 patients, their parents will be taught the timed voiding regimen every 2 hours, while the second group (OCD group): 55 patients, their parents will be taught the timed voiding regimen every 2 hours, in addition to placing an overnight catheter to drain the urinary bladder during night. We will study the effect of OCD of the urinary bladder on the improvement or resolution of HN and urinary bladder function within a year of starting this regimen.
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Improvement or Resolution of Hydronephrosis
Timeframe: One Year