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Primary bladder neck dysfunction in children and adolescents III: results of long-term alpha-blocker therapy.

Journal of Urology 2010 Februrary
PURPOSE: Primary bladder neck dysfunction is a nonneurogenic voiding disorder frequently overlooked in pediatrics. The diagnosis classically is made by videourodynamics but can also be made with noninvasive uroflow studies with pelvic floor electromyography. We report our long-term results using alpha-blocker therapy in patients with primary bladder neck dysfunction.

MATERIALS AND METHODS: We reviewed 51 neurologically normal children (mean age 11.6 years, range 3.5 to 17.8) meeting criteria for primary bladder neck dysfunction who underwent alpha-blocker therapy for at least 1 year. All patients were symptomatic with abnormal flow parameters and an electromyogram lag time of 6 seconds or more on initial uroflow/electromyography. Pretreatment and on-treatment uroflow/electromyogram studies were performed in all patients. Average and maximum uroflow rates, electromyogram lag times and post-void residual volumes were compared.

RESULTS: After a mean followup of 46.2 months (range 12 to 124) mean average and maximum uroflow rates improved from 7.0 to 12.4 cc per second and from 12.4 to 20.3 cc per second, respectively, while mean electromyogram lag time decreased from 30.8 to 5.8 seconds (all p <0.01). Of the patients 85% reported subjective symptomatic relief. A total of 15 patients (29%) stopped alpha-blocker therapy for various reasons, none related to side effects. Repeat off-treatment uroflow/electromyogram studies showed that measured parameters reverted to pretreatment values (all p <0.05). Eight of these 15 patients eventually resumed alpha-blocker therapy, while only 3 remained asymptomatic off of the alpha-blocker.

CONCLUSIONS: alpha-Blocker therapy continues to benefit children with primary bladder neck dysfunction even after 3 years of treatment. Few patients can come off of alpha-blocker therapy without returning to their pretreatment state, suggesting the condition is likely chronic in most patients.

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