Successful alpha-1 receptor blockade therapy in a toddler with infrequent and difficult voiding
Related Experiment Video
Updated: Aug 11, 2026

Real-Time Void Spot Assay
Published on: February 10, 2023
William Lane M Robson1, Alexander K C Leung
1Pediatric Urology, University of Oklahoma, USA.
Insights
A penile injury in a young boy led to difficult urination and a distended bladder. Alpha-1 receptor blockers effectively treated the voiding dysfunction, resolving symptoms rapidly.
Area of Science:
- Pediatric Urology
- Urologic Trauma
- Functional Voiding Disorders
Background:
- A 3-year-old boy experienced persistent voiding difficulties following a soft tissue injury to the glans penis.
- The condition lasted over 9 months, impacting bladder function and leading to a distended bladder.
- Diagnostic evaluations indicated elevated bladder volumes and impaired voiding dynamics.
Observation:
- The patient presented with infrequent and difficult urination post-penile injury.
- Imaging revealed a markedly distended bladder, suggesting significant urinary retention.
- Voiding diaries corroborated the presence of high bladder volumes.
Findings:
- Treatment with an alpha-1 receptor blocker rapidly normalized voiding within 24 hours.
- Discontinuation of the medication led to symptom recurrence within 48 hours.
- Reinitiation of alpha-1 receptor blocker therapy promptly resolved the voiding dysfunction.
Implications:
- Alpha-1 receptor blockers may be an effective treatment for post-traumatic voiding dysfunction in children.
- This case highlights a potential link between penile trauma and functional bladder outlet obstruction.
- Further research is warranted to explore the pathophysiology and long-term outcomes of such injuries.
Abstract:
A 3-year-old neurologically intact and behaviorally normal boy developed infrequent and difficult voiding subsequent to a soft tissue injury to the glans penis. Symptoms persisted for at least 9 months, and the course was complicated by diagnostic imaging evidence of a "markedly distended" bladder and a voiding diary that suggested elevated bladder volumes. Treatment with an alpha-1 receptor blocker normalized voiding within 24 hours. Discontinuation of the medication after 2 weeks resulted in recurrence of symptoms within 48 hours. Readministration of the medication resulted in prompt resolution of symptoms.
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