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Posterior Urethral Valves
Congenital obstructive membrane-like structures in the male posterior urethra causing urinary obstruction.
Full Definition
Posterior urethral valves (PUV) are the most common cause of severe obstructive uropathy in male infants. These abnormal membranous folds in the posterior urethra act as one-way valves, allowing urine flow out but creating high-pressure backflow that can damage the kidneys and bladder. The condition may present prenatally with oligohydramnios or postnatally with poor urinary stream, failure to thrive, or urinary tract infections. Treatment involves endoscopic valve ablation, often requiring temporary urinary diversion in severe cases.
Usage
Usage note: Abbreviated as PUV; only affects males; classified as Types I, II, or III.
In Context
- "Prenatal ultrasound showing severe oligohydramnios raised suspicion for posterior urethral valves." — Maternal-fetal medicine report
- "Endoscopic valve ablation was performed for Type I posterior urethral valves with good initial results." — Pediatric urology operative report
Also known as
PUV
Don't confuse with
Urethral Stricture
Neurogenic Bladder
Prune Belly Syndrome