Urethral valves: management of upper urinary tract changes.

A conservative approach to upper urinary tract changes in urethral valves is suggested. The bladder is initially decompressed by insertion of a feeding tube via the urethra if the patient has azotemia, acidosis, or serious urinary infection. After correction of fluid and electrolyte deficits and control of infection, the valve is destroyed transurethrally despite the presence of severe upper tract dilatation.