Electromyographic and urethral pressure profilometry: long-term assessment of urethral function after perineal urethrostomy in cats.

Urethral pressure and electromyographic profiles were recorded in 18 adult male cats about 61 months after perineal urethrostomy was done. The loss of striated sphincter function postoperatively was reversible in some cats. The increased frequency of bacterial urinary tract infection seen in cats postoperatively after perineal urethrostomy cannot be explained by compromised urethral sphincter function alone.