開心術後に発生した尿道狭窄の3例

THREE CASES OF URETHRAL STRICTURE FOLLOWED BY CARDIAC SURGERY WITH EXTRACORPOREAL CIRCULATION

　体外循環による心臓手術後に発生した尿道狭窄の3例を報告する．症例1,2は大動脈弁置換術後に前部尿道狭窄を生じ，症例3は三弁（大動脈弁，僧帽弁，三尖弁）置換術後に前部尿道狭窄を生じた．心臓手術中の大動脈遮断による尿道の血流低下は，尿道狭窄の発生に影響を及ぼしたと推測される．

Three cases of anterior urethral stricture after cardiac surgery with extracorporeal circulation are reported. The patients, 73-year-old male and 18-year-old male, had a history of aortic valve replacement. The third patient was a 46-year-old male after aortic, mitral and tricupidal valve replacement. Low blood supply to the urethra caused by cramp of aorta is suggested to affect the development of urethral stricture.