Sasaki Yasuyuki, Sakaguchi Masanori, Bito Yasuyuki, Suehiro Yasuo, Nishiya Kenta, Inno Goki, Aratame Atsutaka
Department of Cardiovascular Surgery, Osaka City General Hospital, Osaka, Japan.
Kyobu Geka. 2018 Dec;71(13):1081-1083.
A unicuspid aortic valve is an extremely rare congenital aortic valvular abnormality. We herein present 2 cases of unicuspid aortic valve diagnosed based on intraoperative findings. In case 1, a 75-year-old man was admitted to our hospital because of severe aortic regurgitation. We performed aortic valve replacement using a bioprosthetic valve, and a unicuspid aortic valve was definitively diagnosed according to the intraoperative findings. In case 2, a 54-year-old man developed dyspnea due to severe aortic stenosis. Aortic valve replacement using mechanical valve was performed, and we were able to diagnose unicuspid aortic valve intraoperatively. Achieving a preoperative definitive diagnosis of congenital unicuspid aortic valve by transthoracic echocardiography is reportedly difficult;however, transesophageal echocardiography may be effective for preoperative definitive diagnosis.
单叶主动脉瓣是一种极其罕见的先天性主动脉瓣异常。我们在此报告2例根据术中发现确诊的单叶主动脉瓣病例。病例1，一名75岁男性因严重主动脉瓣反流入院。我们使用生物瓣膜进行了主动脉瓣置换术，并根据术中发现明确诊断为单叶主动脉瓣。病例2，一名54岁男性因严重主动脉瓣狭窄出现呼吸困难。进行了机械瓣膜主动脉瓣置换术，术中我们得以诊断出单叶主动脉瓣。据报道，经胸超声心动图术前明确诊断先天性单叶主动脉瓣很困难；然而，经食管超声心动图可能对术前明确诊断有效。
