Koizumi S, Arai S, Kato T
Department of Cardiovascular Surgery, Hachinohe Municipal Hospital.
Kyobu Geka. 1990 Jun;43(6):505-8.
A 67-year-old man with grade 3 aortic valve regurgitation was found to have a quadricuspid aortic valve. The aortic valve consisted of 1 large, 2 intermediate and 1 small sized cusp. An accessory cusp located between the right and noncoronary cusps, and shaped like a hammock which sling by the fibrous strings originating from the both commissures to the aortic wall. Aortic valve replacement was successfully performed with a 23 mm St. Jude Medical prosthetic valve, and the patient is asymptomatic five months post-operatively. Histological examination of the resected cusps showed fibrous thickening and no rheumatic valvulitis or infective endocarditis.
一名67岁患有重度主动脉瓣反流的男性被发现有四叶式主动脉瓣。主动脉瓣由1个大瓣叶、2个中等大小瓣叶和1个小瓣叶组成。一个副瓣叶位于右冠瓣和无冠瓣之间，形状像吊床，由源自两个瓣叶联合处至主动脉壁的纤维束悬吊。使用23毫米圣犹达医疗人工瓣膜成功进行了主动脉瓣置换术，患者术后五个月无症状。切除瓣叶的组织学检查显示有纤维增厚，无风湿性瓣膜炎或感染性心内膜炎。
