Teragaki Masakazu, Sakai Yosuke, Asawa Koichiro, Matsumoto Ryo, Kasayuki Noriaki, Nakayama Koji, Tanizawa Shinichi, Tanaka Nobuyuki, Suehiro Shigefumi, Yoshikawa Junichi
Department of Internal Medicine and Cardiology, Wakakusa Daiichi Hospital, 1-6, Wakakusa-cho, Higashi-osaka, 579-8056, Japan.
Am J Med Sci. 2004 Nov;328(5):281-5. doi: 10.1097/00000441-200411000-00008.
Quadricuspid aortic valve (QAV) is a very rare congenital malformation. We have encountered three patients with QAV, of whom one patient may be the eldest reported patient with this particular anatomical abnormality. In another of our patients, there was aortic regurgitation, aortic stenosis, and healed infective endocarditis, with adhesion of the tips of the cusps. In all three patients, the cusps were all of equal size. Until now, there has been very little documented evidence about the anatomical variations in QAV or its relationship with infective endocarditis. From the available literature, we conclude that the anatomical variations in patients with QAV are similar to those in patients with quadricuspid pulmonary valve, and infective endocarditis may not be an uncommon complication.
四叶式主动脉瓣（QAV）是一种非常罕见的先天性畸形。我们遇到了3例QAV患者，其中1例可能是有这种特殊解剖异常的年龄最大的报道患者。在我们的另1例患者中，存在主动脉瓣反流、主动脉瓣狭窄和愈合的感染性心内膜炎，瓣叶尖端粘连。在所有3例患者中，瓣叶大小均相等。到目前为止，关于QAV的解剖变异或其与感染性心内膜炎的关系，记录在案的证据非常少。从现有文献中，我们得出结论，QAV患者的解剖变异与四叶式肺动脉瓣患者的相似，感染性心内膜炎可能是一种并不罕见的并发症。
