Tamura K, Shirai T, Ohshima N
Department of Thoracic Surgery, Ome Municipal General Hospital, Ome, Japan.
Kyobu Geka. 2006 May;59(5):411-3.
Rupture of a fibrous strand of a tricuspid aortic valve is extremely rare. We describe a patient with aortic regurgitation due to spontaneous rupture of the fibrous strands that suspend the aortic valve leaflets. The fibrous strands were recognized between the left and right coronary cusps, and between the left coronary and non-coronary cusps during the operation. The fibrous strand between the left coronary and non-coronary cusps had been ruptured, and thus the left coronary and non-coronary cusps were prolapsed into the left ventricle. Since a degenerative change was observed histologically in the resected specimen, these fibrous strands were considered to be an embryonic remnant of the aortic valve.
三尖瓣主动脉瓣纤维束破裂极为罕见。我们描述了一名因悬吊主动脉瓣叶的纤维束自发破裂而导致主动脉瓣反流的患者。术中在左、右冠状动脉瓣叶之间以及左冠状动脉瓣叶与无冠状动脉瓣叶之间发现了纤维束。左冠状动脉瓣叶与无冠状动脉瓣叶之间的纤维束已经破裂，因此左冠状动脉瓣叶与无冠状动脉瓣叶脱垂至左心室。由于在切除的标本中组织学观察到退行性改变，这些纤维束被认为是主动脉瓣的胚胎残余物。
