Abdelnabi Mahmoud Hassan, Shehata Hoda, Saleh Yehia, Elgowelly Mohamed, Almaghraby Abdallah
Cardiology and Angiology Unit, Department of Clinical and Experimental Internal Medicine, Medical Research Institute, University of Alexandria, Alexandria, Egypt.
Department of Cardiology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt.
Echocardiography. 2019 Mar;36(3):615-617. doi: 10.1111/echo.14273. Epub 2019 Feb 9.
Unguarded tricuspid orifice is the most extreme of tricuspid valve dysplasia with a very variable natural history. They can tolerate tricuspid regurgitation well, and they become symptomatic only if significant right ventricular dysfunction or atrial fibrillation occurs. Patients with a mild degree of right ventricular dysfunction can survive to adulthood and even reach old age. Surgical treatment is a difficult option due to variable natural history, and surgical results are not too encouraging.
无保护的三尖瓣口是三尖瓣发育异常最严重的情况，其自然病史差异很大。它们能很好地耐受三尖瓣反流，只有在出现明显的右心室功能障碍或心房颤动时才会出现症状。轻度右心室功能障碍的患者可以存活至成年，甚至步入老年。由于自然病史的差异，手术治疗是一个艰难的选择，而且手术结果也不太令人鼓舞。
