Key result
Aortic valve replacement successfully treated a 59-year-old man with severe low-flow/low-gradient aortic stenosis, leading to the intraoperative diagnosis of a rare unicommissural unicuspid aortic valve and improvement of LVEF from 17% to 33%.
Case Report (n=1)
Unicommissural unicuspid aortic valve is a rare congenital anomaly that can present as severe low-flow/low-gradient aortic stenosis in adulthood and is often diagnosed intraoperatively.
Adult UAV should enter the differential for unexplained severe calcific AS/AR; leaves open prevalence and natural history questions.
We herein report an adult case of unicommissural unicuspid aortic valve (UAV). A 59-year-old man, who was noted to have a cardiac murmur at 31 years of age, was admitted to our hospital due to acute heart failure. Severe calcification in the aortic valve with severe low-flow/low-gradient aortic stenosis and moderate aortic regurgitation was observed and thought to be the cause of heart failure, however, the etiology of aortic valve dysfunction was not clear. Aortic valve replacement was subsequently performed, and unicommissural UAV was diagnosed according to the intraoperative findings. UAV is very rare congenital aortic valve disease which is rarely diagnosed preoperatively.
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Yamanaka et al. (2016) conducted a case report in Unicommissural unicuspid aortic valve with severe low-flow/low-gradient aortic stenosis (n=1). Aortic valve replacement was evaluated on Postoperative recovery and LVEF improvement. Aortic valve replacement successfully treated a 59-year-old man with severe low-flow/low-gradient aortic stenosis, leading to the intraoperative diagnosis of a rare unicommissural unicuspid aortic valve and improvement of LVEF from 17% to 33%.
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