Quadricuspid Aortic Valve May Be Misdiagnosed as Bicuspid Aortic Valve

Ali Ridha, Mukesh Singh, Sarah Al-Abayechi, Shoaib Safiullah, Eric Yeung, Vupparahalli Ramesh


Quadricuspid aortic valve (QAV) is a rare congenital cardiac anomaly with incidence of 0.008-0.033%. The most common complication of QAV is aortic regurgitation (75%). Other complications include aortic stenosis, left ventricular hypertrophy, bundle branch blocks, and abnormal displacement of the ostium in the right coronary artery. It is vital that patients with QAV who present with progressive aortic regurgitation undergo valve replacement or repair within an appropriate amount of time. This case report focuses on the presentation of a 20-year-old man who was easily overlooked with transthoracic echocardiography (TTE) during childhood when he was diagnosed with aortic stenosis secondary to bicuspid aortic valve. The patient presented to our cardiology clinic for evaluation of a new diastolic murmur. TTE revealed QAV, moderate aorticinsufficiency, and mild aortic stenosis.

J Med Cases. 2015;6(4):170-172
doi: http://dx.doi.org/10.14740/jmc2090w


Quadricuspid aortic valve; Aortic regurgitation; Aortic stenosis; Transthoracic echocardiogram

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