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https://pmc.ncbi.nlm.nih.gov/articles/PMC8827235/ Quadricuspid Aortic Valve: An Introduction for Clinicians - PMC Quadricuspid aortic valve (QAV) is a congenital heart anomaly in which the aortic valve has four cusps of various size possibilities, as opposed to the three... quadricuspid aortic valvean introductionfor clinicianspmc https://pmc.ncbi.nlm.nih.gov/articles/PMC11075509/ Quadricuspid Aortic Valve: Imaging, Diagnosis, and Prognosis - PMC Quadricuspid aortic valve is a rare congenital cardiac anomaly with an incidence of 0.008% to 0.043%. Its clinical course varies depending on cusp anatomy,... quadricuspid aortic valveimaging diagnosisprognosispmc