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| Aortic Valve Prolapse Aortic Valve Prolapses | Prolapse, Aortic Valve | Prolapses, Aortic Valve | Valve Prolapse, Aortic | Valve Prolapses, Aortic The downward displacement of the cuspal material (misalignment of the cusps) below a line joining points of attachment of the aortic valve leaflets. The prolapsed cusp may occlude the ventricular septal defect during ventricular diastole. |