Should We Protect the Coronary Artery During Transcatheter Aortic Valve Replacement in Quadricuspid Valve Patients

An 84-year-old woman with severe aortic stenosis and regurgitation was referred to our institution for transcatheter aortic valve replacement (TAVR). Pre-procedural computed tomography (CT) revealed a type A quadricuspid aortic valve (QAV) (valve leaflets equally divided into 4) without severe