Successful Valve-in-Valve-in-Valve Transcatheter Aortic Valve Implantation for Severe Bioprosthetic Valve Restenosis in a High-Risk Patient.

Transcatheter aortic valve implantation (TAVI) has significantly improved in treating aortic valve disease in recent years, particularly in patients at high surgical risk. This case report describes an 80-year-old woman who had severe aortic stenosis previously treated with surgical aortic valve replacement (SAVR) and six years later had a valve-in-valve (ViV) TAVI who developed severe symptomatic restenosis of the bioprosthetic aortic valve five years later of the last procedure. A third valve-in-valve-in-valve (ViViV) TAVI using a 26-mm Sapien 3 valve was performed due to the high surgical risk.

High-Degree Atrioventricular Block and Torsades De Pointes in Severe Aortic Stenosis Treated With Transcatheter Aortic Valve Replacement.

Severe aortic stenosis (AS) significantly elevates cardiovascular risk, predisposing patients to high-degree atrioventricular (AV) block and life-threatening tachyarrhythmias, including torsades de pointes (TdP). This case report presents a patient with severe AS who developed high-degree AV block and, subsequently, TdP, highlighting the interplay between bradycardia and mechanisms that trigger ventricular tachycardias. The case underscores the importance of identifying and managing these risk factors to improve patient outcomes.