Post‐Transcatheter Aortic Valve Replacement Acute Severe Mitral Regurgitation: A Case Report

New-onset severe MR following TAVR is an uncommon yet clinically significant complication that necessitates prompt identification and intervention. In cases where intraprocedural hypotension occurs, transient papillary muscle dysfunction should be considered as a potential underlying mechanism, particularly when the MR is reversible and not associated with structural MV abnormalities or evidence of myocardial ischemia.