Balloon Over- and Underfilling of Balloon-Expandable Transcatheter Heart Valves for Treatment of Borderline Aortic Annuli Dimensions in Aortic Valve Stenosis.

This article discusses the use of balloon over- and underfilling strategies in transcatheter aortic valve implantation (TAVI) for patients with borderline aortic annuli dimensions. The study analyzed outcomes of 126 patients who received TAVI using balloon-expandable transcatheter heart valves with modified balloon filling volumina. The results showed that individualized balloon filling strategies were safe and effective in addressing borderline aortic annulus dimensions, with overfilling more common in patients with mild calcification and underfilling less frequent. Propensity score matching revealed no significant differences in clinical endpoints between patients with individualized versus nominal balloon filling. [Extracted from the article]