Conformational Pulsatile Changes of the Aortic Annulus: Potential Implications for Prosthesis Sizing for Transcatheter Aortic Valve Implantation by Computed Tomography

Ziele: To evaluate the potential influence of the cardiac reconstruction phase on aortic annulus dimension and prosthesis selection by dual-source computed tomography (DSCT) in patients undergoing trans-catheter aortic valve replacement (TAVI). Methode: One-hundred-and-twelve patients with severe aortic stenosis (mean age 81±8 years, mean aortic valve area 0.69±0.18cm2) and sinus rhythm underwent retrospectively gated DSCT for evaluation for potential TAVI. Aortic annulus dimensions were quantified by cross-sectional area assessment by means of planimetry and average diameter calculation (calculated average annu…