Comparison of performance of self-expanding and balloon-expandable transcatheter aortic valves.

ABSTRACT:

Objective

To evaluate the flow dynamics of self-expanding and balloon-expandable transcatheter aortic valves pertaining to turbulence and pressure recovery. Transcatheter aortic valves are characterized by different designs that have different valve performance and outcomes.

Methods

Assessment of transcatheter aortic valves was performed using self-expanding devices (26-mm Evolut [Medtronic], 23-mm Allegra [New Valve Technologies], and small Acurate neo [Boston Scientific]) and a balloon-expandable device (23-mm Sapien 3 [Edwards Lifesciences]). Particle image velocimetry assessed the flow downstream. A Millar catheter was used for pressure recovery calculation. Velocity, Reynolds shear stresses, viscous shear stress, and pressure gradients were calculated.

Results

Th

SUBMITTER: Hatoum H 

PROVIDER: S-EPMC9390782 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature