28 Jul 2020
Infolding of a self-expanding bioprosthesis due to loss of nitinol memory during transcatheter aortic valve implantation
EuroIntervention Journal
A 78-year-old gentleman had transcatheter aortic valve implantation using an Evolut™ R valve. On computed tomography (CT) the perimeter-derived annulus diameter was 29.1 mm. A 34 mm Evolut R was precisely loaded and the same was confirmed fluoroscopically before insertion into the sheath.
The Evolut R was recaptured twice due to unsatisfactory positioning. During the third release, following confirmation of annular position, the valve was deployed. Post deployment the patient had cardiac arrest and prompt cardiopulmonary resuscitation was initiated. It was then noticed that in the previous cine frame at 85% deployment there was infolding of the valve frame which had been overlooked.
Authors
N. Vasu, A. Chopra, R. Singh Rao, M. Sankardas Ajit
