Transcatheter aortic valve implantation with the Evolut platform for bicuspid aortic valve stenosis: the international, multicentre, prospective BIVOLUTX registry

Didier Tchetche, Francesca Ziviello, Chiara De Biase, Ole de Backer, Thomas Hovasse, Lionel Leroux, Anna-Sonia Petronio, Christophe Saint-Etienne, Rui Campante Teles, Thomas Modine, Arnaud Sudre, Emmanuel Teiger, Darren Mylotte, Geraud Souteyrand, Nicolo Piazza, Frederic Casassus, Lars Sondergaard, Marco Angelillis, Tiago Nolasco, Saiffullah SiddiquiIsabella Kardys, Nicolas Dumonteil, Nicolas M Van Mieghem

Abstract

BACKGROUND: Prospective data about transcatheter aortic valve implantation (TAVI) in bicuspid aortic valve (BAV) patients are limited.

AIMS: We aimed to evaluate the clinical impact of the Evolut PRO and R (34 mm) self-expanding prostheses in BAV patients and explore the impact of different computed tomography (CT) sizing algorithms in a prospective registry.

METHODS: A total of 149 bicuspid patients were treated in 14 countries. The primary endpoint was the intended valve performance at 30 days. Secondary endpoints were 30-day and 1-year mortality, severe patient-prosthesis mismatch (PPM) and the ellipticity index at 30 days. All study endpoints were adjudicated according to Valve Academic Research Consortium 3 criteria.

RESULTS: The mean Society of Thoracic Surgeons score was 2.6% (1.7-4.2) Type I L-R BAV was observed in 72.5% of the patients. Evolut valve sizes 29 and 34 mm were utilised in 49.0% and 36.9% of the cases, respectively. The 30-day cardiac death rate was 2.6%; the 1-year cardiac death rate was 11.0%. Valve performance at 30 days was observed in 142/149 (95.3%) patients. The mean aortic valve area post-TAVI was 2.1 (1.8-2.6) cm2, and the mean aortic gradient was 7.2 (5.4-9.5) mmHg. No patient had more than moderate aortic regurgitation at 30 days. PPM was observed in 13/143 (9.1%) surviving patients and was severe in 2 patients (1.6%). Valve function was maintained at 1 year. The mean ellipticity index remained 1.3 (interquartile range 1.2-1.4). Overall, 30-day and 1-year clinical and echocardiography outcomes were similar between the two sizing strategies.

CONCLUSIONS: BIVOLUTX demonstrated a favourable bioprosthetic valve performance and good clinical outcomes after TAVI with the Evolut platform in patients with bicuspid aortic stenosis. No impact from the sizing methodology could be identified.

OriginalsprogEngelsk
TidsskriftEuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology
Vol/bind19
Udgave nummer6
Sider (fra-til)502-511
Antal sider10
ISSN1774-024X
StatusUdgivet - 21 aug. 2023

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