Effect of Aortic Angulation on Outcomes in Transcatheter Aortic Valve Implantation with the Self-Expanding Portico Valve

Year 2022, Volume: 25 Issue: 2, 132 - 140, 20.08.2022

Serkan Aslan Aysel Türkvatan Ahmet Güner Serkan Kahraman Ümit Bulut Gökhan Demirci Enes Arslan Ömer Çelik Mehmet Ertürk

Abstract

Introduction: Aortic angulation (AA), defined as the angle between the aortic annulus plane and the horizontal plane, may result in failed prosthesis positioning. The effect of AA on the procedural and short-term outcomes with the portico valves for transcatheter aortic valve implantation (TAVI) has not been fully investigated. The present study aimed to evaluate the impact of AA on device success and early outcomes of TAVI using a selfexpanding portico valve.

Patients and Methods: Preoperative computed tomography scans of 121 consecutive patients treated with the portico valve were analyzed. TAVI device success and outcomes were determined according to VARC-3 definitions. Patients were divided into two groups based on mean AA.

Results: The mean AA was 48.7 ± 8.9°. There were no differences in technical success (92.2 vs 89.5%, p= 0.604), device success (81.2% vs 77.2%, p= 0.582), and early safety endpoints (68.8% vs 61.4%, p= 0.397) between the AA≤ 48° and AA> 48° groups. The frequency and severity of paravalvular aortic regurgitation (PAR) was statistically higher in patients with AA> 48° (p= 0.028). Moreover, an increased AA was also associated with valve malposition (12.3% vs. 1.6%, p= 0.018), prolonged procedure time (85 ± 26 vs. 75 ± 20 minutes, p= 0.028), and greater Δimplantation depth (2.2 ± 0.5 vs. 0.8 ± 0.1 mm; p< 0.001).

Conclusion: Despite comparable device success and early outcomes rates, increased AA is associated with higher rates of PAR and valve malposition, with the self-expanding portico valve.

Keywords

Aortic angulation, computed tomography, self-expanding valve, transcatheter aortic valve implantation

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