Última generación de prótesis percutáneas expandibles con balón y autoexpandibles en la estenosis aórtica bicúspide: estudio TRITON / Latest-iteration balloon- and self-expandable transcatheter valves for severe bicuspid aortic stenosis: the TRITON study

Introducción y objetivos: La última generación de válvulas cardiacas expandibles con balón y autoexpandibles para implante percutáneo no se han comparado en valvulopatía aórtica bicúspide (VAB).Métodos: Registro multicéntrico de pacientes consecutivos con VAB y estenosis grave tratados con las válvulas cardiacas expandibles con balón (Myval y SAPIEN 3 Ultra [S3U]) o autoexpandible Evolut PRO+(EP+). Se realizó un análisis de tripletes mediante el software TriMatch para minimizar el impacto de las diferencias basales. El objetivo primario del estudio fue evaluar la tasa de éxito del dispositivo a 30 días y los objetivos secundarios, el objetivo combinado de seguridad y sus componentes individuales a 30 días.Resultados: Se incluyó a 360 pacientes (media de edad, 76,6±7,6 años; el 71,9% varones); 122 con Myval (33,9%), 129 con S3U (35,8%) y 109 con EP+(30,3%). La media de puntuación STS fue de 3,6±1,9%. No hubo ningún caso de oclusión coronaria, rotura de anillo, disección aórtica o mortalidad periprocedimiento. El evento primario de éxito del dispositivo a 30-días fue significativamente superior en el grupo que recibió Myval (Myval, 100%; S3U, 87,5%, y EP+, 81,3%), fundamentalmente a expensas de mayor gradiente residual con S3U y mayor tasa de insuficiencia aórtica al menos moderada con EP+. La tasa no ajustada de implante de marcapasos no presentó diferencias significativas.Conclusiones: En la VAB con estenosis grave y cirugía contraindicada, Myval, S3U y EP+tuvieron una seguridad comparable, aunque Myval presentó mejor gradiente residual que S3U y ambos dispositivos expandibles con balón resultaron en menos fuga perivalvular residual que EP+. Por lo tanto, ajustándose a los riesgos específicos de cada paciente, se puede seleccionar cualquiera de los 3 dispositivos con resultados óptimos.(AU)

Introduction and objectives: No comparisons have been published yet regarding the newest iteration of balloon- and self-expandable transcatheter heart valves for the treatment of bicuspid aortic valve (BAV) stenosis.Methods: Multicenter registry of consecutive patients with severe BAV stenosis treated with balloon-expandable transcatheter heart valves (Myval and SAPIEN 3 Ultra, S3U) or self-expanding Evolut PRO+(EP+). TriMatch analysis was carried out to minimize the impact of baseline differences. The primary endpoint of the study was 30-day device success, and the secondary endpoints were the composite and individual components of early safety at 30 days.Results: A total of 360 patients (age 76.6±7.6 years, 71.9% males) were included: 122 Myval (33.9%), 129 S3U (35.8%), and 109 EP+(30.3%). The mean STS score was 3.6±1.9%. There were no cases of coronary artery occlusion, annulus rupture, aortic dissection, or procedural death. The primary endpoint of device success at 30 days was significantly higher in the Myval group (Myval: 100%; S3U: 87.5%; and EP+: 81.3%), mainly due to higher residual aortic gradients with S3U and greater≥moderate aortic regurgitation (AR) with EP+. No significant differences were found in the unadjusted rate of pacemaker implantation.Conclusions: In patients with BAV stenosis deemed unsuitable for surgery, Myval, S3U and EP+showed similar safety but balloon-expandable Myval had better gradients than S3U, and both balloon-expandable devices had lower residual AR than EP+, suggesting that, taking into consideration the patient-specific risks, any of these devices can be selected with optimal outcomes.(AU)

Latest-iteration balloon- and self-expandable transcatheter valves for severe bicuspid aortic stenosis: the TRITON study.

INTRODUCTION AND OBJECTIVES: No comparisons have been published yet regarding the newest iteration of balloon- and self-expandable transcatheter heart valves for the treatment of bicuspid aortic valve (BAV) stenosis. METHODS: Multicenter registry of consecutive patients with severe BAV stenosis treated with balloon-expandable transcatheter heart valves (Myval and SAPIEN 3 Ultra, S3U) or self-expanding Evolut PRO+(EP+). TriMatch analysis was carried out to minimize the impact of baseline differences. The primary endpoint of the study was 30-day device success, and the secondary endpoints were the composite and individual components of early safety at 30 days. RESULTS: A total of 360 patients (age 76.6±7.6 years, 71.9% males) were included: 122 Myval (33.9%), 129 S3U (35.8%), and 109 EP+(30.3%). The mean STS score was 3.6±1.9%. There were no cases of coronary artery occlusion, annulus rupture, aortic dissection, or procedural death. The primary endpoint of device success at 30 days was significantly higher in the Myval group (Myval: 100%; S3U: 87.5%; and EP+: 81.3%), mainly due to higher residual aortic gradients with S3U and greater≥moderate aortic regurgitation (AR) with EP+. No significant differences were found in the unadjusted rate of pacemaker implantation. CONCLUSIONS: In patients with BAV stenosis deemed unsuitable for surgery, Myval, S3U and EP+showed similar safety but balloon-expandable Myval had better gradients than S3U, and both balloon-expandable devices had lower residual AR than EP+, suggesting that, taking into consideration the patient-specific risks, any of these devices can be selected with optimal outcomes.

Transcatheter Mitral Valve-in-Valve Implantation with the Balloon-Expandable Myval Device.

Background: The vast majority of transcatheter valve-in-valve (ViV) mitral procedures have been reported with the SAPIEN family. We aimed to report the preliminary experience with the Myval balloon-expandable device in this setting. Methods: Multicenter retrospective study of high-risk surgical patients with mitral bioprosthesis degeneration undergoing transcatheter ViV implantation with Myval device. Results: A total of 11 patients from five institutions were gathered between 2019 and 2022 (age 68 ± 7.8, 63% women). The peak and mean transvalvular gradients were 27 ± 5 mmHg and 14.7 ± 2.3 mmHg, respectively, and the predicted neo-left ventricular outflow tract (neo-LVOT) area was 183.4 ± 56 mm2 (range: 171 to 221 mm2). The procedures were performed via transfemoral access in all cases (through echocardiography-guided transeptal puncture (81.8% transesophageal, 11.2% intracardiac)). Technical success was achieved in all cases, with no significant residual mitral stenosis in any of them (peak 7.2 ± 2.7 and mean gradient 3.4 ± 1.7 mmHg) and no complications during the procedure. There were no data of LVOT obstruction, migration, or paravalvular leak in any case. Mean hospital stay was 3 days, with one major vascular complication and no stroke. At 6-month follow-up, there was one case with suboptimal anticoagulation presenting an increase in the transmitral gradients (mean 15 mmHg) that normalized after optimization of the anticoagulation, but no other relevant events. Conclusions: Transseptal ViV mitral implantation with the balloon-expandable Myval device was feasible and safe avoiding redo surgery in high-risk patients with bioprosthesis degeneration.