Results:

Device implantation was successful in all patients. Prosthesis recapture and repositioning were performed in four patients due to suboptimal initial positioning. Intermittent prosthetic leaflet dysfunction in one patient required implantation of a second transcatheter valve. There was one minor stroke. At 30-day follow-up, echocardiographic mean transaortic gradient was reduced from 44.9 mm Hg to 10.9 mm Hg (p < 0.001), and valve area increased from 0.6 cm² to 1.3 cm² (p < 0.001). Paravalvular regurgitation was absent or trace in five patients, mild in four patients and moderate in one patient. No patient had more than trivial valvular regurgitation. There were no major strokes, major vascular complications, major bleeds, or deaths. No patient required pacemaker implantation. All patients were in New York Heart Association functional class II or less at follow-up.