Figure 1
Cumulative percentage of different degrees of post-TAVR AR by video densitometric assessment.
AR: aortic valve regurgitation; TAVR: transcatheter aortic valve replacement.
Figure 2
Comparison of LVOT-AR after TAVR among the five THVs. Bars denote the mean regurgitation values, and error bars denote standard errors of the mean.
LVOT-AR: quantitative aortic regurgitation in the left ventricular outflow tract; TAVR: transcatheter aortic valve replacement; THV: transcatheter heart valve.
Figure 3
Cumulative frequency curves of LVOT-AR after TAVR for the five THVs. The shaded background shows the area above 17% of AR, indicating moderate or severe regurgitation.
LVOT-AR: quantitative aortic regurgitation in the left ventricular outflow tract; TAVR: transcatheter aortic valve replacement; THV: transcatheter heart valve.
Figure 4
Cumulative frequency curves of LVOT-AR for the first 56 cases and the latest 57 cases with Venus A-valve.
LVOT-AR: quantitative aortic regurgitation in the left ventricular outflow tract.
Table 1
Design features of the five THVs.
| THVs | Self-expanding pericardial skirt | External pericardial wrap | Other features |
|---|---|---|---|
| Evolut Pro (23, 26, 29 mm) | Longer than CoreValve | yes | Porcine pericardium tissue valve. SE Nitinol frame. Recapturable, retrievable, repositionable. Ten percent smaller in height than CoreValve. 16 Fr. |
| Evolut R (23, 26, 29, 31 mm) | Longer than CoreValve | no | Porcine pericardium tissue valve. SE Nitinol frame. Recapturable, retrievable, repositionable. Ten percent smaller in height than CoreValve. 14/16 Fr. |
| Venus-A (23, 26, 29, 32 mm) | yes | no | Porcine native aortic leaflets. SE nitinol frame. Not retrievable, repositionable. Designed with increased radial force at the initial 20 mm of the stent inflow segment. Has three positioning marker. 19 Fr. |
| Acurate Neo (23, 25, 27 mm) | yes | no | Porcine native aortic leaflets. SE nitinol frame. Not retrievable, repositionable, fast pacing. Minimal protrusion into LV. Top-down deployment. The self-alignment and self-centering design. 18 Fr. |
| CoreValve (26, 29, 31 mm) | yes | no | Bovine pericardium tissue valve. SE Nitinol frame. Not recapturable, not retrievable, not repositionable. 18/20 Fr. |