Observational Study
Copyright ©The Author(s) 2021.
World J Cardiol. Aug 26, 2021; 13(8): 361-371
Published online Aug 26, 2021. doi: 10.4330/wjc.v13.i8.361
Table 2 Echocardiographic and procedural characteristics, stratified according to whether patients had invasive angiogram before their transcatheter aortic valve implantation procedure

Whole group (n = 348)
No coronary angiogram group (n = 194)
Coronary angiogram group (n = 154)
P value
Peak gradient (mean ± SD)74 ± 2373 ± 2274 ± 24NS
Mean gradient (mean ± SD)43 ±1544 ±1543 ±15NS
Valve area (mean ± SD)0.70 ± 0.200.71 ± 0.180.69 ± 0.22NS
Preserved LV function, n (%)274 (79)158 (81)116 (75)NS
Moderate MR, n (%)35 (10)20 (10)15 (10)NS
PA pressure (mean ± SD)39 ± 2040 ± 1539 ± 25NS
Indication for AR or mixed AoV disease, n (%)19 (6)9 (5)10 (7)NS
Bioprosthetic valve, n (%)17 (5)14 (7)3 (2)< 0.05
GA, n (%)23 (7)4 (2)19 (12)< 0.01
BAV, n (%)34 (10)15 (8)19 (12)NS
Transfemoral approach, n (%)311 (89)183 (94)128 (83)< 0.01
Balloon-expanding, n (%)295 (85)161 (83)134 (87)NS
Valve size (> 23 mm), n (%)222 (64)125 (64)97 (63)NS