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Table 1 Clinical, echocardiographic and procedural characteristics of the study population

From: Two-dimensional transesophageal echocardiography for aortic annular sizing in patients undergoing transcatheter aortic valve implantation

Variable Mean ± SD
Age, years 82.4 ± 5.5
Female gender, % 55.6
Atrial fibrillation, % 50.8
Ejection fraction, % 55 ± 10
Aortic valve area, cm2 0.74 ± 0.31
Peak pressure gradient, mmHg 72.6 ± 21.4
Mean pressure gradient, mmHg 47.5 ± 14.6
Annulus diameter using TEE hinge-to-hinge (long axis view), mm 20.3 ± 2.2
Annulus diameter using CT, mm 23.9 ± 2.3
Annulus diameter according to circumcircle of a triangle method, mm 25.6 ± 2.4
Annulus area using CT, mm2 453.3 ± 77.7
Annulus area according to circumcircle of a triangle method, mm2 495.6 ± 95.7
Access site  
Femoral 65 %
Apical 35 %
Valve size  
23-mm 36.5 %
26-mm 47.6 %
29-mm 15.9 %
Post-operative AR (angiographic)  
No 62 %
Minimal/mild 30 %
Moderate 8 %
Post-operative AR (echocardiographic)  
No 51 %
Minimal/mild 38 %
Moderate 11 %
Post-operative peak gradient, mmHg 20.6 ± 6.5
Post-operative mean gradient, mmHg 11.8 ± 3.8