Table 2

Least square mean comparisons among LVOT groups at given cut-offs

Group 1 (n=879)Group 2 (n=5344)Group 3 (n=3265)p Valuep Value Value
VariableLVOT 1.7–1.9cmLVOT 2.0–2.2 cmLVOT ≥2.3 cm1 vs 21 vs 32 vs 3
AVA for Vmax=40.810.951.17<0.001<0.001<0.001
AVA for Vmax=50.570.710.92<0.001<0.001<0.001
AVA for AVAi=0.61.021.121.24<0.001<0.001<0.001
AVAi for Vmax=40.490.510.57<0.001<0.001<0.001
AVAi for Vmax=50.370.390.44<0.001<0.001<0.001
Vmax for AVA=13.543.834.13<0.001<0.001<0.001
Vmax for AVAi=0.63.523.593.72<0.001<0.001<0.001
Vmax for MG=303.593.583.570.70.060.01
Vmax for MG=404.114.14.090.70.060.01
Vmax for MG=504.584.574.560.70.060.01
MG for AVA=1293542<0.001<0.001<0.001
MG for AVAi=0.628.830.333.1<0.001<0.001<0.001
MG for Vmax=32121.121.30.70.10.05
MG for Vmax=437.337.337.50.70.10.05
MG for Vmax=55959.159.20.70.10.05
DI TVI for AVA=1*0.360.290.22<0.001<0.001<0.001
DI TVI for AVAi=0.6*0.360.320.28<0.001<0.001<0.001
DI TVI for Vmax=4*0.30.280.25<0.001<0.001<0.001
• *DI calculated by peak velocity was identical to DI TVI.

• AVA (cm2), MG (mm Hg), Vmax (m/s), AVAi (cm2/m2).

• AVA, aortic valve area; AVAi, indexed AVA; DI, dimensionless index; LVOTd, left ventricular outflow tract diameter; MG, mean gradient.