Echocardiographic measurements | All patients (n=77 067) | Severity by documented interpretation | |
Severe (n=1219) (1.6%) | Non-severe (n=75 848) (98.4%) | ||
Individual elements | |||
Peak velocity≥4.0 m/s | 1040 (1.3%) | 852 (69.9%) | 188 (0.2%) |
Mean gradient≥40 mm Hg | 852 (1.1%) | 759 (62.3%) | 93 (0.1%) |
Aortic valve area≤1.0 cm2 | 3055 (4.0%) | 1147 (94.1%) | 1908 (2.4%) |
Indexed aortic valve area≤0.6 cm2/m2 | 5075 (6.6%) | 1185 (97.2%) | 3890 (4.9%) |
Dimensionless index (VTI)≤0.25 | 1643 (2.1%) | 972 (79.7%) | 671 (0.9%) |
Dimensionless index (peak velocity)≤0.25 | 1640 (2.1%) | 981 (80.5%) | 659 (0.8%) |
Combined elements | |||
Peak velocity or mean gradient | 1079 (1.4%) | 876 (71.9%) | 203 (0.3%) |
Peak velocity, mean gradient or aortic valve area | 3196 (4.1%) | 1199 (98.4%) | 1997 (2.5%) |
Peak velocity, mean gradient or indexed valve area | 5134 (6.7%) | 1206 (98.9%) | 3928 (5.0%) |
Peak velocity, mean gradient or dimensionless index (VTI) | 1959 (2.5%) | 1145 (93.9%) | 814 (1.0%) |
Peak velocity, mean gradient or dimensionless index (peak velocity) | 1909 (2.6%) | 1120 (91.9%) | 789 (1.0%) |
VTI, velocity time integral.