Peak Velocity |
< 1.9 m/s |
1.9 – 2.5 m/s |
≥ 2.5 m/s |
|---|---|---|---|
Mean Gradient |
< 5 mmHg |
6 – 10 mmHg |
> 10 mmHg |
Dimensionless Index |
< 2.2 |
2.2 – 2.5 |
2.5 |
EOA |
≥ 2 cm2 |
1 – 2 cm2 |
1 cm2 |
Pressure Half Time (PHT) |
< 130 msec |
130 – 200 msec |
> 200 msec |