1. Peak TR velocity > 2.8 m/sec is suggestive of elevated LAP.
2. In patients with depressed LVEFs, mitral DT (≤160 msec) has reasonable accuracy for the prediction of increased LV diastolic pressures and adverse clinical outcomes.
3. In patients with incomplete TR jet other Doppler measurements can be applied, including peak acceleration rate of mitral E velocity ≥ 1,900 cm/sec², IVRT ≤ 65 msec, DT of pulmonary venous diastolic velocity ≤ 220 msec, E/Vp ratio ≥ 1.4, and E/e' ratio ≥ 11.
4. The variability of mitral inflow velocity with the RR cycle length is of value in patients with AF, as patients with increased filling pressures have less beat to beat variation.