1: Obtain a PWD of the LVI Calculate
the Deceleration Time (DT) which is the time from
the peak velocity of the E wave to the time where
the deceleration slope of the E wave crosses the
zero velocity scale. If the DT is < 150
msec then the PCWP is > 10. If the DT is
> 150 msec then the PCWP is < 10 mmHg.
A high PCWP will rapidly passively fill the left
ventricle causing a sharp deceleration slope which
will decrease the DT.