For the assessment of pulmonary artery mean pressure, the next formula is used:
Pmean = 79 - AT x 45
Pmean - Mean PA pressure. AT - RVOT Flow Acceleration Time.
Acceleration Time is The time from the opening of the valve to the peak flow.
Measurement of the RVOT Flow Acceleration Time AT conducts in PW mode of spectral Doppler.
RVOT Flow PW doppler. Pulmonary Artery Mean pressure measurement by Flow Acceleration Time (AT). Echocardiography Online Simulator MyEchocardiography.com
ASE Guideline for Pulmonary Artery Systolic pressure Assessment
How to Simulate Assessment of the Pulmonary Artery Mean Pressure? >>>