Estimating Pulmonary Artery Pressure from Acceleration Time

Calculate PA pressure using pulmonary artery Doppler acceleration time.

PA Acceleration Time (msec):

Estimated PA Pressure:  

Methods

Doppler interrogation of the pulmonary artery was performed in the parasternal short axis view, with the pulsed-wave sample volume placed at the annulus of the pulmonary valve. The acceleration time was defined as the interval between the onset of systolic pulmonary arterial flow and peak flow velocity.

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Pulmonary Artery Acceleration Time Provides an Accurate Estimate of Systolic Pulmonary Arterial Pressure during Transthoracic Echocardiography.
Yared K, Noseworthy P, Weyman AE, McCabe E, Picard MH, Baggish AL.
J Am Soc Echocardiogr. 2011 Jun;24(6):687-92.