RV outflow view

PLAX probe view.jpg

Tilt

Tilting the head of the transducer from the parasternal long axis so the ultrasound beam points up more helps evaluate pulmonic valve disease and the pulmonary artery. 

In this position the ultrasound beam (light blue) cuts the heart through the pulmonary artery and pulmonic valve. 

PA long axis.cut.jpg

This is how the view looks in a still frame and cartoon

PLAX.PA long axis label.jpg
PA long axis view.jpg

This is a video clip of an ideal view 

Doppler

In this view you will want to use color Doppler and PW/CW as needed to assess for pulmonic valve pathology as shown below. 

Diastole

PLAX PA diastole.JPG
PLAX PA systole.JPG

Systole

PW and CW Doppler will allow you to measure the RV outflow tract velocities and assess severity of pulmonic stenosis and insufficiency. 

PLAX PA PW above.JPG

PW Doppler

PLAX PA CW with label.JPG

CW Doppler

With CW Doppler the pulmonic insufficiency (PI) jet can help you estimate the pulmonary artery diastolic pressure (PAD) using 4V^2 plus the RA pressure. Here the velocity is 1m/s so it would be 4mmHg plus the RA pressure. The same can be done in the parasternal short axis view of this structure