• Color compare view of main and branch pulmonary arteries
  • Mild flow acceleration is noted starting in the proximal branch pulmonary arteries in a patient with mild bilateral PPS
  • Spectral pulse wave Doppler in the proximal right pulmonary artery 
  • Mild peripheral pulmonary stenosis (approximately 2 meters/sec)
  • Continuous wave spectral Doppler in the right pulmonary artery 
  • Mild peripheral pulmonary stenosis (~2.5 meters/sec)

The parasternal short axis is a good view to profile the size and flow pattern in the main and branch pulmonary arteries. 

  • Left sternal border
  • 3rd or 4th intercostal space
  • Notch pointing towards the left shoulder (1-2 o'clock)
  • Transducer tilted superiorly and medially
  • Pulmonary valve stenosis
  • Supravalvar pulmonary stenosis
  • Branch pulmonary artery stenosis