Echo basics: Parasternal Views

Echocardiography Views

Patient position coupled with probe placement and orientation for optimal parasternal long-axis (PLAX) and parasternal short-axis (PSAX) views. See next post for apical and subcostal views

PARASTERNAL LONG-AXIS (PLAX) VIEWS – Obtaining an optimal image
  • Patient position: lying on left side, left arm raised, raise the back of the bed or use pillows under the left shoulder
  • Probe position: 4th intercostal space, left sternal edge
  • Probe orientation: notch towards patient’s right shoulder
Echo PLAX inflow view
Parasternal optimal image

PARASTERNAL LONG-AXIS (PLAX) VIEWS – PLAX inflow view
  • Patient position: lying on left side, left arm raised, raise the back of the bed or use pillows under the left shoulder
  • Probe position: 4th intercostal space, left sternal edge
  • Probe orientation: notch towards patient’s right shoulder
Echo PLAX inflow view
PLAX inflow view

PARASTERNAL LONG-AXIS (PLAX) VIEWS – PLAX outflow view
  • Patient position: lying on left side, left arm raised, raise the back of the bed or use pillows under the left shoulder
  • Probe position: 4th intercostal space, left sternal edge
  • Probe orientation: notch towards patient’s right shoulder
Echo PLAX outflow view
PLAX outflow view

PARASTERNAL SHORT-AXIS (PSAX) VIEWS – PSAX aortic valve view
  • Patient position: lying on left side, left arm raised, raise the back of the bed or use pillows under the left shoulder
  • Probe position: 4th intercostal space, left sternal edge
  • Probe orientation: notch towards patient’s left shoulder
Echo PSAX mitral valve view

Tilt probe upwards towards head to show aorta as a circle.

PSAX aortic valve view

PARASTERNAL SHORT-AXIS (PSAX) VIEWS – PSAX mitral valve view
  • Patient position: lying on left side, left arm raised, raise the back of the bed or use pillows under the left shoulder
  • Probe position: 4th intercostal space, left sternal edge
  • Probe orientation: notch towards patient’s left shoulder
Echo PSAX mitral valve view

Tilt probe downwards towards spine to show left ventricle as a perfect circle.

PSAX mitral valve view

PARASTERNAL SHORT-AXIS (PSAX) VIEWS – PSAX papillary muscle view
  • Patient position: lying on left side, left arm raised, raise the back of the bed or use pillows under the left shoulder
  • Probe position: 4th intercostal space, left sternal edge
  • Probe orientation: notch towards patient’s left shoulder
Echo PSAX papillary muscle view

Tilt the probe even further towards the spine keeping the left ventricle as a circle but showing the papillary muscles instead of the mitral valve.

PSAX papillary muscle view

This is an edited excerpt from the Medmastery course Echocardiography Essentials by Helen Rimington, PhD. Acknowledgement and attribution to Medmastery for providing course transcripts.

Additional echocardiography resources:

Radiology Library: Echocardiography basics

Further reading

Echocardiography Essentials

Photo of Helen Rimington, PhD - smiling brunette with her hair pulled back. Grey textured background wall.

Helen is a Consultant Cardiac Physiologist at Guy’s and St Thomas’ NHS Trust, in London (UK). She's also a co-author of Echocardiography: A Practical Guide for Reporting. | Medmastery

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