Aortic regurgitation assessment by Jet width / LVOT diameter
Echocardiography Textbook
The severity of aortic regurgitation can be assessed using the width of the regurgitation jet (on color Doppler) and its percentage to the diameter of the outflow tract of the left ventricle.
In the left parasternal position, the long axis of the heart, the width of the regurgitation flow is measured (1 cm distal to the aortic valve) and its percentage to the diameter of the outflow tract of the left ventricle is found.
Degree of the Aortic regurgitation by Jet width/LVOT diameter:
- Mild < 25 %
- Mild-Moderate 25-45 %
- Moderate-Severe 46-64 %
- Severe > 65 %
Left Parasternal View, the Long axis of LV, Color Doppler. Measurement of the regurgitation jet width. Simulation By Echocardiography Online Simulator MyEchocardiography.com
Left Parasternal View, Long axis of LV, Color Doppler. Measurement of the LVOT diameter. Simulation By Echocardiography Online Simulator MyEchocardiography.com
ASE Guideline for Noninvasive Evaluation of Native Valvular Regurgitation