Defaults: 1X 2X 3X 4X      
E-Echo will be cotinuing to be available after this year! A new company is taking over.
Shunt Equation
LVOT (cm): cm
AV VTI (cm)   cm
RVOT (cm): cm
PV VTI (cm) cm
Aortic SV: mls
Pulmonic SV: mls
Shunt SV: mls
Qp/Qs %

How to get a Shunt Fraction (Qp/Qs).
Step 1: Measure the LVOT diameter in centimeters. The optimal view is a maximally zoomed view of the midesophageal AVLAX. The gain and compress should be set so the endomyocardial wall of the LVOT is clearly discernable. Freeze the display and use the trackball to cycle thru the cardiac cycle to the mid-ejection period when the LVOT is at it's maximal diameter. Using the calipers, measure from intimal wall to intimal wall just proximal to the aortic valve.
Step 2: Obtain a continuous wave doppler of the aortic valve. The optimal view is the deep transgastric AVLAX view or the transgastric AVLAX view. The former view is preferable if obtainable. Once the view is obtained turn on the CWD and use the track ball to move the CWD line to the aortic valve. A doppler profile of the aortic valve should be displayed. Using the tracing feature, use the trackball and trace the doppler profile.  An AV VTI should be calculated.
Step 3: Obtain a RVOT Diameter. The RVIO view is useful for measuring the RVOT diameter.  Under zoomed conditions, use the trackball-calipers function to measure the RVOT diameter.
Step 4:  Obtain a CWD of the Pulmonary Valve. The SAX view of the aortic arch will show the pulmonary valve in long axis view with a good angle for CWD mode.  After the CWD is done, trace the flow profile of the pulmonary valve and a VTI will be calculated.

Previous Page
Next Page
Instution Info  
User Info  
CME Info  
User License  
Privacy Policy  
CME Sponsor: University of Nebraska Medical Center - Center for Continuing Education This activity has been planned and implemented in accordance with the accreditation requirements and policies of the Accreditation Council for Continuing Medical Education through the joint providership of University of Nebraska Medical Center, Center for Continuing Education and JLS Interactive, LLC.
The University of Nebraska Medical Center, Center for Continuing Education is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.

CE Sponsor: American Society of Radiological Technologists (ASRT)This activity is approved by the American Society of Radiologic Technologists (ASRT) as sonography-related continuing education (CE). Credit(s) issued for successful completion of ASRT-approved CE activities are accepted by the American Registry of Diagnostic Medical Sonography, American Registry of Radiological Technologists, Cardiovascular Credentialing International and Canadian Association of Registered Diagnostic Ultrasound Professionals. Contact the applicable registry for additional information / restrictions on their acceptance of ASRT CE credit.
Copyright Statement
© Copyright 2000-2022 JLS Interactive, LLC.
Content from this web site may not be used or reproduced for non-personal or
commercial purposes without express written permission by JLS Interactive, LLC.