Shunt Fraction (Echo)
About
The magnitude of an inra- or extracardiac shunt can be estimated by flow ratio between the pulmonary and systemic circulation (Qp/Qs) using echocardiography. It is important to remember that the systemic flow cannot be estimated using the LVOT if there is moderate to severe aortic insufficiency.
Consideration should be made to close shunts with flow rates > 1.5 if no contraindications exist.
References
Sanders SP et al.
Oh J, Seward JB, Tajik AJ.
Kern MJ.
By using this site you acknowledge that you have read, understand, and agree to be bound by our terms of use and privacy policy. All content and tools are for educational use only, are not meant to be a substitute for professional advice and should not be used for medical diagnosis and/or medical treatment.