1: Measure the End-Systolic and End-Diastolic LV
EDA. The optimal view is the LVSA view from the
mid Transgastric acoustic window. The left
ventricular area should be traced in end-diastole
and end-systole. The difference of the the two,
divided by the left ventricular end-diastolic area
is the fractional area change. Note that the
fractional area change is NOT the ejection fraction.
Ejection fraction is based upon (extrapolated) volumes
whereas the FAC is based upon area. Therefore,
values of FAC will be less than the ejection fraction.
See below for a comparison.
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.
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.