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Ejection Fraction
Sir ,
On 26 May i underwent Echocardiogram. Echo Report attached herewith.
I have a confusion. In the report the Ejection Fraction is 57%. But when i searched online the formula to calculate EJECTION FRACTION is:-
EF=(EDV-ESV)/EDV x 100
When i apply the respective values of EDV n ESV mentioned in the attached echo report in the formula then is get the EF-53%(calculation below)
EF= (103-48)/103 = 0.533 x 100 = 53.3%
I went to radiologist and raised the same question. He told me that we don't calculate the Ejection Fraction manually and the mentioned figure of EF=57% is automatically calculated by AI of the Colour Droppler Sonography machine. He also told me that the Heart Rate(92 BPM) also plays an important role in calculating the EF through.
Sir, Now my question does HR(92) play any role in calculating EF? And does today's Echocardiogram machine ( GE Electric) automatically calculate EF? Does EF varies from Lab to Lab?
Answers (1)
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Hi, you have a genuine question and I am happy to see patients so much alert about their findings.
EF can be calculated by various methods.
The formula you have mentioned is the actual mathematical method of calculating EF
But the machine has other programming where it can calculate EF by 3D method or by Simpson’s method.
Many a times an Birds Eye view is also utilised to give a subjective estimation of EF.
So I would suggest Thant 57% is your actual one bcz the Volumes are calculated by echo is by using various frames and in a dynamic organ like heart which is continuously contracting, these methods are not very precise.
Also the volumes depend on Heart rate , volume status of your body, breathing etc.
57% is the most accurate one
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Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.