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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Discrepancy Between EF% With Echo And MUGA?

I am a 59 year old female dx with dilated cardiomyopathy 6 years ago. I had symptoms for 5 years prior to this with misdiagnosis after seeing many doctors. I am on Coreg, Lanoxin, Vasotec, Aldactone, Provachol and aspirin with Lasix PRN along with various supplements as approved by my cardio. My ejection fraction via echo is 20 to 25 but with MUGA, it is 45%. I have remained somewhat stable for the last 5 years. My main symptom is fatigue. Why is there such a discrepancy between my EF% with the echo and the MUGA? And which one is more reliable???
Thanks, Faye
posted on Fri, 14 Mar 2014
Twitter Tue, 19 Aug 2014 Answered on
Twitter Tue, 19 Aug 2014 Last reviewed on
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Psychiatrist,  's  Response
HI,WELCOME TO HCM.
ECHOCARDIOGRAPHY is more reliable as far as estimation of ejection fraction is concerned,the fatigue in your case can be attributed to low ejection fraction.most patients can remain symptom free with low ejection fractions.monitor your blood pressure frequently on regular basis.drugs like Dopamine can increase the cardiac contractility and subsequent cardiac output.consult your cardiologist for further queries.
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What Causes Discrepancy Between EF% With Echo And MUGA?

HI,WELCOME TO HCM. ECHOCARDIOGRAPHY is more reliable as far as estimation of ejection fraction is concerned,the fatigue in your case can be attributed to low ejection fraction.most patients can remain symptom free with low ejection fractions.monitor your blood pressure frequently on regular basis.drugs like Dopamine can increase the cardiac contractility and subsequent cardiac output.consult your cardiologist for further queries. thank you