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    Confused about ejection fractions
    avatar
    Samanthasue posted:
    Hi there,

    My husband had an echo last October and his ejection fraction was 40-49%. In November he had 4 stents put in and his echo in January - 3 months after his last one - showed his ejection fraction was 30-39%. I can't figure out why his ejection fraction was LOWER after the stents were put in. The tests showed no narrowing of the arteries and that the blood flow was good. So why was it lower?

    Thanks,
    Sue
    Reply
     
    avatar
    cardiostarusa1 responded:
    Hi:

    General info

    Understanding Your Ejection Fraction

    http://my.clevelandclinic.org/heart/disorders/heartfailure/ejectionfraction.aspx
    Heart function may/can decrease/deteriorate at any time, for whatever reason. Also, as reported, left ventricular ejection fraction (LVEF) can vary throughout the day, and can vary from one type of diagnostic imaging test/modality to another, such as non-invasive echocardiogram, **MUGA scan/ERNA (reported as being the most accurate of the non-invasive methods, yields reproducible results), gated-SPECT scan with Cardiolite or Myoview (common nuclear stress test), Cardiac PET, Cardiac MR/MRI, and invasive X-ray angiography (heart catheterization).

    **To get a decent estimate of LVEF, a MUGA scan is reported as being the most accurate of the non-invasive methods.

    Pertinent excerpt from an About. com article - Richard N. Fogoros, M.D.

    When is the MUGA scan more useful than other heart tests?

    The advantages of the MUGA scan over other techniques (such as the echocardiogram) for measuring the LVEF are twofold
    . First, the MUGA ejection fraction is highly accurate, probably more accurate than that obtained by any other technique. Second, The MUGA ejection fraction is highly reproducible. That is, if the LVEF measurement is repeated several times, nearly the same answer is always obtained. (With other tests, variations in the measured LVEF are much greater.)

    Best of luck to your husband and you down the road of life.

    Take care,

    CardioStar*

    WebMD member (since 8/99)

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    - Charles Inlander, People's Medical Society

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    WebMD/WebMD forums does not provide medical advice, diagnosis or treatment.


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