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An_253506 posted:
My friend had a heart attack they told him only 35% off his heart is all thats working how much the the normal heart work, thanks Jeff
cardiostarusa1 responded:
Hi Jeff:

"they told him only 35% off his heart is all that's working"

When doctors use a % as it pertains to the heart function this typically refers to the left ventricular ejection fraction (LVEF), the amount of blood that is forced out of the left ventricle (LV) with each beat, the single-most important clinical indicator of how well the heart is pumping. LVEF can vary from one type of diagnostic imaging modality to another.

Some individuals who have a low (moderate) or a really low (severe) left ventricular ejection fraction (LVEF) feel fine and function well, while others do not.

As applicable, in some cases, along with a doctor recommended/authorized exercise regimen (unless contraindicated), LVEF can be increased, sometimes substantially, by customizing/tweaking prescription drug-therapy (e.g., Coreg, which showed, back in its clinical trial days, that it could boost LVEF in some individuals) and supplemental (complimentary or integrative medicine) therapy, as deemed applicable.

Just one example of complimentary medicine is the use of the supplement Coenzyme Q10 (CoQ10 or ubiquinone, a vitamin-like substance) for heart failure (though currently not scientifically proven, some doctors may advise the patient to give it a try) which may/can (i.e., along with doctor directed prescription drug-therapy, and with the doctor knowing about any supplements being taken) help to improve LVEF in some, with other supplements sometimes added to the mix.

"how much the the normal heart work?"

Cleveland Clinic

Understanding Your Ejection Fraction

Best of luck to your friend down the road of life.

Take care,


WebMD member (since 8/99)



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Heart Failure: Living with Heart Failure

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Heart Failure Stages

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The Heart: (Human Anatomy) Pictures, Definition, Location in the Body and Heart Problems

How the Heart Pumps

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James Beckerman, MD, FACC responded:
The number 35% refers to the "ejection fraction" - which is the percentage of the contents of the heart's major pumping chamber, the left ventricle, that are "ejected" from the heart with each heart beat. Normal is a range of about 55% to 75%.
tbf524 replied to James Beckerman, MD, FACC's response:
In January, my infraction rate was 8% and on August 22nd it had improved to 12-15 % range. I feel great and work heavy manual labor. (My own stone and block business). I will be getting a Pacemaker on the 23rd of this month.
cardiostarusa1 replied to tbf524's response:

Thanks for posting.

As mentioned previously: Some individuals who have a low (moderate) or a really low (severe) left ventricular ejection fraction (LVEF) feel fine and function well, while others do not.

My father, when he was in his mid 80s, had an LVEF of 15%-18% and was still active, productive (worked full-time, then part-time) and independent.

Take care,


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