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Heart works at 70%

I recently had a nuclear stress done. I did the treadmill and survived it. Anyway, when I asked my primary care doctor for the results. She left the room to see it on her computer. She returned saying my heart works at 70% and that is good. That does not sound good to me. What does she mean when she says that?
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Avatar universal
Thank you...I was ignorant of the EF. I love leanring something new,.
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212161 tn?1599427282
yeah thats a great ef i just did the test to mine was at 76 but i did not walk it i had the shot my bp was to high to walk it. wtg  enjoy having a good test .
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63984 tn?1385437939
Heart efficiency is measured by a percentage, called the EF (Ejection Fraction).  Between 50% and 65% is considered average, so it appears your heart is working quite efficiently.  
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