Nikki,
Don't worry too much about it. My ejection fraction started at 62% and dropped to 47% by the end of Herceptin. I just had mine done again and it's back up to 55-60%. the test can do 5% either way, so if it's dropped to 50 you can say it could be 55%. I always had muga's then last time i had a echocardiogram. I think the echo's are better and easier because you don't need the nucleur injection. Maybe ask if you can get a echo next time!!
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