I'm not an expert in this
but my Onc. says that as long as the output it greater than 50% than you can stay on herceptin. If it drops below 50, then they'll stop the herceptin.
I was on herceptin alone from Oct 04 to Feb 05, then I had an echocardiogram (because the MUGAs were too much for me) and my ejection fraction (I think thats what its called) went from mid-60s to 49. She stopped the herceptin - I took NO heart meds - and just had an echocardiogram this morning and my ejection fraction came back up to normal on its own.
I'll start herceptin with Nevalbine on Friday.
Good luck
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