I'm an 85year old male with Heart Disease Afib and now Brest Cancer. At the moment I'm on Tamoxifen to shrink the lump it appears to be working, be on it about 7 Months. There was some concern about surgery because of my age and low heart rate but that's been cleared by the Cardiologist who says just stop the Bisoprolol before surgery. So the surgery option is still open.