Hello this is a suprise! Had a follow up echo this morning. My second one after having a double bypass graf back in July of this year due to having a heart attack. I ve been feeling pretty good considering. Working out four times a week by doing a brisk 45-60 minute walk, followed by a five minute light weight (5lb barbabell) to music routine. Anyway, my fist echo had my EF around 15-20% and today about the same. The discouraging part is I feel considerably better/stronger and was really bummed out when my EF hadn t improved. It s been about four and a half months since my CABG (July 8, 2011 to be exact) and I am a pretty discipline post op patient..but expected a lot more improvement in my EF numbers I guess....having no chest pain, shortness of breath, sleeping alright etc.