Suggest Remedy For Chest Pain While Undergoing EECP Treatment

Angiography revealed ~90% blockage in my RCA distal to SVG. My cardiologist feels it is risky to insert a stent in this situation. Rather he would treat me with Renexa and/or EECP. I opted for EECP for now because it worked ~2 years ago. Right now I am undergoing EECP. But I still seem to have attacks of angina even while resting. With little physical exertion or even stress, I feel terrible discomfort and go out of breadth. I would deeply appreciate a 2nd opinion. Thank you. C.P. Giri, Ph.D.