30% heart functioning, severe lv dysfuntion, diabetic, hypertension, 54yrs old, highrisk cabg suggested, wht can be the success rate?

Surgery: There is no clear cut answer. Only the cardiovascular surgeon that is involved in your care might give an estimate based on his/her experience. If you had a cath that suggested triple vessel disease, or anatomy not otherwise amenable to stenting, and CABG is offered, would suggest that you take it, since that can add many years of better quality life.