My father (53 years) had surgery (CABG) in 2012 21st April. Recently He is suffering from Panting. Then we went hosp and they done 2d echo, ecg, etc. Later Results are here CAD: EVOLVED INFERIOR MI, CAG-TVD, POST CABG (21-4-12) SVG>LAD, FAIR LV FUNCTION, MODERATE LV DYSFUNCTION (12-02-14) MILD LV dysfunction N (17-06-15) MILD LV DYSFUNCTION, MODERATE AS 9-18-17, MODERATE LV DYSFUNCTION, MILD AS 4-4-18, SEVERE CALCIFIC AS, MILD LV DYSFUNCTION 30-7-18. Sir I want to know what is problem? And please tell me what to do now to rectify it, Can we clear it by through medicines, if not Is it Safe to do second time Surgery? Please reply full to my doubts. I am only son to him and I want to made him healthy? Please suggest me sir.