Improvement of Ejection Fraction Aft er Coronary Artery Bypass Graft ing Surgery in Patients with Impaired Left Ventricular Function

Objectives: Th e present study evaluates our experience with aorto-coronary bypass grafting in patients with severe dysfunction of left ventricle (LV) and low ejection fraction-EF(<35%). Revascularization of myocardium in this settings remains contraversial because of concerns over morbidity, mortality and quality of life. Material and Methodes: Forty patients with severe coronary artery disease and dysfunction of LV (low ejection fraction <35%) underwent coronary artery bypass grafting in period of 3 years. Preoperative diagnostic of 40 patients was consisted of anamnesis, clinical exam, non-invasive methods EHO, MR and invasive diagnostic methods- cateterization. Th e major indication for surgery was severe anginal pain, heart failure symptoms and low ejection fraction. Internal mammary artery was used in all operated patients. Results: Average age of patients who have been operated was 59,8. In the present study, 81,3 % were male and 18,8 % female. We found one-vessel disease present in 2,5 % (1/40) of patients, two-vessel disease in 40 % (16/40), three-vessel disease in 42,5 % (17/40) and four-vessel disease in 15 % (6/40) of patients. One bypass grafting we implanted in 2,5 % patients, two bypasses in 42,5 % , three bypasses in 45 5%, and four bypasses in 10 % of patients. Left ventricular ejection fraction assessed preoperativly was 18%-27% and postoperatively was improved to 31, 08 % in period of 30 days. Conclusion: In patients with left ventricular dysfunction, coronary artery bypass grafting can be performed safely with improvement in quality of life and in left ventricular ejection fraction