8 Years’ Experience in Repair of LV Aneurysm with CABG

Background- Over 95% of true left ventricular aneurysms result from coronary artery disease and myocardial infarction. The incidence of left ventricular aneurysm in patients suffering myocardial infarction has varied between 10-35%. Large left ventricular aneurysm can cause arrhythmias, congestive heart failure, recurrent myocardial infarction, thromboembolic events and sudden death and operation is indicated for symptomatic large left ventricular aneurysms. In this study we evaluated results of surgical repair of left ventricular aneurysms in association with coronary artery bypass graft. Methods- In this descriptive, cross-sectional study from September 1997 to March 2005, we had 1894 CABG operations. Concomitant left ventricular aneurysm repair was done in 54 cases. Surgical complications, clinical findings, left ventricular ejection fraction, NYHA classes, morbidity and mortality were evaluated. Results- NYHA classes were reduced from 3پ}0.7 preoperatively to 1.23پ}0.4 postoperatively (p<0.05), and left ventricular ejection fraction changed from 23.82پ}5.72% to 34.12پ}7.25% (p<0.05). Surgical complications were re-operation for bleeding in 4 cases (7.4%), sterna dehiscence in 1 case (1.8%) and intra-aortic balloon pump insertion for weaning of CPB in 8 cases (14.8%). Mean ICU stay was 3پ}1.1 days, mean hospital stay was 13پ}2.3 days; hospital mortality was 1 case (1.8%). During follow up (1-5 years with a mean of 1پ}04), all patients are alive, free from cardiac events and have good functional classes. Conclusion- Early and mid-term results of CABG with repair of left ventricular aneurysm are excellent with low morbidity and mortality, and we recommend CABG and repair of left ventricular aneurysm in case of large ventricular aneurysm (Iranian Heart Journal 2007; 8 (1): 38-42).