Dose Impaired Relaxation of Left Ventricle Affect Early Outcomes in CABG Patients?

Although systolic dysfunction is revealed as a prognostic factor in cardiac surgery , the role of diastolic dysfunction as a predictive factor is less evaluated. in this retrospective study from 872 patients that underwent isolated coronary artery bypass graft(jan 2008-feb 2009),388 patients had normal left ventricular ejection fraction (>50%). these are divided in two groups, group 1: 361 patients without diastolic dysfunction (impaired relaxation) and group 2: 27 patients with diastolic dysfunction ( impaired relaxation). mean age in group 1 was 57.72 year and in group 2 was 61.16 year (p =0.07). risk factors such as diabetes mellitus, hypertention and dyslipidemia were similar. although overall complication rate was higher in group 2( 11.1% vs 2.8% p value 0.05),but when each complication was studied individually no significant statistical difference was found. also no significant statistical difference was found in mortality (2.2% in group 1 vs 7.4% in group 2 p =0.1). in conclusion, from clinical standpoint diastolic dysfunction can be an important factor in assessing surgical outcome in patients whom underwent coronary artery bypass grafting.