Table 2. Echocardiographic measurements before and after coronary artery bypass grafting in the study population as a whole and in the subgroups of patients with normal and decreased pre-operative left ventricular ejection fraction.
| Variables | All patients, n=375 | LVEF ≥50%, n=203 | LVEF <50%, n=172 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pre-CABG | Post-CABG | P value | Pre-CABG | Post-CABG | P value | Pre-CABG | Post-CABG | P value | |||
| LVEF, % | 49±13 | 49±12 | 0.51 | 59±5 | 56±8 | <0.001 | 36±9 | 41±12 | <0.001 | ||
| LVIDd, cm | 5.4±0.8 | 5.3±0.9 | 0.002 | 5.1±0.7 | 4.9±0.7 | 0.02 | 5.8±0.8 | 5.7±0.9 | 0.03 | ||
| LVIDs, cm | 4.0±1.0 | 3.9±1.0 | 0.43 | 3.4±0.6 | 3.4±0.7 | 0.81 | 4.6±0.9 | 4.6±0.9 | 0.39 | ||
| LAD, cm | 4.4±0.7 | 4.6±0.7 | <0.001 | 4.3±0.7 | 4.6±0.8 | <0.001 | 4.5±0.7 | 4.7±0.7 | <0.001 | ||
| LV mass, g | 273±83 | 265±84 | 0.11 | 249±68 | 240±65 | 0.17 | 300±91 | 293±95 | 0.36 | ||
| PWT, cm | 1.2±0.2 | 1.2±0.2 | 0.58 | 1.2±0.2 | 1.2±0.2 | 0.81 | 1.2±0.2 | 1.2±0.2 | 0.32 | ||
| SWT, cm | 1.2±0.3 | 1.2±0.2 | 0.70 | 1.2±0.2 | 1.2±0.2 | 0.85 | 1.2±0.2 | 1.2±0.3 | 0.72 | ||
CABG, coronary artery bypass grafting; LAD, left atrial diameter; LVEF, left ventricular ejection fraction; LVIDd, left ventricular internal diameter during end-diastole; LVIDs, left ventricular internal diameter during end-systole; PWT, posterior wall thickness; SWT, septal wall thickness. Values presented as mean ± standard deviation.