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Table 5 Univariate analysis of predictors for left ventricular ejection fraction improvement after CABG

From: Comparison of cardiovascular magnetic resonance of late gadolinium enhancement and diastolic wall thickness to predict recovery of left ventricular function after coronary artery bypass surgery

Parameters Left Ventricular Ejection Fraction Improvement P value
  Yes (N = 22) No (N = 22)  
Male (%) 21 (95.5) 20 (90.9) 0.550
Age (years) 59.4 ± 8.8 61.1 ± 9.9 0.566
NYHA class 2.82 ± 0.4 2.23 ± 0.53 < 0.001
History of MI (%) 14 (63.6) 16 (72.7) 0.517
Q wave from ECG (%) 8 (36.4) 11 (50) 0.361
Number of diseased vessels 3.7 ± 0.8 3.2 ± 0.9 0.075
Number of grafts 3.7 ± 0.8 3.3 ± 0.8 0.130
LVDD (mm) 59.7 ± 7.2 62.9 ± 9.1 0.203
LVSD (mm) 49.2 ± 8.8 52.8 ± 11.2 0.245
LVEDV (ml) 174.1 ± 53.4 191.5 ± 65.1 0.338
LVESV (ml) 109 ± 54.7 129.9 ± 64.6 0.254
Baseline LVEF (%) 40.2 ± 12.9 35.5 ± 13.2 0.244
Average LGE area (%) 32.9 ± 20 43.3 ± 18.6 0.008
Average EDWT (mm) 5.59 ± 1.5 5.58 ± 1 0.978
Percent of segments with wall thinning*,** 37.1 ± 19.8 46.8 ± 19.1 0.110
Percent of segments with LGE area* 51.4 ± 24.6 59.8 ± 24.1 0.264
Percent of segments with wall motion improvement (%)* 62.1 ± 22.4 20.5 ± 10.4 < 0.001
  1. LVDD = left ventricular diastolic diameter, LVDS = left ventricular systolic diameter, LVEDV = left ventricular end-diastolic volume, LVESV = left ventricular end-systolic volume, LVSV = left ventricular stroke volume, LVEF = left ventricular ejection fraction, MI = myocardial infarction, NYHA = New York Heart Association, LGE late gadolinium enhancement
  2. * Percent of segments = number of segment with feature divided by total analyzable segments
  3. **wall thinning = EDWT < 5.5 mm