Table 1.
Clinical preoperative data of patients undergoing CABG with and without postoperative atrial fibrillation.
| Preoperative data | POAF (N=72) | No POAF (N=250) | p |
|---|---|---|---|
| Age (years) | 63±7 | 59±9 | 0.001 |
| Sex (% male) | 53 (74) | 178 (71) | 0.767 |
| NYHA class | 1.7±0.4 | 1.6±0.5 | 0.120 |
| NYHA class III–IV (%) | 22 (31) | 55 (22) | 0.158 |
| Congestive heart failure | 8 (11) | 12 (5) | 0.091 |
| Systolic arterial pressure (mmHg) | 142±16 | 137±15 | 0.015 |
| Diastolic arterial pressure (mmHg) | 87±11 | 84±10 | 0.029 |
| Fasting glycemia (mmol/l) | 6.2±2.1 | 5.7±1.8 | 0.046 |
| Tryglicerides (mmol/l) | 1.89±0.92 | 1.68±0.81 | 0.061 |
| Total cholesterol (mmol/l) | 6.3±1.95 | 5.4±1.72 | <0.001 |
| HDL (mmol/l) | 1.01±0.31 | 1.10±0.32 | 0.035 |
| eGFR (mL/min/1.73m2) | 54±8 | 68±10 | <0.001 |
| eGFR ≤30 mL/min/1.73m2 | 5 (7) | 13 (5) | 0.565 |
| WBC count (baseline, ×109/l) | 6.4±1.8 | 6.5±1.7 | 0.665 |
| BMI (kg/m2) | 28.1±3.4 | 25.6±2.9 | <0.001 |
| Hypertension (%) | 57 (79) | 150 (60) | 0.003 |
| Diabetes mellitus (%) | 31 (43) | 55 (22) | <0.001 |
| Hypertrygliceridemia (%) | 45 (63) | 130 (52) | 0.703 |
| Hypercholesterolemia (%) | 40 (56) | 93 (37) | 0.007 |
| Obesity (%) | 35 (49) | 80 (32) | 0.012 |
| Smoking (%) | 46 (66) | 125 (50) | 0.044 |
| Family history of CV diseases (%) | 58 (81) | 175 (70) | 0.099 |
| Chronic renal failure (%) | 2 (3) | 5 (2) | 0.655 |
| COPD (%) | 6 (8) | 10 (4) | 0.213 |
| Mild valvular heart disease (%) | 44 (61) | 162 (65) | 0.579 |
| Beta blockers (%) | 31 (43) | 145 (58) | 0.031 |
| Amiodarone (%) | 2 (3) | 8 (3) | 0.998 |
| ACE inhibitors (%) | 42 (58) | 156 (62) | 0.581 |
| Nitrates (%) | 55 (76) | 200 (80) | 0.513 |
| Calcium channel antagonist (%) | 6 (8) | 18 (7) | 0.799 |
| Diuretics (%) | 14 (20) | 45 (18) | 0.863 |
| Aspirin/thienopyridine (%) | 68 (95) | 240 (96) | 0.524 |
| Statins (%) | 25 (35) | 121 (48) | 0.044 |
| EF (%) | 52±10 | 54±11 | 0.167 |
| EF≤35% (%) | 4 (6) | 13 (5) | 0.994 |
| LA (cm) | 4.03±0.51 | 3.84±0.57 | 0.011 |
| LVEDD (cm) | 5.41±0.74 | 5.47±0.64 | 0.50 |
| LVESD (cm) | 3.97±0.84 | 3.93±0.77 | 0.704 |
| LV segmental kinetic disturbances (%) | 37 (51) | 50 (20) | <0.001 |
| Left main ≥50% coronary stenosis (%) | 24 (33) | 90 (36) | 0.78 |
| Three-vessel coronary artery disease (%) | 60 (83) | 185 (74) | 0.118 |
| Previous myocardial infarction (%) | 37 (51) | 126 (50) | 0.894 |
| Previous stroke (%) | 2 (3) | 5 (2) | 0.655 |
POAF – postoperative atrial fibrillation; NYHA – New York Heart Association; eGFR – glomerular filtration rate calculated by the Modification of Diet in Renal Disease formula; CV – cardiovascular; COPD – chronic obstructive pulmonary disease; EF – ejection fraction; LA – left atrium; LVEDD – left ventricle end-diastolic dimension; LVESD – left ventricle end-systolic dimension.