Table 4.
Perioperative and early postoperative characteristics of the patients stratified by NLR quartiles.
| Characteristics | Overall | Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | P-value |
|---|---|---|---|---|---|---|
| n=751 | n=189 | n=188 | n=187 | n=187 | ||
| 0.17-1.83 | 1.84-2.47 | 2.48-3.23 | ≥ 3.24 | |||
| Operative data | ||||||
| Number of distal anastomoses | 3.41±0.88 | 3.40±0.86 | 3.29±0.86 | 3.48±0.88 | 3.47±0.92 | 0.24 |
| Incomplete revascularization | 136 (18.1) | 31 (16.4) | 38 (20.2) | 34 (18.2) | 33 (17.6) | 0.81 |
| Number of grafted LAD | 1.65±0.55 | 1.66±0.5 | 1.63±0.58 | 1.65±0.56 | 1.67±0.56 | 0.48 |
| Number of grafted Cx | 0.99±0.65 | 0.97±0.57 | 0.96±0.67 | 1±0.69 | 1.03±0.65 | 0.64 |
| Number of grafted RCA | 0.75±0.53 | 0.75±0.54 | 0.68±0.5 | 0.8±0.56 | 0.76±0.51 | 0.23 |
| Endarterectomy | 69 (9.2) | 20 (10.6) | 15 (8) | 18 (9.6) | 16 (8.6) | 0.82 |
| CPB time | 87.83±26.5 | 87.45±26.68 | 85.92±30.57 | 85.1±21.55 | 94.52±26.47 | 0.76 |
| Postoperative data | ||||||
| Hospital stay (days) | 5.84±2.71 | 5.70±1.59 | 5.83±2.79 | 5.62±1.94 | 6.22±3.91 | 0.21 |
| Prolonged mechanical ventilation time | 19 (2.5) | 2 (1.1) | 3 (1.6) | 4 (2.1) | 10 (5.3) | 0.038* |
| Intensive care unit stay (h) | 22.8±45.81 | 19.15±6.45 | 22.02±25.25 | 20.55±16.79 | 29.54±86.21 | 0.007* |
| Drainage (ml/24 h) | 511.63±298.83 | 508.65±304.34 | 500±252.55 | 496.9±308.31 | 544.71±330.99 | 0.7 |
| Blood transfusion (unit) | 1.35±1.54 | 1.24±1.39 | 1.23±1.58 | 1.25±1.42 | 1.69±1.71 | 0.002* |
| cTnI (ng/ml) | 2.48±2.99 | 2.02±2.13 | 2.33±2.92 | 2.6±3.52 | 2.89±3.16 | 0.09 |
| Perioperative inotropic support | 42 (5.6) | 7 (3.7) | 9 (4.8) | 8 (4.3) | 18 (9.6) | 0.048* |
| Perioperative IABP | 7 (0.9) | 1 (0.5) | 2 (1.1) | 1 (0.5) | 3 (1.6) | 0.65 |
| Perioperative NSTEMI | 62 (8.3) | 20 (10.6) | 14 (7.4) | 15 (8) | 16 (8.6) | 0.72 |
| Early STEMI (<30 days) | 6 | 1 (0.5) | 0 | 1 (0.5) | 4 (2.1) | 0.1 |
| Perioperative AF | 94 (12.5) | 16 (8.5) | 27 (14.4) | 24 (12.8) | 27 (14.4) | 0.25 |
| Perioperative renal failure | 103 (13.7) | 25 (13.2) | 20 (10.6) | 29 (15.5) | 29 (15.5) | 0.46 |
| Pulmonary complication | 21 (2.8) | 4 (2.1) | 6 (3.1) | 3 (1.6) | 8 (4.3) | 0.4 |
| Reintubation/NIMV | 11 (1.4) | 1 (0.5) | 3 (1.6) | 0 | 7 (3.7) | 0.013* |
| Neurological complication | 52 (6.9) | 14 (7.4) | 9 (8.4) | 13 (7) | 16 (8.4) | 0.53 |
| Encephalopathy | 22 (2.9) | 4 (2.1) | 6 (3.2) | 4 (2.1) | 8 (4.3) | 0.55 |
| TIA | 28 (3.7) | 11 (5.8) | 3 (1.6) | 8 (4.3) | 6 (3.2) | 0.17 |
| Stroke | 5 (0.7) | 0 | 0 | 1 (0.5) | 4 (2.1) | 0.034* |
| Mediastinitis | 5 (0.7) | 1 (0.5) | 0 | 2 (1.1) | 2 (1.1) | 0.16 |
| Early reoperation | 12 (2.3) | 4 (2.1) | 3 (1.6) | 2 (1.1) | 3 (1.6) | 0.49 |
| Early reoperation due to bleeding | 10 (1.3) | 3 (1.6) | 3 (1.6) | 2 (1.1) | 2 (1.1) | 0.94 |
| Early rehospitalisation (<30 days) | 48 (6.4) | 15 (7.9) | 6 (3.2) | 14 (7.5) | 13 (7) | 0.06 |
| Mortality (<30 days) | 8 (1.1) | 1 (0.5) | 1 (0.5) | 0 | 6 (3.2) | 0.011* |
| MACCE (<30 days) | 19 (2.5) | 4 (2.1) | 2 (1.1) | 4 (2.1) | 9 (4.8) | 0.12 |
*
Statistically significant difference. Values are presented as mean ± standard deviation or number (%), where appropriate. AF=atrial fibrillation; CPB=cardiopulmonary bypass; Cx=circumflex coronary artery; cTnI=cardiac troponin I; FFP=fresh frozen plasma; IABP=intra-aortic balloon pump; LAD=left anterior descending coronary artery; LIMA=left internal mammary artery; MACCE=major adverse cardiac and cerebrovascular event; MI=myocardial infarction; NIMV=non-invasive mechanical ventilation; NSTEMI=non-ST elevation myocardial infarction; RCA=right coronary artery; STEMI= ST elevation myocardial infarction; TIA=transient ischemic attack