Table 4. Operative variables and early outcomes, per white blood cell count (≤11.0 x103/μL vs. >11.0 x103/μL).
| WBC count ≤11.0 x103/μL (n = 211) |
WBC count >11.0 x103/μL (n = 255) |
p Value | |
|---|---|---|---|
| Operative variables | |||
| Proximal reconstruction | |||
| Valve re-suspension | 188 (89.1%) | 235 (92.2%) | 0.26 |
| Modified Bentall procedure | 13 (6.2%) | 7 (2.6%) | 0.070 |
| Valve-conserving root surgery | 1 (0.5%) | 2 (0.8%) | 1.0 |
| Isolated aortic valve replacement | 9 (4.3%) | 11 (4.3%) | 0.98 |
| Distal extent of aortic resection | |||
| Ascending aorta/hemiarch | 169 (80.1%) | 193 (75.7%) | 0.26 |
| Aortic arch | 42 (19.9%) | 62 (24.3%) | 0.26 |
| Open stent insertion | 5 (2.4%) | 13 (5.1%) | 0.13 |
| Coronary artery bypass grafting | 14 (6.6%) | 20 (7.8%) | 0.62 |
| Resection of primary entry site | 156 (73.9%) | 180 (70.2%) | 0.47 |
| Operation time (minutes) | 310 (249, 391) | 329 (270, 431) | 0.024 |
| CPB time (minutes) | 135 (111, 182) | 138 (116, 201) | 0.14 |
| Myocardial ischemia time (minutes) | 91 (75, 119) | 95 (78, 129) | 0.10 |
| Blood loss (mL) | 905 (565, 1527) | 860 (560, 1400) | 0.98 |
| Lowest body temperature (°C) | 20.0 (19.4, 23.7) | 20.3 (19.7, 23.9) | 0.87 |
| Early outcomes | |||
| Death within 30 days of surgery | 21 (10.0%) | 14 (5.5%) | 0.069 |
| In-hospital death | 23 (10.9%) | 19 (7.5%) | 0.19 |
| Length of hospital stay (days) | 7.2±8.0 | 8.3±7.3 | 0.14 |
| Complications | |||
| New-onset postoperative stroke | 15 (7.2%) | 26 (10.2%) | 0.25 |
| Prolonged ventilation (>48 hours) | 102 (48.3%) | 133 (52.2%) | 0.41 |
| Re-exploration for bleeding | 12 (5.7%) | 7 (2.7%) | 0.11 |
| Mediastinitis | 2 (0.9%) | 5 (2.0%) | 0.61 |
| Renal replacement therapy | 17 (8.1%) | 30 (11.8%) | 0.19 |
Data are shown as mean±standard deviation, median (interquartile range) values, or number (percentage) of patients.
WBC, white blood cell; CPB, cardiopulmonary bypass.