Table 3. Overall patient outcomes.
| Variable | Overall cohort (n=853) |
|---|---|
| 30-day mortality | 16 (1.9%) |
| ICU length of stay, days | 1 [1-1] |
| Prolonged ICU stay (3 days or more) | 89 (10.4%) |
| Assisted ventilation time, h | 6 [5-9] |
| Need for ventilation support <12 h | 709 (83.2%) |
| Prolonged ventilation support (>24 h) | 37 (4.3%) |
| Hospital length of stay, days | 6 [6-8] |
| Discharge by 6th postoperative day | 450 (52.8%) |
| Discharge after 9th postoperative day | 157 (18.4%) |
| Prolonged length of stay (>12 days) | 67 (7.9%) |
| Reopening for bleeding or cardiac tamponade | 37 (4.3%) |
| Blood products transfusion* | 182 (21.3%) |
| Blood transfusion pack per patient, unit* | 0 [0-0] |
| Perioperative acute myocardial infarction | 12 (1.4%) |
| Infective complications | 29 (3.4%) |
| Sepsis | 2 (0.2%) |
| Wound dehiscence or infection | 7 (0.82%) |
| Stroke | 15 (1.8%) |
| Transient ischemic attack | 11 (1.3%) |
| Pulmonary complications/respiratory dysfunction | 89 (10.4%) |
| Pneumonia | 11 (1.3%) |
| Pleural effusion requiring puncture | 32 (3.8%) |
| Perioperative acute kidney injury | 40 (4.7%) |
| New onset CVVH/hemofiltration support | 5 (0.6%) |
| Complete AV block requiring PM implant | 23 (2.7%) |
| New onset atrial fibrillation or flutter | 243 (28.5%) |
| Gastrointestinal complications | 11 (1.3%) |
| Composite event score** | 0 [0-0] |
| 0 | 715 (83.8%) |
| 1 | 91 (10.7%) |
| 2 | 31 (3.6%) |
| 3 | 10 (1.2%) |
| 4 | 5 (0.6%) |
| 5 | 1 (0.1%) |
*, during the surgery and ICU stay. **, composite event score included following complications: necessity for prolonged (over 24 h) mechanical ventilation support, reoperation for any cause, perioperative acute myocardial infarction, stroke, transient ischemic attack, new onset dialysis, multisystem failure, atrioventricular block with need of pacemaker implantation, cardiorespiratory arrest, need for percutaneous pericardial drainage, major arrhythmia, and death during the index hospitalization. AV, atrioventricular; CVVH, continuous veno-venous hemofiltration/hemodialysis; ICU, intensive care unit; PM, pacemaker.