Table 3.
Postoperative Outcomes of the Overall Patient Cohort and of Risk-Stratified Quartilesa
| Quartile | |||||
|---|---|---|---|---|---|
| Variableb | Overall (N = 654) | 1 (n = 164) | 2 (n = 164) | 3 (n = 163) | 4 (n = 163) |
| Operative mortality | 13 (2.0) | 0 (0) | 1 (0.6) | 1 (0.6) | 11 (6.7) |
| STS PROM, % | 2.0 (1.2–4.2) | 0.9 (0.7–1.2) | 1.6 (1.2–2.2) | 2.7 (1.9–4.0) | 6.4 (3.8–9.6) |
| Mean ± SD | 3.8 ± 5.4 | 1.0 ± 0.8 | 2.1 ± 1.9 | 3.4 ± 2.5 | 8.4 ± 8.5 |
| 1-year survival | 535/581 (92.1) | 143/145 (98.6) | 146/148 (98.6) | 131/145 (90.3) | 115/143 (80.4) |
| 7-year survival | 164/325 (50.5) | 63/68 (92.6) | 47/78 (60.3) | 37/82 (45.1) | 17/97 (17.5) |
| Hospital length of stay, d | 7.0 (5.0–9.0) | 6.0 (5.0–7.0) | 6.0 (5.0–7.0) | 7.0 (6.0–9.0) | 9.0 (6.0–14.0) |
| Postoperative complications | |||||
| Deep sternal wound infection | 6 (0.9) | 2 (1.2) | 2 (1.2) | 1 (0.6) | 1 (0.6) |
| Renal failure | 28 (4.3) | 3 (1.8) | 7 (4.3) | 5 (3.1) | 13 (8.0) |
| Stroke | 16 (2.4) | 0 (0) | 2 (1.2) | 5 (3.1) | 9 (5.5) |
| Any reoperation | 66 (10.1) | 11 (6.7) | 13 (7.9) | 13 (8.0) | 29 (17.8) |
| Prolonged ventilation | 106 (16.2) | 8 (4.9) | 18 (11.0) | 27 (16.6) | 53 (32.5) |
a
Data are based on American College of Cardiology Foundation-Society of Thoracic Surgeons (STS) Collaboration on the Comparative Effectiveness of Revascularization Strategy 7-year survival probability (quartile 1 is lowest risk).
b
Continuous data are shown as median (interquartile range), or as indicated, and categoric data as number (%).
PROM N predicted risk of mortality.