Table 4.
Comparison of the population profile, EuroSCORE, risk factors and postoperative complications of patients submitted to coronary artery bypass surgery from March to September 2012, according to the length of hospital stay - São Paulo, 2017.
| Variable | Duration | P | ||
|---|---|---|---|---|
| ≤ 7 days (n=416) | > 7 days (n=946) | |||
| Age (in years) (mean + SD) | 60.6 ± 8.6 | 61.8±8.9 | 0.018(1) | |
| Males (n, %) | 296 (71.2) | 656 (69.3) | 0.503(2) | |
| EuroSCORE > 5 (n, %) | 30 (7.2) | 72 (7.6) | 0.796(2) | |
| Risk factors (n, %) | Systemic arterial hypertension | 373 (89.7) | 859 (90.8) | 0.510(2) |
| Diabetes | 135 (32.5) | 406 (42.9) | <0.001(2) | |
| Dyslipidemia | 226 (54.3) | 522 (55.2) | 0.771(2) | |
| Chronic kidney failure | 9 (2.2) | 58 (6.1) | 0.002(2) | |
| Previous cerebrovascular accident | 13 (3.1) | 51 (5.4) | 0.069(2) | |
| Arrhythmia | 8 (1.9) | 26 (2.8) | 0.369(2) | |
| Prior/chronic atrial fibrillation | 4 (1.0) | 15 (1.6) | 0.366(2) | |
| Complication (n, %) | Transfusion | 140 (33.7) | 503 (53.2) | <0.001(2) |
| Atrial fibrillation requiring intervention | 24 (5.8) | 207 (21.9) | <0.001(2) | |
| Major bleeding | 43 (10.3) | 160 (16.9) | 0.002(2) | |
| Pneumonia | 0 (0.0) | 71 (7.5) | <0.001(2) | |
| Acute renal failure | 2 (0.5) | 43 (4.6) | <0.001(2) | |
| Perioperative acute myocardial infarction | 3 (0.7) | 24 (2.5) | 0.027(2) | |
| Dialysis | 0 (0.0) | 16 (1.7) | 0.005(3) | |
| Cerebrovascular accident | 0 (0.0) | 16 (1.7) | 0.005(3) | |
| Prolonged mechanical ventilation | 0 (0.0) | 16 (1.7) | 0.005(3) | |
| Reoperation for bleeding | 0 (0.0) | 6 (0.6) | 0.186(3) | |
| Reoperation for bleeding/mediastinitis | 0 (0.0) | 10 (1.1) | 0.037(3) | |
| Reoperation for mediastinitis | 0 (0.0) | 4 (0.4) | 0.320(3) | |
| Mediastinitis with clinical treatment | 0 (0.0) | 6 (0.6) | 0.186(3) | |
(1)
Descriptive probability level Student's t-test.
(2)
Descriptive probability level Chi-square test.
(3)
Descriptive probability level Fisher's exact test.