Table 1.
Baseline Characteristics and Risk Factors
| Characteristics | All Patients (n = 5,496) | Preoperative MCS (n = 129) | Intra/Postop MCS (n = 279) | No MCS (n = 5,088) | p Valuea |
|---|---|---|---|---|---|
| Age, years, median (IQR) | 66.0 (58.0–74.0) | 64.0 (57.0–71.0) | 62.0 (54.0–70.0) | 66.0 (58.0–74.0) | <0.0001 |
| Sex | |||||
| Male | 3,939 (71.7) | 87 (67.4) | 205 (73.5) | 3,647 (71.7) | 0.4518 |
| Female | 1,553 (28.3) | 42 (32.6) | 74 (26.5) | 1,437 (28.2) | |
| Current smoker | 1,793 (32.6) | 43 (33.3) | 97 (34.8) | 1,653 (32.5) | 0.7368 |
| Diabetes mellitus | 2,252 (41.0) | 59 (45.7) | 92 (33.0) | 2,101 (41.3) | 0.0121 |
| Dyslipidemia | 4,013 (73.0) | 95 (73.6) | 179 (64.2) | 3,739 (73.5) | 0.0027 |
| Renal failure on dialysis | 196 (3.6) | 3 (2.3) | 5 (1.8) | 188 (3.7) | 0.1826 |
| Lung disease | |||||
| Mild | 571 (10.4) | 7 (5.4) | 17 (6.1) | 547 (10.8) | 0.0009 |
| Moderate | 344 (6.3) | 7 (5.4) | 7 (2.5) | 330 (6.5) | |
| Severe | 299 (5.4) | 7 (5.4) | 9 (3.2) | 283 (5.6) | |
| Liver disease | 181 (3.3) | 3 (2.3) | 7 (2.5) | 171 (3.4) | 0.6299 |
| Peripheral arterial disease | 909 (16.5) | 26 (20.2) | 33 (11.8) | 850 (16.7) | 0.0542 |
| Prior CVA | 452 (8.2) | 13 (10.1) | 17 (6.1) | 422 (8.3) | 0.3157 |
| Previous cardiac intervention | 2,120 (38.6) | 68 (52.7) | 120 (43.0) | 1,932 (38.0) | 0.0009 |
| Previous CABG | 100 (1.8) | 5 (3.9) | 9 (3.2) | 86 (1.7) | 0.0368 |
| Previous PCI | 1,958 (35.6) | 59 (45.7) | 106 (38.0) | 1,793 (35.2) | 0.0347 |
a
From statistical tests of the null hypothesis that the distribution of the factor was the same across three groups.
Values are n (%) unless otherwise indicated.
CABG = coronary artery bypass graft surgery; CVA = cerebrovascular accident; Intra/Postop = intraoperative/postoperative; IQR = interquartile range; MCS = mechanical circulatory support; PCI = percutaneous coronary intervention.