Table 1.
Participant Characteristics and Surgical Procedures (n=20)
| Characteristic | No. of participants* |
| Sex | |
| Male | 18 |
| Female | 2 |
| Mean (SD) age, y | 61.3 (10.2) |
| Mean (SD) height, m | 1.7 (0.2) |
| Mean (SD) mass, kg | 82.9 (12.7) |
| Mean (SD) BMI, kg/m2 | 29.0 (7.4) |
| Mean (SD) postoperative time of testing, d | 7.4 (3.7) |
| Mean (SD) length of stay, d | 7.7 (3.7) |
| Left ventricular ejection fraction | |
| Grade 1, >50% | 13 |
| Grade 2, 40%–49% | 3 |
| Grade 3, 30%–39% | 2 |
| Grade 4, 20%–29% | 1 |
| Unknown | 1 |
| Surgical procedure | |
| Coronary artery bypass graft surgery | 13 |
| Aortic valve repair | 6 |
| Mitral valve replacement | 1 |
| Other procedures | 4 |
*
Unless otherwise indicated.