Table 1.
Baseline characteristics of the 37 subjects
| Group I | Group II | P value | |
|---|---|---|---|
| Number of subjects, N | 29 | 8 | |
| Age, yr | 47 ± 14 | 67 ± 7 | 0.0009 |
| Females, N (%) | 24 (83) | 6 (75) | 0.019 |
| Race, N | – | – | – |
| Caucasian | 16 | 6 | 0.132 |
| Hispanic | 7 | 0 | 0.352 |
| African-American | 5 | 2 | 0.435 |
| Creatinine, mg/dL | 0.98 ± 0.22 | 1.0 ± 0.13 | 0.81 |
| Body surface area, m2 | 1.98 ± 0.24 | 1.94 ± 0.29 | 0.73 |
| Body mass index, kg/m2 | 30 ± 12 | 32.5 ± 11 | 0.63 |
| Heart rate, beats.min−1 | 85 ± 13 | 75 ± 12 | 0.056 |
| Mean arterial pressure, mmHg | 86 ± 15 | 85 ± 9 | 0.76 |
| Mean pulmonary artery pressure, mmHg | 46 ± 13 | 42 ± 13 | 0.42 |
| Cardiac index, L/min/m2 | 2.68 ± 1.15 | 3.23 ± 0.92 | 0.204 |
| LVEF, % | 63 ± 5 | 56 ± 9 | 0.009 |
| MVO2, % | 63 ± 12 | 66 ± 13 | 0.598 |
Note: Values expressed as mean ± SD.
Abbreviations: LA, left atrium; LVEF, left ventricular ejection fraction; MVO2, mixed venous oxygen consumption.