Background hemodynamic parameters and clinical characteristics in the normal and increased OEF groups
| Normal OEF (n = 9) | Increased OEF (n = 4) | |
|---|---|---|
| Hemoglobin (g/dL) | 13.5 ± 1.6 | 11.8 ± 0.5 |
| O2 content (mL/dL) | 17.8 ± 2.5 | 15.6 ± 0.9 |
| Mean blood pressure (mm Hg) | 93.7 ± 10.1 | 89.2 ± 5.7 |
| PaCO2 during C15O2 inhalation (mm Hg) | 39.6 ± 2.3 | 40.0 ± 1.8 |
| PaCO2 during 15O2 inhalation (mm Hg) | 39.9 ± 2.8 | 40.9 ± 2.2 |
| Age (mean ± SD) (yr) | 55.8 ± 11.6 | 61.8 ± 5.9 |
| Sex (male/female) (No.)* | 9/0 | 1/3 |
| Symptomatic (No.) | 5 | 3 |
| Hypertension (No.) | 6 | 4 |
| Diabetes mellitus (No.) | 2 | 0 |
Note:—OEF indicates oxygen extraction traction; PaCO2, partial pressure of carbon dioxide.
* P < .05.