Table 4.
Calculated ventilatory baroreflex (slopes), threshold, saturation, and response range using the modified Oxford method.
| Calculated logistic parameters | Supine | HUT |
|---|---|---|
| Slope (sensitivity, max gain, ms/mmHg) | −3.7 ± 0.7 | −3.3 ± 0.8 |
| MAP at maximum gain (mmHg) | 68 ± 3 | 79 ± 3† |
| VE at maximum gain (l/min) | 31 ± 5 | 35 ± 4 |
| Threshold (l/min) | 8 ± 2 | 13 ± 4 |
| Saturation (l/min) | 51 ± 7 | 56 ± 6 |
| Response range (l/min) | 41 ± 8 | 41 ± 6 |
Values are mean ± SD. HUT, head up tilt; MAP, mean arterial pressure; VE, expiratory, minute ventilation; †P < 0.05 compared to the supine.