Table 2.
Haemodynamic and ventilatory responses to LBNP at −40 mmHg when ventilation was maintained at the level elicited during hypercapnia (PPET,CO2+ 10 mmHg above eupnoea) and PPET,CO2 was held constant at control levels
| LBNP (mmHg) | HR (beats min−1) | MAP (mmHg) | PP (mmHg) | VE (1 min−1) | VT (1) | Rf (breaths min−1) | PPET,CO2 (mmHg) | CFV (cm s−1) |
|---|---|---|---|---|---|---|---|---|
| 0 | 70 ± 6 | 80 ± 2 | 61 ± 4 | 29.6 ± 5.6 | 1.5 ± 0.3 | 20 ± 1 | 41.6 ± 0.8 | 55.0 ± 6.4 |
| -40 | 88 ± 6* | 83 ± 2 | 54 ± 3* | 29.8 ± 5.5 | 1.5 ± 0.3 | 20 ± 1 | 41.6 ± 0.8 | 52.4 ± 5.6 |
n = 10;
*
P < 0.05, −40 vs. 0 mmHg LBNP.