Table 4.
Resting PaCO2, Torr |
CO2 Sensitivity, l·min−1·Torr−1 |
|||||
---|---|---|---|---|---|---|
Study | LPBN | MPBN | KFN | LPBN | MPBN | KFN |
Preimplant | 39.6 ± 0.4 | 41.6 ± 0.7 | 41.2 ± 0.7 | 2.67 ± 0.31 | 2.07 ± 0.18 | 2.36 ± 0.28 |
Postimplant | 40.3 ± 1.5 | 43.1 ± 1.8 | 39.7 ± 0.4 | 2.41 ± 0.21 | 1.82 ± 0.26 | 1.98 ± 0.24 |
Post-Atr MD | 41.3 ± 0.7 | 43.8 ± 1.8 | 39.9 ± 0.6 | 2.34 ± 0.21 | 1.83 ± 0.28 | 2.15 ± 0.26 |
Post-IA injection | 40.5 ± 1.7 | 39.9 ± 0.6 | 38.9 ± 1.0 | 2.19 ± 0.21 | 2.12 ± 0.17 | 2.22 ± 0.20 |
Values are means ± SE. CO2 sensitivity is defined as the slope of the relationship between pulmonary ventilation (l/min) and PaCO2 (Torr). For all cannula-implantation groups, the resting arterial Pco2 (PaCO2) and CO2 sensitivity were unaffected by cannula implantation, MD of Atr, or injection of IA perturbations. Furthermore, there was no significant difference between the 3 groups of goats.