Table 2.
Pa,O2 (mmHg) | Ca,O2 (ml(100 ml)−1) | Pa,CO2 (mmHg) | ||
---|---|---|---|---|
7N | Air | 82.4 ± 1.3 | 21.6 ± 0.27 | 45.7 ± 2.7 |
8% O2 | 31.6 ± 0.1 | 14.5 ± 0.56 | 31.3 ± 3.8 | |
7CH | 12% O2 | 39.5 ± 2.2*** | 22.08 ± 0.47 | 34.0 ± 1.0** |
8% O2 | 32.6 ± 1.5 | 18.28 ± 0.86* | 29.0 ± 0.8 | |
18N | Air | 85.7 ± 1.8 | 22.36 ± 0.25 | 45.4 ± 2.5 |
8% O2 | 32.4 ± 0.9 | 15.4 ± 0.8 | 32.6 ± 2.2 | |
18CH | 12% O2 | 40.6 ± 2.6** | 19.96 ± 0.6* | 34.5 ± 1.5** |
8% O2 | 30.7 ± 1.8 | 16.19 ± 1.12 | 29.6 ± 1.8 |
7N and 18N rats were switched from breathing air to breathing 8% O2 for 5 min, while 7CH and 18CH were switched from breathing 12% O2 to breathing 8% O2 for 5 min. Blood samples were taken under the respective control conditions at the 5th minute of breathing 8% O2. Values are given as means ± s.e.m.
P < 0.001
P < 0.01
P < 0.05, significant difference between N and CH rats for values recorded in N rats breathing air and CH rats breathing 12% O2, or in N and CH rats breathing 8% O2.