Table 2.
Haematocrit, partial pressure of oxygen (Pa,O2) and carbon dioxide (Pa,CO2) in arterial blood and aretial H (pHa) measured in eight experimental groups
| Haematocrit | Pa,O2 (mmHg) | Pa,CO2 (mmHg) | pHa | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Experimental group | 0 min | 10 min | 20 min | 0 min | 10 min | 20 min | 0 min | 10 min | 20 min | 0 min | 10 min | 20 min |
| Control | 36.2 ± 2.0 | 36.0 ± 1.5 | 35.6 ± 1.3 | 16.8 ± 1.2 | 17.4 ± 2.2 | 17.5 ± 0.9 | 55.2 ± 3.2 | 53.9 ± 2.6 | 54.9 ± 3.1 | 7.362 ± 0.02 | 7.372 ± 0.04 | 7.370 ± 0.03 |
| Hypo | 33.8 ± 1.7 | 36.0 ± 2.0 | 33.6 ± 2.0 | 19.5 ± 1.1 | 22.0 ± 2.3 | 19.8 ± 1.5 | 53.9 ± 2.7 | 48.7 ± 2.4 | 51.0 ± 2.9 | 7.345 ± 0.03 | 7.355 ± 0.03 | 7.344 ± 0.02 |
| CSD | 32.4 ± 1.6 | 32.2 ± 1.5 | 32.4 ± 1.9 | 17.7 ± 1.6 | 17.7 ± 1.2 | 18.0 ± 2.0 | 53.4 ± 3.0 | 50.3 ± 2.5 | 50.6 ± 1.9 | 7.362 ± 0.02 | 7.364 ± 0.03 | 7.369 ± 0.03 |
| Hypo, CSD | 32.6 ± 2.2 | 33.0 ± 1.4 | 33.0 ± 1.5 | 18.4 ± 2.0 | 21.3 ± 1.8 | 19.3 ± 1.4 | 53.9 ± 1.9 | 49.4 ± 1.9 | 50.3 ± 2.3 | 7.364 ± 0.03 | 7.366 ± 0.02 | 7.354 ± 0.03 |
| E2 | 28.8 ± 1.3 | 27.8 ± 1.1 | 28.0 ± 1.1 | 18.0 ± 1.6 | 18.7 ± 1.9 | 18.2 ± 3.0 | 55.5 ± 1.7 | 52.7 ± 4.1 | 52.5 ± 2.7 | 7.343 ± 0.02 | 7.358 ± 0.02 | 7.354 ± 0.02 |
| E2, Hypo | 33.4 ± 1.8 | 35.0 ± 1.6 | 32.8 ± 1.3 | 15.4 ± 1.8 | 18.4 ± 2.2 | 17.9 ± 2.1 | 58.0 ± 2.3 | 55.6 ± 3.6 | 54.1 ± 2.6 | 7.335 ± 0.03 | 7.341 ± 0.03 | 7.378 ± 0.02 |
| E2, CSD | 33.0 ± 1.5 | 33.2 ± 1.4 | 32.6 ± 1.7 | 16.4 ± 1.9 | 17.7 ± 1.3 | 18.0 ± 1.6 | 55.3 ± 3.2 | 54.0 ± 2.5 | 54.6 ± 4.1 | 7.345 ± 0.03 | 7.358 ± 0.02 | 7.360 ± 0.03 |
| E2, Hypo, CSD | 34.4 ± 1.3 | 36.0 ± 1.2 | 34.2 ± 1.6 | 17.6 ± 0.9 | 23.0 ± 1.5 | 20.3 ± 1.7 | 52.8 ± 4.0 | 49.6 ± 2.4 | 50.0 ± 3.9 | 7.351 ± 0.02 | 7.353 ± 0.04 | 7.344 ± 0.02 |
All values are means ± s.e.m. (n = 5) of measurements taken at 0, 10 and 20 min (brachiocephalic occlusion occurs between 0 and 10 min). Hypo = hypotensive; CSD = carotid sinus denervated; E2 = oestradiol treated.