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Cardiovascular responses to graded hypoxaemia in the fetal llama
| Basal | H20 | H40 | H60 | |
|---|---|---|---|---|
| Mean arterial pressure (mmHg) | 48 ± 2 | 47 ± 1 | 47 ± 3 | 49 ± 3 |
| Heart rate (beats min−1) | 126 ± 3 | 113 ± 12 | 118 ± 9 | 108 ± 6 |
| Cardiac output (ml min−1 kg−1) | 250 ± 13 | 252 ± 23 | 209 ± 7 | 199 ± 30 |
| Total vascular resistance (mmHg min kg ml−1) | 0.19 ± 0.02 | 0.19 ± 0.02 | 0.23 ± 0.02 | 0.28 ± 0.05 |
Values are shown as means ± s.e.m. Measurements were made after 20 (H20), 40 (H40) and 60 (H60) min of hypoxaemia.
