Table 2 Summary of mean ± SD (coefficient of variation) baseline vessel diameter and mean ± SD proportional changes in vessel diameter measured in all segments during systemic gas perturbations.
From: Reactivity in the human retinal microvasculature measured during acute gas breathing provocations
Vessel type | Baseline vessel diameter (mean ± SD) | Vessel reactivity (mean ± SD) | |
|---|---|---|---|
Isocapnic hyperoxia | Isoxic hypercapnia | ||
Pre-capillary arterioles | 13.8 ± 4.0 µm (0.29) | −6.3 ± 4.0% | +4.4 ± 6.7% |
Capillaries | 5.5 ± 1.3 µm (0.23) | −5.4 ± 9.0% | +2.2 ± 9.2% |
Post-capillary venules | 18.3 ± 4.3 µm (0.24) | −5.2 ± 3.3% | +6.5 ± 4.8% |
