| Cyanosis occurs when a mixture of oxygenated and deoxygenated blood courses through the arteries, bringing on the blue-red-violet hue characteristic of deoxygenated blood in the veins. |
| This non-invasive device uses a combination red and infra-red light passed through a patient's finger to determine a ratio of oxygenated and deoxygenated hemoglobin. |
| And because the degree to which a particular wavelength of light is absorbed depends on the type of tissue and, in the case of blood, on whether it is oxygenated or deoxygenated, there is, in effect, a natural contrast agent. |
| As a result of the obstruction imposed by the pulmonary stenosis, deoxygenated venous blood is shunted from the right to the left side of the heart into the arterial circulation. |
| As oxyhemoglobin circulates to deoxygenated tissue, oxygen is incrementally unloaded and the affinity of hemoglobin for oxygen is reduced. |
| Silting, aggravated by autumn leaf fall, had deoxygenated the water but the conservation-keen couple were reluctant to restore the tarn until they knew more about its history. |
