844, 855, 866, 877, 888 and 800. No advantage to 8YY vs. using toll-free number as the latter is broad enough to include domestic toll-free services in other countries which number things differently. K7L (talk) 04:21, 31 October 2013 (UTC)
From Wikipedia, the free encyclopedia. The arteriovenous oxygen difference, or a-vO2 diff, is the difference in the oxygen content of the blood between the arterial blood and the venous blood. It is an indication of how much oxygen is removed from the blood in capillaries as the blood circulates in the body.he usual unit for a-vO 2 diff is millilitres of oxygen per 100 millilitres of blood (mL/100 mL), however, particularly in medical uses, other units may be used, such as micro moles per millilitre (Î¼mol/mL).
Med Student, PAO2 is the symbol for Partial Pressure of Oxygen in Arterial Blood, or Partial Pressure of Oxygen in the Alveolar Gas.PVO2 is the symbol for Mixed Venous Oxygen Tension.ao2 is partial pressure of oxygen in arterial blood, pvo2 isMixed venous partial pressure of oxygen, Partial Pressure of Carbon Dioxide in arterial blood.