Definition As the temperature of blood decreases, the solubility of O2 and CO2 increases, which consequently lowers their partial pressures (decreases PaO2 and PaCO2). This especially becomes important during cold cardiopulmonary bypass. PaCO2 decreases by approximately 2 mm Hg and PaO2 decreases by approximately 5 mm Hg per °C below 37°C. Therefore if an ABG […]