The<unk>  quantifies the extent to which venous blood bypasses oxygenation in the capillaries of the lung.<unk> ” and “dead space“ are terms used to describe conditions where either blood flow or ventilation do not interact with each other in the lung, as they should for efficient gas exchange to take place. These terms can also be used to describe areas or effects where blood flow and ventilation are not properly matched, though both may be present to varying degrees. Some references refer to<unk> -effect” or “dead space-effect” to designate the ventilation/perfusion mismatch states that are less extreme than absolute<unk>  or dead space. The following<unk>  relates the percentage of blood flow that is not exposed to inhaled gas, called the<unk>  fraction , to the content of oxygen in venous, arterial, and pulmonary capillary blood. : :Where: :Qs = Pulmonary Physiologic<unk>  (mL/min) :Qt = Cardiac Output (mL/min) :CCO2 = End-pulmonary-capillary Oxygen Content :CaO2 = Arterial oxygen content :CVO2 = Mixed Venous Oxygen Content
Shunt equation
Bohr equation
Maxwell–Fricke equation
Paula method
Preston curve
Extraction ratio
Form constant
Winters' formula