Alveolar-arterial gradient — The Alveolar arterial gradient (A a gradient), is a measure of the difference between the alveolar concentration of oxygen and the arterial concentration of oxygen. It is used in diagnosing the source of hypoxemia. Equation A a gradient = PAO2… … Wikipedia
equation — A statement expressing the equality of two things, usually with the use of mathematical or chemical symbols. [L. aequare, to make equal] alveolar gas e. the e. defining the steady state relation of the alveolar oxygen pressure to the barometric… … Medical dictionary
Pulmonary gas pressures — Following is a list of average partial pressures (in torr) for a human at rest:Factors affecting alveolar gas pressuresThe alveolar oxygen pressure is lower than the atmospheric O2 partial pressure for two reasons. * Firstly, as the air enters… … Wikipedia
Bohr equation — The Bohr equation describes the amount of Physiological Dead Space in a person s lungs. This is given as a ratio of dead space to tidal volume. It differs from Anatomical Dead Space as measured by Fowler s method as it includes alveolar dead… … Wikipedia
Dead space (physiology) — Blood gas, acid base, gas exchange terms PaO2 Arterial oxygen tension, or partial pressure PAO2 Alveolar oxygen tension, or partial pressure PACO2 Arterial carbon dioxide tension, or partial pressure PaCO2 Alveolar carbon dioxide tension, or… … Wikipedia
Respiratory system — See also: Respiratory tract Respiratory A complete, schematic view of the human respiratory system with their parts and functions. Latin … Wikipedia
Diffusion capacity — Diagnostics MeSH D011653 In biology, diffusion capacity is a measurement of the lung s ability to transfer gases. Oxygen uptake may be limited by diffusion in circumstances of low ambient oxygen or high pul … Wikipedia
Pulmonary surfactant — Diagram of the alveoli with both cross section and external view Pulmonary surfactant is a surface active lipoprotein complex (phospholipoprotein) formed by type II alveolar cells. The proteins and lipids that surfactant comprises have both a… … Wikipedia
Pulmonary compliance — (or lung compliance) can refer to either dynamic or static lung compliance. Static lung compliance is the change in volume for any given applied pressure.[1] Dynamic lung compliance is the compliance of the lung at any given time during actual… … Wikipedia
Hemoglobin — Hemoglobin, human, adult (heterotetramer, (αβ)2) Structure of human hemoglobin. The protein s α and β subunits are in red and blue, and the iron containing heme groups in green. Fro … Wikipedia
