alveolar gas

(A) the gas in the alveoli of the lungs, where gaseous exchange with the capillary blood takes place; called also alveolar air.

Medical dictionary. 2011.

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  • Alveolar gas equation — The alveolar pO2 is not routinely measured but is calculated from blood gas measurements by the Alveolar gas equation:p AO 2 = p IO 2 p ACO 2/R + F , where: * R is the Respiratory quotient (normally about 0.8)* pAO2 is the Alveolar pO2* pIO2 is… …   Wikipedia

  • alveolar gas exchange — the passage of oxygen and carbon dioxide in opposite directions across the alveolocapillary membrane …   Medical dictionary

  • 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

  • gas alveolar — Mezcla de gas existente en las áreas de intercambio gaseoso del pulmón, que reflejan los efectos combinados de la ventilación alveolar y del intercambio gaseoso respiratorio, o el …   Diccionario médico

  • Alveolar macrophage — Micrograph showing hemosiderin laden alveolar marcophages, as seen in a pulmonary haemorrhage. H E stain. An alveolar macrophage (or dust cell) is a type of macrophage found in the pulmonary alveolus, near the pneumocytes, but separated from the… …   Wikipedia

  • Gas cylinder — For the mechanical devices used to impart a force from a pressurized liquid or gas, see pneumatic cylinder. For the large structures used to store town gas, see gas holder. Industrial compressed gas cylinders used for oxy fuel welding and cutting …   Wikipedia

  • gas — 1. A thin fluid, like air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid. 2. In clinical practice, a liquid entirely in its vapor phase at one …   Medical dictionary

  • Alveolar-capillary barrier — Infobox Anatomy Name = PAGENAME Latin = GraySubject = GrayPage = Caption = Gaseous exchange in the lung. Caption2 = Precursor = System = Artery = Vein = Nerve = Lymph = MeshName = Blood Air+Barrier MeshNumber = A04.411.715.025 DorlandsPre = m 08… …   Wikipedia

  • alveolar-capillary membrane — alveolocapillary membrane a thin tissue barrier between pulmonary alveoli and adjacent capillaries, the site of gas exchange between alveolar air and capillary blood. Called also alveolar capillary or alveolocapillary barrier and blood air or… …   Medical dictionary

  • alveolar-arterial oxygen gradient — the difference between the predicted alveolar oxygen tension (PAO2) and the measured arterial oxygen tension (PO2); it is elevated in pulmonary conditions in which there is impaired gas exchange …   Medical dictionary

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