Diffusion capacity

dif·fus·ing capacity (d

-fy

ng)

The capacity of the alveolocapillary membrane to transfer gas.

diffusing capacity

[difyo̅o̅′sing]

the rate of gas transfer through a unit area of a permeable membrane per unit of gas pressure difference across it. It is affected by specific chemical reactions that may occur in the blood. Also called diffusion factor, transfer factor of lungs.

diffusing capacity [dĭ-fuz´ing]

the rate at which a gas diffuses across the alveolocapillary membrane per unit difference in the partial pressure of the gas across the membrane, expressed in ml/min/mm Hg. Because of their high affinity for hemoglobin, both oxygen and carbon monoxide are limited in their rate of diffusion by their diffusing capacity. The diffusing capacity of the lung for these gases is symbolized by Dl_O_₂ and Dl_CO. The parameter usually measured is Dl_CO. The normal value for the diffusing capacity of oxygen is 20 ml/min/mm Hg. If, during quiet breathing, the pressure difference of oxygen averages 11 mm Hg, a total of approximately 220 ml of oxygen diffuses through the respiratory membrane each minute. During strenuous exercise or other conditions that increase pulmonary activity, the diffusing capacity may increase to three times as much as that during rest. Pulmonary diseases that damage the respiratory membrane greatly interfere with the capacity of the oxygen to pass through the membrane and oxygenate the blood.

diffusing capacity

the rate at which a gas diffuses across the alveolar-capillary membrane per unit difference in the partial pressure of the gas across the membrane, expressed in ml/min/mmHg. Because of their high affinity for hemoglobin both oxygen and carbon monoxide are limited in their rate of diffusion by their diffusing capacity.

diffusing capacity

Pulmonary medicine A measure of a substance's efficiency in transversing a particular barrier, which in the lungs corresponds to the ability of gases in the alveolar space to enter the blood, and of the gases in the blood to enter the alveoli for removal from the body by exhalation. See Pulmonary function test.

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Blue Bloater BOOP capacity closing capacity cocaine D diffusing capacity of lungs diffusion factor Dl CO Dl O 2 DLco DLo2 Exubera forced vital capacity FRC functional residual capacity FVC heat capacity IC	6 percent and diffusion capacity scores by 11 percent in the 18 patients who had completed one year of treatment. Cancer drug may provide treatment for chronic connective tissue ... by Asian News International 1], but a very low diffusion capacity, the following equation should be used: Pa[O. Air travel and COPD by Krige, L.P. / CME: Your SA Journal of CPD [ILLUSTRATION OMITTED] As you all know, the diffusion capacity measurement is referred to as DLCO which stands for "diffusion lung carbon monoxide. The mechanism of pulmonary diffusion by Harvey, Jim / FOCUS: Journal for Respiratory Care & Sleep Medicine	diffuse hypersensitivity pneumonia diffuse hypertrophy-breast diffuse idiopathic skeletal hyperostosis diffuse interstitial pulmonary fibrosis diffuse ischemic injury diffuse large B-cell lymphoma diffuse lipoma diffuse lymphoma diffuse mesangial proliferation diffuse myelitis diffuse myocardial fibrosis diffuse noxious inhibitory control diffuse peritonitis diffuse scleroderma diffuse sclerosis diffuse waxy spleen diffused light Diffusely Positive Review of Systems diffuser diffusible diffusible stimulant diffusing capacity diffusing capacity of lungs diffusion diffusion anoxia Diffusion capacity diffusion chamber diffusion coefficient diffusion constant diffusion defect diffusion deposition diffusion factor diffusion hypoxia diffusion of gases Diffusion of Responsibility diffusion respiration Diffusion tensor imaging diffusion-weighted imaging diflorasone diflorasone diacetate difloxacin diflubenzuron Diflucan diflucortolone diflunisal difluoromethylornithine difluorotetrachloroethane digastric digastric fossa digastric muscle digastric triangle	Diffusion (business) Diffusion (business) Diffusion (disambiguation) Diffusion (disambiguation) Diffusion (disambiguation) Diffusion (disambiguation) Diffusion (mathematics) Diffusion (mathematics) Diffusion (mathematics) Diffusion (mathematics) Diffusion Ameublement Fabrique diffusion annealing diffusion anoxia Diffusion Apparatus diffusion area Diffusion Art Musique Diffusion Assistance Forterre Puisaye Diffusion Auto Industrielle Électricité Diffusion Automobile des Grandes Alpes Diffusion barrier Diffusion barrier Diffusion barrier Diffusion barrier Diffusion Bayonne Peinture Auto Diffusion Binding Assay diffusion bonding Diffusion Brazing Diffusion Brazing Diffusion Cadeaux Loisirs Vidéo Diffusion capacitance Diffusion capacity diffusion chamber diffusion chamber diffusion chamber diffusion chamber Diffusion Chaussures et Vêtements diffusion cloud chamber diffusion coating Diffusion coefficient Diffusion coefficient Diffusion coefficient Diffusion coefficient Diffusion coefficient Diffusion Coefficient in Crude Oil Diffusion Communication Promotion Édition Diffusion constant Diffusion constant diffusion current Diffusion d'Abonnements de la Librairie Georg Diffusion d'Instruments de Mesure Diffusion de Biens d'Equipement de l'Habitat Diffusion De Donnes Diffusion de l'Information sur l'Amérique Latine Diffusion de la Culture Scientifique et Technique Diffusion de la Pensée Française Diffusion de Matériel Hydraulique Diffusion de Matériel Industriel Diffusion de Pièces Détachées d'Origine Diffusion de Pièces Froids et Chauds diffusion defect diffusion deposition

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