diffusing capacity

diffusing capacity
diffusion capacity the ability of the alveolocapillary membrane to transfer gas: a reflection of the thinness and area of the alveolocapillary membrane. It is the amount of gas transferred per minute from the alveolar gas to the pulmonary capillary blood divided by the mean pressure gradient of the gas between the alveolar gas and the capillary blood; unit, mL/min/torr (or mm Hg). Symbol D.

Medical dictionary. 2011.

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