The Pressure Gradient for the Diffusion of CO in the Lung

question 30

Multiple Choice

The pressure gradient for the diffusion of CO in the lung is:

• A) Equivalent to the partial pressure of inspired CO
• B) The difference between inspired and expired CO
• C) Equal to the alveolar minus capillary partial pressure of CO
• D) Equal to the alveolar-arterial O₂ gradient

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Definitions:

Congestive Heart Failure

A chronic condition where the heart does not pump blood as well as it should, leading to a buildup of fluid in the lungs and surrounding body tissues.

Myocardium

The muscle layer of the heart.

Left Ventricle

The chamber of the heart that receives oxygenated blood from the left atrium and pumps it into the aorta for circulation to the body.

Hypotension

A condition characterized by blood pressure that is lower than normal, which can lead to symptoms like dizziness and fainting.