Suggested Level of Knowlege: Detailed

LOs

BT_PO 1.23 Describe the oxygen cascade

BT_PO 1.24 Describe the alveolar exchange of oxygen and carbon dioxide

BT_PO 1.25 Discuss diffusion capacity and its measurement

Past SAQs

2003.2 Briefly describe the potential causes of a difference between measured end-tidal and arterial partial pressure of carbon dioxide.

2003.2 Explain the difference between perfusion limitation and diffusion limitation in the transfer of gas between alveolus and pulmonary capillary. Outline the factors that determine whether gas transfer is perfusion or diffusion limited.

1999.1 Describe the factors that affect the transport of oxygen and carbon dioxide from the alveolus to blood.

Diffusion