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Diffusion and perfusion limited gases and diffusing capacity

Anaesthesia Coffee Break

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Is Carbon Dioxide Perfusion or Diffusion Limited?

The question relates to whether the gas c o two, is either perfusion or diffusion limited. Dan: By talking about carbon dioxide, you're really outside the definitions that we've normally talked about. The solubility of this gas, 20 times more soluble than oxygen, and then its association with compounds that may or may not cause partial pressure gradin to increase or decrease. But again, similar things woud ply, if you've got e, you know, change in disease states, and potentially exercise causing faster transit of the red blood cell,. maybe this could become diffusion limited.

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