Regulation of Breathing
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Questions and Answers

At high altitude, what is the PO2 and the A-a gradient?

  • PO2 dec, A-a gradient inc
  • PO2 inc, A-a gradient dec
  • PO2 dec, A-a gradient stays the same (correct)
  • PO2 inc, A-a gradient stays the same

What is the PO2 and A-a gradient of a diffusion defect condition like pulmonary fibrosis?

  • PO2 dec, A-a gradient inc (correct)
  • PO2 dec, A-a gradient dec
  • PO2 inc, A-a gradient stays the same
  • PO2 dec, A-a gradient stays the same

If someone is hypoventilating, what would be the effect on PaO2 and the A-a gradient?

  • PO2 dec, A-a gradient inc
  • PO2 dec, A-a gradient stays the same (correct)
  • PO2 inc, A-a gradient dec
  • PO2 inc, A-a gradient stays the same

A V/Q defect would cause...

<p>PO2 dec, A-a gradient inc (A)</p> Signup and view all the answers

A right to left shunt would cause what effect on PO2 and the A-a gradient?

<p>PO2 dec, A-a gradient inc (C)</p> Signup and view all the answers

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