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Mixed Venous O2

Discussion in 'ITE Keywords' started by DreamMachine, Jul 16, 2009.

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  1. DreamMachine

    DreamMachine Porn$tar

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    What is the expected mixed venous oxygen tension, in mmHg, in a normal adult after breathing 100% oxygen for 10 min?

    a. 573
    b. 563
    c. 150
    d. 95
    e. 45

    Please discuss.

    Source: ITE 1996 Book A Q 67
  2. pgg

    pgg Laugh at me, will they? Moderator

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    E

    100% oxygen for 10 min doesn't change your arterial O2 content by much. A normal adult will still have a svo2 around 70-75, or an O2 tension around 40-45.

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