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Old 07-16-2009, 01:55 PM   #1
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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
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Old 07-16-2009, 07:50 PM   #2
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Quote:
Originally Posted by DreamMachine View Post
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
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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