dr_kh
Forum Newbie
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2 patients-pt. A has CO poisoning & CO binds 50% of the available O2 binding sites on Hb .
& pt. B has iron def anaemia & pt. has 50% of the normal amount of Hb
Why pt A has higher risk of tissue hypoxia?
1 CO causes arterial hypoxemia while anemia does not
2 CO causes decrease in diffusing capacity
3 decrease in P50 of Hb for O2
4 greater decrease in concentration of arterial oxygen
5 reduced rate of O2 binding to available Hb
Can someone post the answer with explanation?
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| me007
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3
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| keepgoing
Forum Fanatic
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Its a repeat question
http://www.prep4usmle.com/forum/thread/23973
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| lq2006
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3
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| dr_student
Forum Newbie
Topics: 4
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co poisoning
left shift of oxygen dissociation curve
decrease in the p50
increase in the affinity
decreased release to tissues
tissue hypoxia
c
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