physio Q - amin92

[ArchivalUser]

2 patients- pt. A has CO poisoning & CO binds 50% of the available O2 binding sites on Hb .
& pt. B has iron def anemia & 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

[ArchivalUser]

333

[ArchivalUser]

55

[ArchivalUser]

3/5////

[ArchivalUser]

p 50 is reduced, but does that cause probs sheefa

[ArchivalUser]

3333

[ArchivalUser]

multivit, we wait for u

[ArchivalUser]

yep
it shipts curve to left so p50 reduces n oxygen delivery to tissues suffers

[ArchivalUser]

but , also because of noncomp binding it may reduce the binding of other o2 so, total o2 capacity is reduced

[ArchivalUser]

I think 3