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Old 07-09-2015
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Default high altitude physiology doubt
can anybody tell me the effect of high altitude on arterial oxygen saturation??? it must be normal right?
in kaplan qbank they say that the saturation is decreased....can anybody explain this clearly? i dint fing google of much help...thnx
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Old 07-09-2015
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Originally Posted by smita View Post
can anybody tell me the effect of high altitude on arterial oxygen saturation??? it must be normal right?
in kaplan qbank they say that the saturation is decreased....can anybody explain this clearly? i dint fing google of much help...thnx
When Partial pressure of O2 falls which way the saturation is supposed to go ?
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Old 07-09-2015
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saturation is all about how many oxygen molecules bind to a heamoglobin ryt???? the haemoglobin as such is normal in structure!!
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saturation is all about how many oxygen molecules bind to a heamoglobin ryt???? the haemoglobin as such is normal in structure!!
yes thats right
but lack of O2 which is represented decreased PO2 causes hemoglobin to be less saturated

whatever decreases PO2 decreases O2sat but not visa versa
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Old 07-09-2015
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thnk u for making it crystal clear
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Old 07-12-2015
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Default High altitude physiology doubt
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Originally Posted by smita View Post
thnk u for making it crystal clear
U just remember this

FiO2-----> PAO2 -----> PaO2 ------> Sao2
It works only in one direction.
And each one is depend on its previous one.

If previous one decreases its going to decrease the next one.

At high altitude FiO2 (PiO2) is decreased and so all of next ones.

FiO2 - Fraction/ Percentage of inspired O2
PAO2 - Alveolar O2 concentration
PaO2 - plasma concentration
SaO2 - Hb saturation.

If anything i have explain is incorrect , plz explain it
Thanks
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Old 07-13-2015
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Originally Posted by Gajera.yatin View Post
U just remember this

FiO2-----> PAO2 -----> PaO2 ------> Sao2
It works only in one direction.
And each one is depend on its previous one.

If previous one decreases its going to decrease the next one.

At high altitude FiO2 (PiO2) is decreased and so all of next ones.

FiO2 - Fraction/ Percentage of inspired O2
PAO2 - Alveolar O2 concentration
PaO2 - plasma concentration
SaO2 - Hb saturation.

If anything i have explain is incorrect , plz explain it
Thanks

that one is going to my fa!!! thnk u
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