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Old 07-31-2012
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Question SaO2, PaO2, and FiO2!

i cant understand the difference between these 3 : Sao2 , PaO2 , FiO2 ????
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Old 07-31-2012
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fio2 - oxygen fraction of atmospheric air (21%)
atmospheric air is a mixture of different gases , each gas has a fraction.
f-i-02 =fraction of inspired o2

total o2 content of blood is 20%, out of that 20 % :-

pa02 - dissolved 02 in blood . only 0.3% exists in this form . rest 19.7% is bound to haemoglobin .

sa02- o2 bound to haemoglobin . 4 o2 molecules are bound to one hb molecule .


i know this may not not be a good explanation for you but dont worry .
i think you haven't done kaplan physio and goljan yet.

both of them explain these basics very well esp dr goljan .
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Old 08-01-2012
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Quote:
Originally Posted by nancynaguib View Post
i cant understand the difference between these 3 : Sao2 , PaO2 , FiO2 ????
  • for ck make sure you know that normal SaO2 is more than 90,PaO2 more than 70 ....less than this in most cases will mean intubation...
  • Also, in COPD patient need home oxygen if SaO2 is less than 88 or PaO2 is less than 55
  • When PaO2 is less than 70 in PCP Pneumonia, give steroids...
  • When one has to bump oxygen saturation while patient is on ventilator do raise FiO2...or use PEEP.

any other relevant facts for ck concering these...
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The above post was thanked by:
nakeya52 (11-28-2013)



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