Hypoxia: Difference between revisions

(Created page with "==Background== PAO2 = (PB - PH2O) x FiO2 - PaCO2/RQ = 760 - 47 x 0.21 - 40/0.8 = 100 ==DDX== -V/Q mismatch -Diffusion -Hypercarbia -Altitude -Card...")
 
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==Background==
==Background==
PAO2 = (PB - PH2O) x FiO2 - PaCO2/RQ
PAO2 = (PB - PH2O) x FiO2 - PaCO2/RQ


        = 760 - 47 x 0.21 - 40/0.8
*Normal PAO2 = 760 - 47 x 0.21 - 40/0.8
 
*Normal PAO2= 100
        = 100
 


==DDX==
==DDX==
 
#V/Q mismatch
 
#Diffusion
-V/Q mismatch
#Hypercarbia
 
#Altitude
-Diffusion
#Cardiac Shunt
 
-Hypercarbia
 
-Altitude
 
-Cardiac Shunt
 
 
 


[[Category:Pulm]]
[[Category:Pulm]]

Revision as of 22:59, 9 June 2011

Background

PAO2 = (PB - PH2O) x FiO2 - PaCO2/RQ

  • Normal PAO2 = 760 - 47 x 0.21 - 40/0.8
  • Normal PAO2= 100

DDX

  1. V/Q mismatch
  2. Diffusion
  3. Hypercarbia
  4. Altitude
  5. Cardiac Shunt