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Hemoglobin saturation graph

By entering values in the green boxes, you can alter the main factors that determine the position of the oxyhaemoglobin saturation curve.

Enter data in green boxes. Use the tab key to move between boxes.

         
  Subject 1 Subject 2 Subject 3    
PaCO2  
H+  
Temp  
2,3 DPG  
PaCO2  
pH  
HCO3-  
p50 kPa  
       
      kPa  
      nmol/l  
Enter SaO2:   ºC  
  kPa   mmol/l  
      mmHg  
         
      mmol/l  
      kPa  
       

p50 is the partial pressure at which haemoglobin is 50% saturated. You can find a similar value for any other point on the curve by typing in the desired saturation in the green boxes. Click here for a tutorial on oxygen carriage in the blood.