×
MedSchool: Ace Your OSCEsThe Medical Company
 
 
 
 
 
GET - On the App Store
View
SI Units
US Units
 
PaO₂
mmHg
PaCO₂
mmHg
FiO₂
%
Atm
mmHg
Age
Years
Calculate
A-a = ( FiO₂ × (PB - PH₂O)) -
PaCO₂ 0.8
- PaO₂

FiO₂ = 0.21 on room air
PB = 760mmHg at sea level
PH₂O = 47mmHg

Normal value = ( Age / 4 ) + 4

Snapshot: Initialising...