Alveolar-arterial O2 gradient, pATM at sea level 760 mmHg
PAO2 - paO2
A-a O2 gradient = [FiO2 x (pATM - pH2O)] - (paCO2/0.8) - paO2
=[FiO2 x (760 - 47)] - (paCO2/0.8) - paO2
Normal for young adult non-smoker < 15 mmHg at sea level at RA
Normal estimate by age < (age/4) + 4
Expected Peak Flow:
PEFR, children = [(Height in cm - 100) × 5] + 100
PEFR, adult men = {[(Height in m × 5.48) + 1.58] - [Age × 0.041]} × 60
PEFR, adult women = {[(Height in m × 3.72) + 2.24] - [Age × 0.03]} × 60
PAO2 - paO2
A-a O2 gradient = [FiO2 x (pATM - pH2O)] - (paCO2/0.8) - paO2
=[FiO2 x (760 - 47)] - (paCO2/0.8) - paO2
Normal for young adult non-smoker < 15 mmHg at sea level at RA
Normal estimate by age < (age/4) + 4
PEFR, children = [(Height in cm - 100) × 5] + 100
PEFR, adult men = {[(Height in m × 5.48) + 1.58] - [Age × 0.041]} × 60
PEFR, adult women = {[(Height in m × 3.72) + 2.24] - [Age × 0.03]} × 60
Formulas
Billing
Dermatologic nomenclature
Creative Commons
Anal tags
Bougie
Second victim
Excipients