pH PaCO2 HCO3
Respiratory Acidosis      
Acute < 7.35 > 45 Normal
Partly Compensated < 7.35 > 45 > 26
Compensated Normal > 45 > 26

Respiratory Alkalosis      
Acute > 7.45 < 35 Normal
Partly Compensated > 7.45 < 35 < 22
Compensated Normal < 35 < 22

Metabolic Acidosis      
Acute < 7.35 Normal < 22
Partly Compensated < 7.35 < 35 < 22
Compensated Normal < 35 < 22

Metabolic Alkalosis      
Acute > 7.45 Normal > 26
Partly Compensated > 7.45 > 45 > 26
Compensated Normal > 45 > 26

Normal Arterial Blood Gas Values

pH 7.35-7.45
PaCO2 35-45 mm Hg
PaO2  80-95 mm Hg
HCO3  22-26 mEq/L
O2 Saturation 95-99%
BE