Metabolic Acidosis
PCO2 = 1.5 (HCO3) + 8
Metabolic Alkalosis
PCO2 = 40-.07(HCO3-24)
Respiratory Acidosis Acute
HCO3 = 24 + [(PCO2-40)/10]
Respiratory Acidosis Chronic
HCO3 = 24 + 4 [(PCO2-40)/10]
Respiratory Alkalosis Acute
HCO3 = 24-2[(40-PCO2)/10]
Respiratory Alkalosis Chronic
HCO3 = 24-5[(40-PCO2)/10]
Respiratory Acidosis Acute Rule of Thumb
HCO3 will increase 1 meq/L for each 10 mmHg PCO2 is above 40
Respiratory Acidosis Chronic Rule of Thumb
HCO3 will increase 4 meq/L for every 10 mmHg PCO2 is above 40
Respiratory Alkalosis Acute Rule of Thumb
HCO3 will decrease 2 meq/l for each 10 mmHg that PCO2 is below 40
Respiratory Alkalosis Chronic Rule of Thumb
HCO3 will decrease 5 meq/l for each 10 mmHg that PCO2 is below 40