Alkalosis vs. acidosis: directions of pH and HCO3

ROME:
Respiratory= Opposite:
· pH is high, PCO2 is down (Alkalosis).
· pH is low, PCO2 is up (Acidosis).
Metabolic= Equal:
· pH is high, HCO3 is high (Alkalosis).
· pH is low, HCO3 is low (Acidosis).