Disorder of acid base balance are classified according to their cause, and the direction of the pH change , into respiratory acidosis, metabolic acidosis , respiratory alkalosis , metabolic alkalosis .
1. METABOLIC ACIDOSIS ---
pH -- decrease
[ H+]-- increase
Primary disturbance -- decrease [ Hco3-]
Secondary response-- decrease pco2
2. METABOLIC ALKALOSIS --
pH -- increase
[H+]-- decrease
Primary disturbance --increase [Hco3-]
Secondary response --increase pco2
3. RESPIRATORY ACIDOSIS--
pH-- decrease
[H+]-- increase
Primary disturbance -- increase Hco3-
Secondary response-- increase pco2
4. RESPIRATORY ALKALOSIS --
pH-- increase
H+-- decrease
Primary disturbance-- decrease HCO3-
Secondary response-- decrease pco2
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