2)compensatory regulation ①buer: 2 respiratory compensation ③ cellular compensation ④ renal compensation IH:CA.→H+ secretion 1 NH3 secretion 1 HHCO3/H2CO3=20: 1 compensation acidosis [HCO3/H2CO3< 20: 1 decompensation acidosis SB AB BB BE Paco2 AB<SB)2) compensatory regulation ① buffer: ② respiratory compensation ③ cellular compensation ④ renal compensation [H+ ] : C.A. H+ secretion NH3 secretion [HCO- 3] / [H2CO3] = 20:1 compensation acidosis [HCO- 3] / [H2CO3] < 20:1 decompensation acidosis (SB AB BB BE PaCO2 AB < SB)