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cerebrovascular accident ( st! ) respiratory CN 6) Misoperation of mechanical ventilator Compensation amp。 Regulation ( 1) R e g u la ti o n i n m e t a b o li c a c id o s isNH4+, H+K+H++ B u fB uf H++ H C O 3H+H C O3CO2 H2CO3C e l l s( C A +)H CO3BH2CO3P CO 2A B SB p HK i dn eyL un g(+ )H+NH32) Regulation in respiratory acidosis K + H + + Buf Buf H + + HCO3 H + HCO 3 CO 2 , H 2 CO 3 Cells (CA+) NH 4 + , H + HCO 3 B H 2 CO 3 P CO 2 AB SB p H Kidney Lung H + NH 3 H 2 O +CO 2 H 2 CO 3 HCO 3 CI ( Hb HbO2 ) ( hypochloremia ) ( aciduria ) R e g u l a t i on i n m e t a b o li c a l ka l os i sK+H++ B u fB uf H++ H C O 3H+H C O3CO2 H2CO3C e l l s( C A )NH4+, H+H CO3BH2CO3P CO 2A B SB p HK i dn eyL un gH+NH3( Hb HbO2 )H C O 3 ( al k al u r i a )[ hy p ok al e m i c al k al os i s ] [ H +i n c e l l s ] [ p ar ad oxi c al ac i d u r i a ]C N S( )( co m pe ns a t i o n )3) 4) Regulation in respiratory alkalosis K + H + + Buf Buf H + + HCO3 H + HCO 3 CO 2 H 2 CO 3 Cells (CA+) NH 4 H+ HCO 3 B H 2 CO 3 P CO 2 AB SB p H Kidney Lung H + NH 3 H 2 O +CO 2 H 2 CO 3 HCO 3 CI ( hyperchloremia ( Hb HbO2 ) HCO3 ( alkalinuria ) CO2