? ? ????

??????1.??????????[K+]i/[K+]e?????????????????????????????????????????????
?????????????????????????????[K+]i/[K+]e???????????[K+]i/[K+]e?????????????????????????
2.?
??????????????K+???K+?????????????????3mmol/L??????????????potassium conductance??????????????????????????????????2?????????????????3...

???????????????????????????????????????????????????????????????????????????????????????????

1.???
2??
1??
2?
3??
3???????????????????????
????,????.

???????,:a.?,W??,???,?,???,?????;b.?,?,,?,??,?,??????;c.???,???,?,???,????. : (1),???,??10%?30~40ml/d?g??13.4mmol.????,??1g?4.5mmol. (2),??,???????....

??3.5mmol/L???2mmol/L?????????????50-100mmol90?????????????????????????????????????????????3.55.5mmol/L?4.2mmol/L???3.5mmol/L??????????????????????????????????
 
 

1???????????????????????????????????????????????????????47???20mmol/L?710?510mmol/L??38150mmol/L

2?
?????????????????K+???3...

???



??

?????????????

?

1.? ??????????????Verner--Morrison????????B??????????????????????????????100140mmol / L??

2?? ?????????????????????????????????? Liddle?????Fanconi??????????)

3??? ?????????????? ?????????????????????????? Cushing?ACTH????????????????????????

???

??????????????



??...

?????:

??[HCO3-]?

1.??

(1)???????????HCl??HClH+??CO2+H2OH2CO3H+HCO3-?Cl-?????????H+Cl-?HCl?HCl??????NaHCO3???H+????HCl????NaHCO3??????NaHCO3HCl???[HCO3-]?????[HCO3-]??

????Cl+K+????????????Cl-???HCO3-???K+???H+????????Na+??H+K+??

2H+??H+?????????????H+K+,?Na+?H+?H2COH3H+HCO3-??HCO3-??Na+??...