???

TcyanosisT??????deoxyhemoglobin ?????reduced Hb ???????????????????????????????????????????????


? ??????????????????5 % ???30 % ???????????1g???Hb?1 . 34ml?????????50g/L ( 5g/dl ??????R??????????150g/L?50g / L ?????1 / 3 ???????SaO266 ????PaO2?34mmHg ????Hb ???SaO2< 85 ?????????SaO2???SaO285 ...

??????


1??????????

2????????????????????????




3???????????R




4????????????
???? ??.?.???????????????????? ?????????????????????????????????? ????????????????????????H???????????????????????????????? ?????????????????????????????????????????????????????????????????...

????????
???????????R,????????????????????13.9mmol/L250mg/dl????????5mmol/L?/??30???0.045-0.145mmol/L???10mmol/L?pH?????????18mmol/L
??????????
?
?
1.??? 2.??? 3.???????

1.????????? 2.????????3.??????
???H2CO3??????????
a.???R????
b.????]??
c.CO2???????Na+??K+???????
d.????pH??PCO2?CO2CPBESBBB?...

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

??????????????????R????????????????????????????????????????????????
???,?,??.

????????,????,???:1.????????????????????????????

2.??????????????????38??????????

3.????????????????????

4.???1-2???????????????????T?????????
?
??????