Cov pa oxygen saturation ib txwm yog 97-100%, thiab cov neeg laus feem ntau muaj cov pa oxygen saturation qis dua cov hluas.Piv txwv li, ib tug neeg muaj hnub nyoog tshaj 70 xyoo tuaj yeem muaj cov pa oxygen saturation ntawm li 95%, uas yog ib qho kev lees paub.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qib oxygen saturation tuaj yeem sib txawv heev nyob ntawm tus neeg mob.Yog li ntawd, nws yog ib qho tseem ceeb kom nkag siab txog cov hauv paus ntsiab lus ntawm kev nyeem ntawv thiab cov hauv paus physiology cuam tshuam nrog qee yam xwm txheej kom suav nrog cov qib oxygen saturation thiab kev hloov pauv hauv cov qib no.
Cov neeg uas rog dhau los yog raug kev txom nyem los ntawm cov kab mob ntsws thiab cov hlab plawv, emphysema, mob ntsws obstructive pulmonary, kab mob hauv lub plawv, thiab pw tsaug zog apnea yuav muaj cov pa oxygen saturation qis dua.Kev haus luam yeeb cuam tshuam rau qhov tseeb ntawm pulse oximetry, qhov twg SpO2 qis los yog dag siab, nyob ntawm seb puas muaj hypercapnia.Rau hypercapnia, nws yog ib qho nyuaj rau lub pulse oximeter kom paub qhov txawv ntawm cov pa oxygen hauv cov ntshav thiab carbon monoxide (ua los ntawm kev haus luam yeeb).Thaum hais lus, ntshav oxygen saturation yuav txo qis me ntsis.Cov ntshav oxygen saturation ntawm cov neeg mob ntshav qab zib yuav nyob li qub (piv txwv li, 97% lossis siab dua).Txawm li cas los xij, qhov no yuav tsis txhais tau tias muaj cov pa oxygen txaus, vim tias cov hemoglobin hauv cov neeg muaj ntshav qab zib tsis txaus nqa oxygen txaus.Kev noj cov pa oxygen tsis txaus thaum lub sijhawm ua haujlwm yuav ua rau muaj txiaj ntsig zoo rau cov neeg mob ntshav qab zib.
Cov qib hypoxic saturation tsis raug tuaj yeem cuam tshuam nrog hypothermia, txo qis peripheral ntshav perfusion, thiab txias extremities.Hauv cov xwm txheej no, earlobe pulse oximeter lossis arterial blood gas yuav muab cov pa oxygen ntau dua.Txawm li cas los xij, cov roj ntsha arterial feem ntau tsuas yog siv rau hauv kev saib xyuas hnyav lossis xwm txheej ceev.
Qhov tseeb, SpO2 ntau yam uas cov neeg siv khoom feem ntau lees txais yog 92-100%.Qee cov kws tshaj lij pom zoo tias SpO2 qib tsawg kawg 90% tuaj yeem tiv thaiv cov ntaub so ntswg hypoxic thiab ua kom cov neeg siv kev nyab xeeb.
Post lub sij hawm: Mar-01-2021