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Yuav ua li cas siv pulse oximeter ntsuas oxygen?

Pulse oximeterssiv los ntsuas cov pa oxygen ntawm cov neeg mob hauv ntau qhov chaw kho mob tau dhau los ua cov cuab yeej tshuaj xyuas ntau dua.Nws muab kev saib xyuas tas li, tsis muaj kev cuam tshuam ntawm hemoglobin oxygen saturation hauv cov ntshav hlab ntsha.Txhua lub pulse nthwv dej yuav hloov kho nws cov txiaj ntsig.

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Pulse oximeters tsis muab cov ntaub ntawv hais txog hemoglobin concentration, cardiac output, efficiency ntawm oxygen xa mus rau cov ntaub so ntswg, oxygen noj, oxygenation, los yog txaus ntawm qhov cua.Txawm li cas los xij, lawv muab lub sijhawm rau pom qhov sib txawv ntawm tus neeg mob cov pa oxygen hauv paus, ua ib qho kev ceeb toom ntxov rau cov kws kho mob kom pab tiv thaiv qhov tshwm sim ntawm qhov tsis txaus ntseeg thiab txhawm rau txheeb xyuas hypoxemia ua ntej qhov tshwm sim ntawm osis.

Nws tau raug pom tias nce kev siv ntawmmem tes oximetersnyob rau hauv cov pawg ntseeg dav dav tuaj yeem ua rau nws zoo ib yam li cov ntsuas kub.Txawm li cas los xij, nws tau tshaj tawm tias cov neeg ua haujlwm tsis muaj kev paub txog kev ua haujlwm ntawm cov khoom siv, thiab kev paub me ntsis ntawm kev ua haujlwm ntawm cov khoom siv thiab cov yam ntxwv uas yuav cuam tshuam rau kev nyeem ntawv.

Piv nrog rau txo hemoglobin, pulse oximeters tuaj yeem ntsuas qhov nqus ntawm cov wavelengths tshwj xeeb ntawm lub teeb hauv oxidized hemoglobin.Arterial oxygenated ntshav yog liab vim qhov loj ntawm oxygenated hemoglobin nws muaj, uas tso cai rau nws nqus tau qee qhov wavelengths ntawm lub teeb.Lub oximeter sojntsuam muaj ob lub teeb-emitting diodes (LED) ntawm ib sab ntawm lub sojntsuam, ib tug liab thiab ib tug infrared.Qhov kev sojntsuam yog muab tso rau ntawm qhov tsim nyog ntawm lub cev, feem ntau yog lub ntsis ntiv tes lossis pob ntseg, thiab LED xa cov wavelength ntawm lub teeb mus rau lub photodetector nyob rau sab nraud ntawm qhov kev sojntsuam los ntawm cov ntshav ntawm cov hlab ntsha.Oxyhemoglobin absorbs lub teeb infrared;txo hemoglobin ua rau lub teeb liab.Lub pulsatile arterial ntshav nyob rau hauv lub systole ua rau oxygenated hemoglobin ntws mus rau hauv cov ntaub so ntswg, absorbing ntau infrared lub teeb, thiab cia lub teeb tsawg dua mus txog lub photodetector.Cov pa oxygen saturation ntawm cov ntshav txiav txim siab qib ntawm lub teeb nqus.Cov txiaj ntsig tau ua tiav rau hauv cov duab digital ntawm oxygen saturation ntawm lub vijtsam oximeter, sawv cev los ntawm SpO2.

Muaj ntau ntau manufacturers thiab qauv ntawm pulse oximeters.Feem ntau muab cov duab digital waveform zaub, audible arterial beat thiab lub plawv dhia zaub, thiab ntau yam sensors kom haum rau cov tib neeg hnub nyoog, qhov loj me lossis qhov hnyav.Qhov kev xaiv nyob ntawm qhov chaw uas siv nws.Txhua tus neeg ua haujlwm uas siv pulse oximeters yuav tsum nkag siab txog nws txoj haujlwm thiab kev siv kom raug.

Arterial ntshav kuaj ntshav yog qhov tseeb dua;Txawm li cas los xij, pulse oximetry yog suav tias yog qhov tseeb txaus rau feem ntau cov hom phiaj kho mob vim muaj kev txwv uas tau lees paub.

Tus neeg mob tus mob-Yuav xam qhov txawv ntawm capillaries thiab khoob capillaries, oximetry ntsuas lub teeb haum ntawm ntau pulses (feem ntau yog tsib).Txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawmYog hais tias tus neeg mob lub peripheral mem tes tsis muaj zog los yog tsis muaj, lubmem tes oximeterkev nyeem ntawv yuav tsis raug.Cov neeg mob uas muaj kev pheej hmoo ntawm hypoperfusion feem ntau yog cov neeg mob hypotension, hypovolemia, thiab hypothermia, thiab cov neeg mob plawv.Cov neeg uas muaj mob khaub thuas tab sis tsis yog hypothermia tuaj yeem muaj vasoconstriction hauv lawv cov ntiv tes thiab ntiv taw thiab tuaj yeem ua rau cov ntshav ntws tsis zoo.

Yog tias qhov kev sojntsuam raug kho nruj dhau lawm, cov hlab ntsha uas tsis yog hlab ntsha tuaj yeem raug kuaj pom, ua rau venous pulsations ntawm tus ntiv tes.Venous pulsation kuj yog tshwm sim los ntawm txoj cai-sab plawv tsis ua hauj lwm, tricuspid regurgitation, thiab lub tourniquet ntawm cov ntshav siab cuff saum lub sojntsuam.

Arrhythmia ntawm lub plawv tuaj yeem ua rau qhov ntsuas tsis raug, tshwj xeeb tshaj yog tias muaj qhov tseem ceeb apex / pob txha tsis txaus.

Intravenous dyes siv rau hauv kev kuaj mob thiab kev kuaj hemodynamic tuaj yeem ua rau qhov tsis raug kwv yees ntawm oxygen saturation, feem ntau qis.Cov teebmeem ntawm daim tawv nqaij pigmentation, jaundice, lossis nce qib bilirubin yuav tsum tau txiav txim siab.

Kev siv qhov ntsuas pulse oximetry tsis yog tsuas yog nyeem cov duab digital xwb, tab sis kuj tseem muaj ntau dua, vim tias tsis yog txhua tus neeg mob uas muaj SpO2 tib yam muaj cov pa oxygen hauv cov ntshav.Qhov saturation ntawm 97% txhais tau hais tias 97% ntawm tag nrho cov hemoglobin nyob rau hauv lub cev yog sau nrog oxygen molecules.Yog li ntawd, cov pa oxygen saturation yuav tsum tau piav qhia nyob rau hauv cov ntsiab lus ntawm tus neeg mob tag nrho cov qib hemoglobin.Lwm qhov tseem ceeb uas cuam tshuam rau kev nyeem ntawv oximeter yog nruj npaum li cas hemoglobin khi rau oxygen, uas yuav txawv nrog kev hloov pauv ntawm ntau yam kev mob ntawm lub cev.


Post lub sij hawm: Jan-23-2021