PULSE oximetry theoretically tuaj yeem suav cov arterial hemoglobin oxygen saturation los ntawm qhov piv ntawm pulsatile mus rau tag nrho cov teeb liab kis tau los ntawm qhov sib piv rau lub teeb infrared transilluminating ntiv tes, pob ntseg, lossis lwm yam ntaub so ntswg.Lub saturation ntawm daim tawv nqaij yuav tsum yog ywj siab ntawm daim tawv nqaij pigmentation, thiab ntau lwm yam txawv, xws li hemoglobin concentration, ntsia thawv polish, av, thiab daj ntseg.Ntau cov kev tshawb fawb tswj loj piv rau cov neeg mob dub thiab dawb (380 cov ntsiab lus) 1,2 qhia tsis muaj qhov cuam tshuam loj ntawm cov xim hauv cov mem tes oximeters ntawm qhov qub saturation.
Txawm li cas los xij, Severinghaus thiab Kelleher3 tau tshuaj xyuas cov ntaub ntawv los ntawm ntau tus neeg tshawb xyuas uas tau tshaj tawm cov teeb meem tsis raug (+3 txog +5%) hauv cov neeg mob dub.4–7 Cov qauv simulations ntawm qhov tsis raug vim muaj ntau yam pigments raug tshuaj xyuas los ntawm Ralston.ua al.8 Coteua al.9 tau tshaj tawm tias cov ntsia thawv polish thiab number case rau ntawm daim tawv nqaij tuaj yeem ua rau qhov tsis raug, qhov kev tshawb pom tau lees paub los ntawm lwm tus los ntawm kev siv tus ntiv tes ntiv tes, 10 henna, 11 thiab meconium.12 Kev txhaj tshuaj dyes ua rau lub sijhawm tsis zoo.13 Leeua al.14 pom overestimation ntawm saturation, tshwj xeeb tshaj yog nyob rau hauv tsawg saturation nyob rau hauv cov neeg mob pigmented (Indian, Malayvs.Suav).Lub Technology Subcommittee ntawm Pab Pawg Ua Haujlwm ntawm Kev Saib Xyuas Tseem Ceeb, Ontario Ministry of Health, 15 tau tshaj tawm txog qhov tsis txaus ntseeg hauv cov mem tes oximetry ntawm qhov qis qis hauv cov ntsiab lus pigmented.Zeballos thiab Weisman16 piv qhov tseeb ntawm Hewlett-Packard (Sunnyvale, CA) pob ntseg oximeter thiab Biox II pulse oximeter (Ohmeda, Andover, MA) nyob rau hauv 33 cov tub ntxhais hluas dub qoj ib ce ntawm peb qhov sib txawv simulated qhov siab.Ntawm qhov siab ntawm 4,000 m, qhov twg arterial oxygen saturation (Sao2) ranged ntawm 75 txog 84%, Hewlett-Packard underestimated Sao2by 4.8 ± 1.6%, whereas Biox overestimated Sao2by 9.8 ± 1.8% (n = 22).Nws tau hais tias cov kev ua yuam kev no, yav dhau los qhia hauv cov neeg dawb, yog ob qho tib si exaggerated nyob rau hauv dub.
Thaum peb tau ntau xyoo ntawm kev sim pulse oximeter qhov tseeb ntawm cov pa saturations tsawg li 50%, peb muaj qee zaus tau sau tseg qhov tsis zoo siab tsis zoo, tshwj xeeb tshaj yog nyob rau qib qis heev, hauv qee qhov tab sis tsis yog nyob rau hauv lwm cov ntsiab lus tob pigmented.Qhov kev tshawb nrhiav no tau tsim tshwj xeeb los txiav txim siab seb qhov ua tsis raug ntawm Sao2 cuam tshuam nrog cov xim ntawm daim tawv nqaij.
Tag nrho cov pulse oximeters lag luam hauv Tebchaws Meskas yog xav tau los ntawm US Food and Drug Administration kom tau kuaj thiab tau lees paub tias yog qhov tseeb tsawg dua ± 3% hauv paus ntsiab lus square yuam kev ntawm Sao2values ntawm 70 thiab 100%.Feem ntau ntawm calibration thiab kev kuaj pom tseeb tau ua nyob rau hauv cov neeg tuaj yeem pab dawb nrog lub teeb ntawm daim tawv nqaij pigmentation.
Lub Chaw Tswj Xyuas Khoom Noj thiab Tshuaj tsis ntev los no tau qhia tias cov kev tshawb fawb ntawm pulse oximeter raug xa mus rau Food and Drug Administration kev pom zoo cov cuab yeej suav nrog cov ncauj lus nrog ntau yam ntawm daim tawv nqaij pigmentations, txawm tias tsis muaj qhov xav tau ntau npaum li cas.Peb paub tias tsis muaj cov ntaub ntawv uas txhawb nqa qhov kev txiav txim no.
Yog tias muaj qhov tseem ceeb thiab muaj txiaj ntsig zoo rov ua dua tshiab ntawm qhov qis qis hauv cov tawv nqaij tawv nqaij, suav nrog cov tawv nqaij tawv tawv yuav ua rau cov pab pawg xeem nce ntxiv txhais tau tias cov hauv paus txhais tau tias tsis raug, tej zaum txaus ua rau tsis lees paub los ntawm Food and Drug Administration.Yog tias pom muaj kev tsis ncaj ncees nyob ntawm qhov tsis txaus ntawm cov tawv nqaij tsaus nti hauv txhua qhov pulse oximeters, cov ntawv ceeb toom yuav tsum tau muab rau cov neeg siv, tejzaum nws nrog cov lus qhia kho.
Post lub sij hawm: Jan-07-2019