PULSE oximetry ne theoretically inogona ku compte arterial hemoglobin oxygen saturation kubva pareshiyo ye pulsatile kusvika ku total transmited red light yakakamurwa nereshiyo imwechete ye infrared light transilluminating munwe, nzeve, kana imwe matishu.Iyo yakatorwa saturation inofanirwa kuve yakazvimirira yeganda pigmentation, uye zvimwe zvakawanda zvakasiyana, senge hemoglobin concentration, mbambo yezvipikiri, tsvina, uye jaundice.Zvidzidzo zvakati wandei zvakadzorwa zvichienzanisa varwere vatema nevachena (380 zvidzidzo) 1,2 yakashuma kuti hapana zvikanganiso zvakakura zvine chekuita nepigment mumapulse oximeters panguva yakajairika saturation.
Zvisinei, Severinghaus naKelleher3 vakaongorora dheta kubva kune vatsvakurudzi vanoverengeka vakanga vataura zvikanganiso zveanecdotal (+ 3 kusvika + 5%) muvarwere vatema.4-7 Muenzaniso wekuenzanisa kwezvikanganiso nekuda kwemavara akasiyana-siyana akaongororwa naRalston.et al.8 Coteet al.9 yakashuma kuti mbambo yezvipikiri neingi pamusoro peganda zvinogona kukonzera kukanganisa, kuwanikwa kunosimbiswa zvisingaverengeki nevamwe kubva paminwe yeinki, 10 henna, 11 uye meconium.12 Dhayi dzinoiswa mutsinga dzinokonzera kukanganisa kwenguva pfupi.13 Leeet al.14 yakawana overestimation yekuzara, kunyanya pakuzara kwakadzika muvarwere vane pigmented (Indian, Malayvs.ChiChinese).The Technology Subcommittee yeBasa Rinoshanda paCritical Care, Ontario Ministry of Health,15 yakashuma zvikanganiso zvisingagamuchirwe mupulse oximetry pakuzara kwakaderera muzvidzidzo zvine pigmented.Zeballos naWeisman16 vakaenzanisa chokwadi cheHewlett-Packard (Sunnyvale, CA) ear oximeter uye Biox II pulse oximeter (Ohmeda, Andover, MA) mumakumi matatu nenhatu majaya evatema ari kurovedza muviri munzvimbo nhatu dzakasiyana dzakasimudzwa.Panzvimbo yakakwirira ye 4,000 m, apo arterial oxygen saturation (Sao2) yakabva ku75 kusvika ku84%, Hewlett-Packard yakaderera Sao2by 4.8 ± 1.6%, nepo Biox yakanyanyisa Sao2by 9.8 ± 1.8% (n = 22).Zvakanzi zvikanganiso izvi, zvakambotaurwa kuvachena, zvose zvakawedzeredzwa muvatema.
Mukati memakore edu mazhinji ekuyedza pulse oximeter kurongeka kweokisijeni yakadzikira kusvika pa50%, isu takambocherekedza kusarudzika kwakanyanya kwakanaka, kunyanya pamazinga akaderera ekuzara, mune zvimwe asi kwete mune zvimwe zvidzidzo zvine pigmented.Tsvagiridzo iyi saka yakanyatsogadzirirwa kuona kana zvikanganiso zviri pazasi Sao2correlate neruvara rweganda.
Ese pulse oximeters anotengeswa muUnited States anodiwa neUS Food and Drug Administration kuti aedzwe uye apihwe certifti yechokwadi isingasviki ± 3% midzi inoreva square error paSao2values pakati pe70 ne100%.Iyo yakawanda yecalibration uye yekusimbisa bvunzo yakaitwa muzvidzidzo zvekuzvipira zvine mwenje weganda pigmentation.
Chikafu neDrug Administration nguva pfupi yadarika yakurudzira kuti zvidzidzo zvepulse oximeter chaiyo yakaunzwa kuti ibvumidzwe neChikafu neDrug Administration mudziyo zvinosanganisira zvidzidzo zvine huwandu hweganda pigmentation, kunyangwe pasina huwandu hunodiwa hwakagoverwa.Isu tinoziva hapana data inotsigira chiitiko ichi.
Kana paine kurerekera kwakakosha uye kunoberekana kwakanaka pakuzara kwakaderera muzvidzidzo zvine ganda rakasviba, kubatanidzwa kwevatema-ganda zvidzidzo kuchawedzera test boka zvinoreva midzi mativi zvikanganiso, zvichida zvakakwana kukonzera kurambwa neFood and Drug Administration.Kana rusaruro rwunogoneka ruchiwanikwa pakuzara kwakaderera muzvidzidzo zvine ganda rakasviba mune ese pulse oximeters, mavara eyambiro anofanirwa kupihwa kune vashandisi, pamwe neakakurudzirwa kugadzirisa zvinhu.
Nguva yekutumira: Jan-07-2019