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Momwe mungagwiritsire ntchito pulse oximeter kuyeza mpweya?

Pulse oximeterszomwe zimagwiritsidwa ntchito poyesa mpweya wa odwala muzochitika zosiyanasiyana zachipatala zakhala zida zowunikira kwambiri.Amapereka kuwunika kosalekeza, kosasunthika kwa kuchuluka kwa okosijeni wa hemoglobin m'magazi a arterial.Kugunda kulikonse kudzasintha zotsatira zake.

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Ma pulse oximeters samapereka chidziwitso chokhudza kuchuluka kwa hemoglobin, kutulutsa kwa mtima, mphamvu ya kuperekera kwa okosijeni ku minofu, kugwiritsa ntchito mpweya, kutulutsa mpweya, kapena mpweya wokwanira.Komabe, amapereka mwayi wowona nthawi yomweyo zopatuka kuchokera pagawo loyambira la okosijeni wa wodwalayo, monga chenjezo loyambirira kwa asing'anga kuti athandizire kupewa zotsatira za kukomoka komanso kuzindikira hypoxemia isanachitike osis.

Zapangidwa kuti ziwonjezere kugwiritsa ntchitopulse oximetersm'mawodi ambiri amatha kupangitsa kuti ikhale yofala ngati ma thermometers.Komabe, akunenedwa kuti ogwira ntchito ali ndi chidziwitso chochepa cha ntchito ya zipangizo, komanso chidziwitso chochepa cha mfundo zogwirira ntchito za zipangizo ndi zinthu zomwe zingakhudze kuwerengera.

Poyerekeza ndi kuchepa kwa hemoglobini, ma pulse oximeters amatha kuyeza mayamwidwe a kutalika kwake kwa kuwala mu hemoglobin wokhala ndi okosijeni.Magazi okhala ndi okosijeni amakhala ofiira chifukwa cha kuchuluka kwa hemoglobin ya okosijeni yomwe ili nayo, yomwe imalola kuti itenge kuwala kwina.The oximeter probe ili ndi ma diode awiri otulutsa kuwala (LED) mbali imodzi ya probe, imodzi yofiira ndi infrared imodzi.Chowunikiracho chimayikidwa pagawo loyenera la thupi, nthawi zambiri nsonga ya chala kapena khutu, ndipo LED imatumiza kutalika kwa kuwala kwa chithunzithunzi cha mbali ina ya probe kudzera m'magazi othamanga.Oxyhemoglobin imatenga kuwala kwa infuraredi;kuchepa kwa hemoglobin kumabweretsa kuwala kofiira.Magazi a pulsatile arterial mu systole amachititsa kuti hemoglobini ya okosijeni ilowe mu minofu, imatenga kuwala kwa infrared, ndikulola kuwala kochepa kufika pa photodetector.Kuchuluka kwa okosijeni m'magazi kumatsimikizira kuchuluka kwa kuyamwa kwa kuwala.Zotsatira zake zimasinthidwa kukhala chiwonetsero cha digito cha kuchuluka kwa okosijeni pawindo la oximeter, loyimiridwa ndi SpO2.

Pali opanga ambiri ndi zitsanzo za pulse oximeters.Zambiri zimapereka chiwonetsero cha mawonekedwe a digito, kugunda kwamtima komanso kugunda kwamtima, komanso zowunikira zosiyanasiyana kuti zigwirizane ndi anthu amsinkhu, kukula kapena kulemera.Kusankha kumadalira makonda omwe amagwiritsa ntchito.Ogwira ntchito onse omwe amagwiritsa ntchito ma pulse oximeter ayenera kumvetsetsa momwe amagwirira ntchito komanso kagwiritsidwe ntchito moyenera.

Kusanthula kwa mpweya wamagazi wamagazi ndikolondola kwambiri;komabe, pulse oximetry imaonedwa kuti ndiyolondola mokwanira pazifukwa zambiri zachipatala chifukwa cha zofooka zomwe zadziwika.

Mkhalidwe wa wodwala-Kuwerengera kusiyana pakati pa ma capillaries ndi ma capillaries opanda kanthu, oximetry imayesa kuyamwa kwa ma pulses angapo (nthawi zambiri asanu).Kuti azindikire kuthamanga kwa magazi, kutsekemera kokwanira kuyenera kuchitidwa m'dera loyang'aniridwa.Ngati kugunda kwapang'onopang'ono kwa wodwalayo kuli kofooka kapena kulibe, ndiye kutipulse oximeterkuwerenga sikudzakhala kolondola.Odwala omwe ali pachiwopsezo chachikulu cha hypoperfusion ndi omwe ali ndi hypotension, hypovolemia, hypothermia, komanso omwe akumangidwa kwamtima.Anthu omwe ali ndi chimfine koma osati hypothermia akhoza kukhala ndi vasoconstriction mu zala ndi zala zawo ndipo akhoza kusokoneza kutuluka kwa magazi.

Ngati kafukufukuyo akhazikika mwamphamvu kwambiri, kugunda kopanda mitsempha kumatha kuzindikirika, zomwe zimayambitsa kugunda kwa venous chala.Kuthamanga kwa venous kumayambikanso ndi kulephera kwa mtima kumbali yakumanja, tricuspid regurgitation, komanso kuthamanga kwa magazi pamwamba pa probe.

Arrhythmia ya mtima ingayambitse zotsatira zolakwika kwambiri, makamaka ngati pali kuchepa kwakukulu kwa nsonga / fupa.

Utoto wolowetsedwa m'mitsempha womwe umagwiritsidwa ntchito powunika ndi kuyesa kwa hemodynamic ungayambitse kuyerekezera kolakwika kwa kuchuluka kwa okosijeni, nthawi zambiri kutsika.Zotsatira za mtundu wa khungu, jaundice, kapena kuchuluka kwa bilirubin ziyenera kuganiziridwanso.

Kugwiritsa ntchito moyenera kuyeza kwa pulse oximetry sikumaphatikizapo kuwerenga mawonedwe a digito, komanso zambiri, chifukwa si odwala onse omwe ali ndi SpO2 omwe ali ndi mpweya wofanana m'magazi.Kuchuluka kwa 97% kumatanthauza kuti 97% ya hemoglobin yonse m'thupi imadzazidwa ndi mamolekyu a okosijeni.Chifukwa chake, kuchuluka kwa okosijeni kuyenera kufotokozedwa molingana ndi kuchuluka kwa hemoglobin wa wodwalayo.Chinthu chinanso chomwe chimakhudza kuwerengera kwa oximeter ndi momwe hemoglobini imamangirizira ku okosijeni, zomwe zimatha kusiyanasiyana ndi kusintha kwamitundu yosiyanasiyana ya thupi.


Nthawi yotumiza: Jan-23-2021