Kuchuluka kwa oxygen m'magazi (SpO2)

SPO2akhoza kugawidwa m'zigawo zotsatirazi: "S" amatanthauza machulukitsidwe, "P" amatanthauza kugunda, ndipo "O2" amatanthauza mpweya.Chidule ichi chimayesa kuchuluka kwa okosijeni wolumikizidwa ku maselo a hemoglobin m'magawo amagazi.Mwachidule, mtengo umenewu umatanthawuza kuchuluka kwa mpweya wotengedwa ndi maselo ofiira a magazi.Kuyeza kumeneku kumasonyeza mphamvu ya kupuma kwa wodwalayo komanso kuyendetsa bwino kwa magazi m'thupi lonse.Kuchuluka kwa okosijeni kumagwiritsidwa ntchito ngati peresenti kusonyeza zotsatira za muyeso uwu.Kuwerenga kwapakati kwa munthu wamkulu wathanzi labwino ndi 96%.

Kuchuluka kwa okosijeni m'magazi kumayesedwa pogwiritsa ntchito pulse oximeter, yomwe imaphatikizapo chowunikira pakompyuta ndi ma cuffs a zala.Mabedi a zala amatha kumangika pa zala za wodwalayo, zala zake, mphuno kapena makutu.Kenako wowunikirayo amawonetsa kuwerenga kosonyeza kuchuluka kwa okosijeni m'magazi a wodwalayo.Izi zimachitika pogwiritsa ntchito mafunde owoneka bwino komanso zizindikiro zomveka, zomwe zimagwirizana ndi kugunda kwa wodwalayo.Pamene kuchuluka kwa okosijeni m'magazi kumatsika, mphamvu ya chizindikiro imachepa.Woyang'anira akuwonetsanso kugunda kwa mtima ndipo ali ndi alamu, pamene kugunda kumathamanga kwambiri / pang'onopang'ono ndipo machulukidwe ali okwera kwambiri / otsika, chizindikiro cha alamu chimaperekedwa.

Thechipangizo cha oxygen machulukitsidwe magaziamayesa magazi okosijeni ndi magazi a hypoxic.Ma frequency awiri osiyanasiyana amagwiritsidwa ntchito kuyeza mitundu iwiri ya magazi: ofiira ndi ma infrared frequency.Njira imeneyi imatchedwa spectrophotometry.Ma frequency ofiira amagwiritsidwa ntchito kuyeza hemoglobin ya desaturated, ndipo ma frequency a infrared amagwiritsidwa ntchito kuyeza magazi okhala ndi okosijeni.Ngati ikuwonetsa kuyamwa kwakukulu mu bandi ya infuraredi, izi zikuwonetsa machulukitsidwe apamwamba.Mosiyana ndi zimenezi, ngati kuyamwa kwakukulu kukuwonetsedwa mu gulu lofiira, izi zimasonyeza kutsika kochepa.

Kuwala kumafalikira kudzera pa chala, ndipo kuwala kwapatsirana kumayang'aniridwa ndi wolandira.Kuwala kwina kumeneku kumatengedwa ndi minyewa ndi magazi, ndipo mitsempha ikadzazidwa ndi magazi, kuyamwa kumawonjezeka.Mofananamo, pamene mitsempha ilibe kanthu, mlingo wa kuyamwa umatsika.Chifukwa pakugwiritsa ntchito, chosinthika chokha ndikutuluka kwamphamvu, gawo lokhazikika (mwachitsanzo, khungu ndi minofu) limatha kuchotsedwa pakuwerengera.Choncho, pogwiritsa ntchito mafunde awiri a kuwala komwe amasonkhanitsidwa muyeso, pulse oximeter imawerengera kuchuluka kwa hemoglobin ya okosijeni.

97% machulukitsidwe = 97% mpweya pang'ono kuthamanga (zabwinobwino)

90% machulukitsidwe = 60% mpweya pang'ono kuthamanga (zoopsa)

80% machulukitsidwe = 45% kupanikizika pang'ono kwa okosijeni wamagazi (hypoxia yayikulu)