Kumvetsetsa Kuyesa kwa Sensor kwa SpO2

Wolemba Andrew Clay, Fluke Biomedical

Chidziwitso cha Mkonzi: Nkhaniyi, yolembedwa mu 2015, ikupitilizabe kuwerengedwa kwambiri24 × 7 patsamba la.Tikukhulupirira kuti ikhoza kukupatsani zambiri zomwe mukufuna mukamayesa SpO₂masensa.

Monitoring SpO₂, kuchuluka kwa okosijeni m'magazi, kwakhala njira yosamalira odwala padziko lonse lapansi.Pafupifupi wodwala aliyense wowunika ali ndi luso lokhazikika kapena lotha kuwunika chizindikiro chofunikira ichi.SPO₂ndi njira yosalunjika komanso yosasokoneza yoyezera kuchuluka kwa okosijeni m'magazi.Iyenera kuyesedwa limodzi ndi magawo ena onse amthupi panthawi yopewera kapena kukonza kukonza pa chowunikira odwala, kapena chipangizo choyimirira chokha.

The Technology

SpO₂Amapimidwa m’mbali mwake, nthawi zambiri ndi chala, ndipo ndi muyezo umodzi wa thanzi la mtima ndi kupuma.Mpweya wotchedwa pulse oximeter mosavutikira umayesa kuchuluka kwa okosijeni m'magazi a wodwala.Chipangizochi chimakhala ndi chowunikira chofiyira komanso cha infrared, zowunikira zithunzi, komanso chowunikira chomwe chimatumiza kuwala kudzera pabedi lowoneka bwino, lomwe nthawi zambiri limakhala ndi chala kapena nsonga ya mkutu.Hemoglobin ya okosijeni (O₂Hb) ndi deoxygenated hemoglobin (HHb) zimatenga kuwala kofiira ndi infrared mosiyana.Kuchuluka kwa machulukitsidwe a hemoglobin m'magazi otsika kumatha kuwerengedwa poyesa kusintha kwa kuyamwa kwa kuwala komwe kumachitika chifukwa cha kugunda kwa magazi.

Zinthu zosiyanasiyana zimatha kukhudza kulondola kwa SPO₂kuyeza, kuphatikizapo khungu, pigment, zilonda, zilonda, zizindikiro, kupukuta misomali, hypothermia, kuchepa kwa magazi, mankhwala, kusokoneza kuwala, ndi kuyenda.

SPO₂Amayezedwa pogwiritsa ntchito sensa, yomwe nthawi zambiri imamangiriridwa chala cha wodwalayo.Pali njira ziwiri za SpO₂teknoloji: transmissive and reflective.Njira yopatsirana ndiyo yomwe imagwiritsidwa ntchito kwambiri pa ziwirizi.Monga momwe tawonetsera m'chithunzi 1, teknoloji yotumizira mauthenga imatumiza kuwala kofiira ndi infrared kudzera pa chala kupita ku chojambulira zithunzi.

Chithunzi 1: Tekinoloje ya Transmissive, mawonekedwe omwe amagwiritsidwa ntchito kwambiri pachipatala cha pulse oximetry.Dinani kuti mukulitse.Njira ina yomwe imagwiritsidwa ntchito pa SPO₂zimadalira ukadaulo wowunikira.Monga momwe chithunzi 2 chikusonyezera, njirayi ili ndi chotumizira ndi cholandira mu ndege yomweyo.Chiwonetsero cha SPO₂masensa akhoza kuikidwa pa mbali zina za anatomy kuposa chala, monga pamphumi.

Chithunzi 2: Tekinoloje yowunikira, njira yosinthira miyeso yopatsirana.Dinani kuti mukulitse

Kuyesa

Aliyense wopanga chipangizo cha pulse oximetry ayenera kudziwa kulondola kwa chipangizo chawo poyesa anthu.Monga momwe Dennis J. McMahon akufotokozera mu pepala lake loyera, "Palibe Chinthu Chotere monga SpO.₂Simulator,"¹mu "kafukufuku woyendetsedwa ndi desaturation, anthu odzipereka amapumira motsatizana wa gasi wosakanikirana ndi kuchepa kwa okosijeni pomwe akulumikizidwa ndi chowunikira."Zitsanzo za magazi a arterial zimatengedwa kuchokera kwa anthu omwe akuphunzira kuti ayeze kuchuluka kwa okosijeni mu labotale yachipatala.

Zotsatira zakuyesaku ndi chithunzi cha mtundu womwewo wa SPO₂sensor ndi kuwunika.Grafu iyi imatchedwa R-curve.Monga momwe tawonetsera pa Chithunzi 3, R-curve ikufotokoza mgwirizano pakati pa chiyerekezo cha kuwala kofiira ndi infrared motsutsana ndi kuchuluka kwa okosijeni komwe kumasonkhanitsidwa panthawi yoyesedwa.R-curve imagwiritsidwa ntchito mu firmware pa chida china komanso SPO₂oyesa.

Chithunzi 3: Chitsanzo cha R-curve, yogwirizanitsa machulukitsidwe a O2 ndi mtengo wa R.Dinani kuti mukulitseSimulators, ma calibrator, ndi zoyezera magwiridwe antchito a pulse oximeter amatanthauzidwa mu ISO 80601-2-61.Mosiyana ndi mitundu ina yazida zamankhwala, ma pulse oximeter sanapangidwe kuti awonedwe kunja kwa fakitale.Palibe njira zovomerezeka zotsimikizira kuwongolera kolondola kwa pulse oximeter kupatula kuyesa kwamunthu.Zambiri za SpO₂zida zoyesera pamsika zili m'gulu la oyesa ntchito.

Malinga ndi Tobey Clarke m'buku lakeChitsimikizo cha Ubwino wa Zida Zachipatala, oyang'anira odwala ayenera kuyesedwa bwino chaka chilichonse.²Oyesa ntchito ambiri amayesa SPO₂sensor optically.Izi zimalola kuyesa kwa sensor, chingwe, ndi polojekiti.Oyesa ena ogwira ntchito amalowetsa chizindikiro mwachindunji ku polojekiti, ndikungoyesa chowunikira.Ena akhoza kuyesa chingwe kuti apitirize.Oyesa ntchito ambiri amangoyesa matekinoloje a transmissive, osati owunikira.

Mayendedwe wamba poyesa wowunikira wodwala kapena SPO yoyima yokha₂kuwunika kumaphatikizapo kuwunika momwe thupi lilili, kuyesa chitetezo chamagetsi, kukonza zodzitetezera zomwe zimapangidwa ndi wopanga, kuyesa magwiridwe antchito (kuphatikiza ma alarm ndi mayeso ena enieni), ndipo, pomaliza, kulemba zotsatira zoyesa.

Andrew Clay ndi manejala wotsatsa malonda a Fluke Biomedical, Everett, Wash.Nkhaniyi idasinthidwa kuchokera ku Fluke Biomedical whitepaper.

Maumboni

1. McMahon DJ.Palibe chinthu chonga SPO₂simulator.Everett, Sambani: Fluke Biomedical;2013. Ikupezeka pahttp://www.flukebiomedical.com/Biomedical/usen/Events/Promos/sp02-whitepaper-SOC.Adafikira pa Januware 15, 2015.

2. Clark JT, Lane M, Rafuse L.Chitsimikizo cha Ubwino wa Zida Zachipatala: Kupititsa patsogolo Pulogalamu Yoyendera ndi Njira.Everett, Sambani: Fluke Biomedical;2008:123.