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Ungayisebenzisa kanjani kahle i-pulse oximeter ukukala umoya-mpilo?

I-Pulse oximetersesetshenziselwa ukuhlola isimo se-oxygen seziguli ezindaweni ezihlukahlukene zomtholampilo seziye zaba imishini yokuqapha evamile.Inikeza ukuqapha okuqhubekayo, okungahlaseli kwe-hemoglobin oxygen saturation egazini le-arterial.Igagasi le-pulse ngalinye lizobuyekeza umphumela walo.

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Ama-pulse oximeter awanikezi ulwazi mayelana nokugxiliswa kwe-hemoglobin, ukuphuma kwenhliziyo, ukusebenza kahle kokulethwa komoyampilo ezicutshini, ukusetshenziswa komoya-mpilo, umoya-mpilo, noma ukungena komoya okwanele.Kodwa-ke, zinikeza ithuba lokuqaphela ngokushesha ukuchezuka kusisekelo somoya-mpilo wesiguli, njengesignali yesixwayiso sangaphambi kwesikhathi kubahlengikazi ukuze basize ukuvimbela imiphumela yokuphelelwa umoya nokubona i-hypoxemia ngaphambi kokuvela kwe-osis.

Kuye kwaphakanyiswa ukuthi ukwandisa ukusetshenziswa kwei-pulse oximetersezigcemeni ezijwayelekile zingenza kube yinto evamile njengama-thermometers.Kodwa-ke, kubikwa ukuthi abasebenzi banolwazi olulinganiselwe ngokusebenza kwemishini, nolwazi oluncane lwesimiso sokusebenza kwemishini kanye nezici ezingase zithinte ukufundwa.

Uma kuqhathaniswa ne-hemoglobin encishisiwe, ama-pulse oximeters angakala ukumuncwa kwamaza okukhanya athile ku-hemoglobin ene-oxidized.I-Arterial oxygenated blood ibomvu ngenxa yenqwaba ye-oksijini ye-hemoglobin equkethe, eyivumela ukuthi imunce amaza okukhanya athile.I-oximeter probe inama-light-emitting diode (LED) amabili ohlangothini olulodwa lwe-probe, eyodwa ebomvu neyodwa infrared.I-probe ibekwe endaweni efanelekile yomzimba, ngokuvamile iminwe yomunwe noma indlebe, futhi i-LED idlulisa ubude begagasi bokukhanya kusithwebuli sezithombe esikolunye uhlangothi lwe-probe ngegazi le-arterial elishayayo.I-oxyhemoglobin ibamba ukukhanya kwe-infrared;ukuncipha kwe-hemoglobin kubangela ukukhanya okubomvu.Igazi le-pulsatile arterial ku-systole lenza ukuthi i-hemoglobin ene-oksijini igelezele esicutshini, imunce ukukhanya kwe-infrared okwengeziwe, futhi ivumele ukukhanya okuncane ukuthi kufinyelele kusithwebuli sezithombe.Ukugcwala komoyampilo egazini kunquma izinga lokumunca ukukhanya.Umphumela ucutshungulwa ekubonisweni kwedijithali kokugcwaliswa komoyampilo esikrinini se-oximeter, esimelwe yi-SpO2.

Kukhona abakhiqizi abaningi namamodeli we-pulse oximeters.Iningi lihlinzeka ngokuboniswa kwe-waveform yedijithali ebonakalayo, isigqi esizwakalayo se-arterial beat nesibonisi sezinga lenhliziyo, nezinzwa ezihlukahlukene ukuze zifanele abantu ngabanye ubudala, usayizi noma isisindo.Inketho incike kuzilungiselelo eziyisebenzisayo.Bonke abasebenzi abasebenzisa ama-pulse oximeters kumele baqonde ukusebenza kwawo kanye nokusetshenziswa okufanele.

Ukuhlaziywa kwe-arterial gas blood gas kunembe kakhulu;Nokho, i-pulse oximetry ibhekwa njengenembe ngokwanele ngezinjongo eziningi zomtholampilo ngenxa yokulinganiselwa okuye kwaqashelwa.

Isimo sesiguli-Ukuze ubale umehluko phakathi kwama-capillary nama-capillary angenalutho, i-oximetry ikala ukumuncwa kokukhanya kwama-pulses amaningi (ngokuvamile amahlanu).Ukuze kutholwe ukugeleza kwegazi elishayayo, ukugcotshwa okwanele kufanele kwenziwe endaweni egadiwe.Uma i-peripheral pulse yesiguli ibuthakathaka noma ingekho, i-i-pulse oximeterukufunda ngeke kunembile.Iziguli ezisengcupheni enkulu ye-hypoperfusion yilezo ezine-hypotension, i-hypovolemia, ne-hypothermia, nalabo ababoshwe yinhliziyo.Abantu abanomkhuhlane kodwa hhayi i-hypothermia bangase babe ne-vasoconstriction eminwe yabo nasezinzwaneni futhi bangase baphazamise ukugeleza kwegazi kwe-arterial.

Uma uphenyo luqiniswe kakhulu, kungase kubonakale ukushaya kwemithambo okungeyona i-arterial, okubangele ukushayeka kwe-venous emunweni.Ukushaya kwe-venous kuphinde kubangelwe ukuhluleka kwenhliziyo ohlangothini lwesokudla, i-tricuspid regurgitation, kanye ne-tourniquet ye-blood pressure cuff ngaphezu kwe-probe.

I-arrhythmia yenhliziyo ingabangela imiphumela yokulinganisa engalungile, ikakhulukazi uma kukhona ukushoda okukhulu kwe-apex/bone.

Odayi abafakwa emthanjeni osetshenziswa ekuxilongeni nasekuhloleni i-hemodynamic bangabangela izilinganiso ezingalungile zokugcwala komoyampilo, ngokuvamile okuphansi.Imiphumela ye-pigmentation yesikhumba, i-jaundice, noma amazinga aphezulu e-bilirubin kufanele kucatshangelwe.

Ukusetshenziswa okulungile kokulinganisa kwe-pulse oximetry akubandakanyi ukufunda isibonisi sedijithali kuphela, kodwa futhi nangaphezulu, ngoba akuzona zonke iziguli ezine-SpO2 ezifanayo ezinokuqukethwe kwe-oxygen okufanayo egazini.Ukugcwala kwe-97% kusho ukuthi u-97% wesamba se-hemoglobin emzimbeni ugcwele ama-molecule e-oxygen.Ngakho-ke, ukugcwala komoyampilo kufanele kuchazwe kumongo wezinga le-hemoglobin eliphelele lesiguli.Esinye isici esithinta ukufundwa kwe-oximeter yindlela i-hemoglobin ebopha ngayo umoya-mpilo, engase ihluke ngokushintsha kwezimo ezihlukahlukene zomzimba.


Isikhathi sokuthumela: Jan-23-2021