I-oxygen saturation-ngamanye amaxesha abizwa ngokuba yi-O sats, okanye ngokulula, i-sats-ibhekisela kumlinganiselo apho i-hemoglobin igcwele umoya-mpilo. I-Hemoglobin yinto egazini elibopha umoya-mpilo ukuze liqhube ngegazi kwizitho, izicubu kunye namaseli omzimba. I-oxygen saturation eqhelekileyo iphakathi kwama-96 ekhulwini kunye nama-98 ekhulwini.
Ngamanye amangqamuzana egazi abomvu aqukethe ii-molecule ze-hemoglobin ezine.
Intsimbi, ekhoyo kwi-hemoglobin, yintoni i-oksijeni ebophezela ngayo emva kokusasazeka kwi-alveoli emaphaphini nakwi-capillaries yemiphaphu. Uninzi lwexesha le hemoglobin ligcwele ngokupheleleyo.
I-oxygen saturation ixhomekeke kulo:
- Ukufumaneka kwe-oksijeni.
- Ukutshintshwa kweGesi emiphakeni: Ikhono le-oksijini ukufikelela kwi-alveoli, kunye kanye kwi-alveoli, ukusabalalisa ngeendonga ze-alveoli kunye ne-capillary ukufikelela kwiiseli ezibomvu zegazi.
- Ukuxinwa kwe-hemoglobin kwiiseli ezibomvu zegazi.
- Ukuxhamla kwe-hemoglobin ye-oksijeni, ngamanye amazwi, indlela i-hemoglobin enamandla ithatha ngayo i-oxygen.
Ukulinganisa i-oksijeni
Ugcino lwe-oksijeni luqheleke ngoku:
- Igazi legazi liyachithwa: Ixabiso elifunyenwe kwigazi elijongene negazi okanye i-ABG's (iSaO2) ichaza i-oxygen saturation yegazi lokuguqula igazi, kwaye ifunyenwe ngokukhipha igazi emthonjeni onjenge-radial umthambo kwisikristsi okanye umthambo wesigxina kwi-groin.
- I-oximetry ye-Pulse: Ixabiso elifunyenwe kwigazi le-capillary ye-peripherry usebenzisa i-pulse oximetry (SpO2) ngokuqhelekileyo libonisa ngokucacileyo amanqanaba atholakala kwigazi elichaphazelekayo. I-oximetry ye-Pulse inomsebenzi wokuba uvavanyo olungenayo intshabalalisayo, olusebenzisa isalathisi esiqhotyoshelwe kumunwe okanye kwi-earlobe okanye kwezinye iindawo zomzimba ezifunda ubude obuphezulu bokukhanya obuboniswa egazini. Akunjalo nje kuphela i-pulse oximeters kumgangatho ngoku ukubeka iliso kubantu esibhedlele, kodwa abantu banokulandela ukuzaliswa kwabo ngokwenza iteknoloji egugukayo.
Ukunciphisa Oxygen Saturation
Ukuhla kwezinga le-oxygen saturation kubhekiswa kwi-deaturation, okanye i-hypoxemia, kwaye kunokubangelwa nayiphi na utshintsho okanye umonakalo kwiimpawu ezingentla.
- Utshintsho kwi-oksijeni ukufumaneka lunokubangela ukucutha kwe-oksijini enomoya ophefumlelweyo njengendawo ephakamileyo kwaye xa usindiza kwi-moya.
- Iingxaki zokutshintshwa kwegesi ezenza ukuncipha kwe-oksijiti yokuzalisa ingabandakanya nantoni na eyanciphisa amandla oksijini ukuhamba ukusuka emoyeni wangaphandle ukuya kwi-alveoli yemizimba yethu okanye ngethuba lokudluliselwa kwe-oksijini ukusuka kwi -alveoli ukuya kwi-capillaries yegazi .
- Ukuncipha kwe-oksijeni ye-oxygen kungabangela ukuxilongwa kwe-hemoglobin ephantsi, njengokwenqaba kwe-anemia .
- Ukunciphisa i-hemoglobin ye-oksijini ingenzeka xa kukho enye into ekhoyo ebophelela ngakumbi kwi-hemoglobin kunokuba i-oksijeni, njengokheyi-carbon monoxide apho i-carboxyhemoglobin ihlanganiswe.
Hypoxemia kunye neHypoxia
Iimpawu ze-hypoxemia kunye ne-hypoxia zidla ngokusetyenziswa ngokuthe tye kodwa zithetha izinto ezahlukeneyo. I-Hypoxemia yigama elichaza ukucutha kwe-oxygen egazini. I-Hypoxia, kwakhona, ichaza imiphumo eyenzeka ngenxa ye-hypocemia.
Xa iiseli azifumani oksijini okwaneleyo, ziyakwazi ukuvumelanisa ukuba ukusilela kuncinci. Nangona kunjalo, ngokusilela okukhulu, umphumo ngumonakalo weseli kulandelwa ukufa kweseli.
I-Hypoxia idla ngokubangelwa yi-hypoxemia, kodwa inokwenzeka kwakhona xa:
- Kukho i-anemia kuba kukho ambalwa amangqamuzana egazi abomvu ukwenzela ukuba igazi le-oksijeni ngokupheleleyo lithethi i-oksijeni eyaneleyo kwimizimba.
- Kukho ukugeleza kwegazi okwaneleyo ngoko ke igazi elipheleleyo le-oxygen alifikeli iifom.
- Iimfucu azikwazi ukusebenzisa igazi elisebenzayo.
- Izicubu zifuna igazi elingaphezulu kune-oksijini ngaphandle kokunikwa, njengezifo ezikhuselekileyo.
Ukunyanga i-Hypoxemia ne-Hypoxia ngenxa ye-Hypoxemia
Xa i-oxygen saturation yehla ngaphantsi kwinqanaba elithile, i- oksijeni yonyango iyongezwa, kwaye ngamanye amaxesha ngokukhawuleza. Kwakhona kubalulekile ukucacisa imbangela yokugcwalisa i-oxygen ephantsi. Ukunyangwa kwesizathu esisisiseko kukuba yinjongo ephambili yonyango.
Umthombo
- Collins, J., Rudenski, A., Gibson, J., Howard, L., noRo O'Driscoll. Ukuxinzelela i-oksijeni yenkxalabo yecandelo, ukugcwala, kunye nomxholo: ikhefu lokuhlukanisa i-hemoglobin-oxygen. Phefumla . 2005. INGXELO: 10.1183 / 20734735.001415.