Izinga le-oxygen egazini (i-arterial blood oxygen content) libonisa izinga lomoya-mpilo okhona egazini eligeleza emithanjeni yomzimba.Ukuhlolwa kwe-ABG kusebenzisa igazi elithathwe emithanjeni, elingalinganiswa ngaphambi kokuba lingene ezicutshini zomuntu.Igazi lizofakwa emshinini we-ABG (i-blood gas analyzer), ehlinzeka ngamazinga e-oxygen egazini ngendlela yokucindezela okuyingxenye ye-oksijeni (i-oxygen partial pressure).
I-Hyperroxaemia ivamise ukutholwa kusetshenziswa ukuhlolwa kwe-ABG, okuchazwa njengamazinga komoyampilo wegazi angaphezu kuka-120 mmHg.Umfutho ojwayelekile we-arterial oxygen (PaO2) okalwa kusetshenziswa ukuhlolwa kwe-arterial blood gas (ABG) cishe u-75 kuya ku-100 mmHg (75-100 mmHg).Uma izinga lingaphansi kuka-75 mmHg, lesi simo ngokuvamile sibizwa ngokuthi i-hypoxemia.Amazinga angaphansi kuka-60 mmHg abhekwa aphansi kakhulu futhi abonisa isidingo somoya-mpilo owengeziwe.I-oxygen eyengeziwe inikezwa ngesilinda somoya-mpilo, esixhunywe ekhaleni ngeshubhu elinemaski noma ngaphandle kwayo.
Kufanele kube yini okuqukethwe komoyampilo?
Amazinga komoyampilo wegazi nawo angalinganiswa kusetshenziswa insimbi ebizwa ngokuthi i-pulse oximeter.Izinga le-oxygen elivamile ku-oximeter ye-pulse ngokuvamile lingama-95% kuya ku-100%.Ngaphansi kwama-90% wamazinga komoyampilo wegazi aphansi (hypoxemia).I-Hyperroxaemia ivamise ukutholwa ukuhlolwa kwe-ABG, okuchazwa njengamazinga komoyampilo wegazi angaphezu kuka-120 mmHg.Lokhu kuvame ukuba sesibhedlela, lapho isiguli sibhekene nokucindezela okukhulu kwe-oksijeni eyengeziwe isikhathi eside (amahora angu-3 kuya kwangu-10 noma ngaphezulu).
Yini eyenza izinga le-oxygen egazini lehle?
Amazinga komoyampilo wegazi angase ehle ngenxa yanoma yiziphi izinkinga ezilandelayo:
Okuqukethwe komoyampilo emoyeni kuphansi: Ezindaweni eziphakeme njengezindawo zezintaba, umoya-mpilo osemkhathini uphansi kakhulu.
Amandla omzimba womuntu okumunca umoya-mpilo ayancipha: Lokhu kungase kubangelwe izifo zamaphaphu ezilandelayo:Isifuba somoya, i-emphysema (ukulimala kwamasaka omoya emaphashini), ukucinana kwemigudu yokuphefumula, inyumoniya, i-pneumothorax (ukuvuza komoya phakathi kwamaphaphu nodonga lwesifuba), kubi kakhulu. i-respiratory distress syndrome (ARDS), i-pulmonary edema (ngenxa yokuvuvukala kwamaphaphu anqwabelene), i-Pulmonary fibrosis (izibazi zamaphaphu), isifo se-interstitial lung (inani elikhulu lezifo zamaphaphu ezivame ukubangela ukuqhuma okuqhubekayo kwamaphaphu), izifo ezibangelwa amagciwane, ezifana njenge-COVID-19
Ezinye izimo zihlanganisa: i-anemia, i-apnea yokulala (ukulala ngenkathi uphefumula okwesikhashana), ukubhema.
Amandla enhliziyo okunikeza umoya-mpilo emaphashini ayancipha: imbangela evame kakhulu isifo senhliziyo sokuzalwa (ukukhubazeka kwenhliziyo ngesikhathi sokuzalwa).
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Isikhathi sokuthumela: Feb-25-2021