Iinzwa ze-oksijeni zisetyenziselwa ukulinganisa kunye nokubeka iliso kumanqanaba oxinzelelo lwe-oxygen, i-oksijini ekhutshwe kwaye ikhutshwe yisigulane esixhunywe kwi-ventilator okanye kumatshini we-anesthesia.
Inzwa ye-oksijini kwi-monitor yegesi yokuphefumula (RGM) ilinganisa i-oxygen concentration (okanye) i-oksijini yoxinzelelo oluyinxenye kumxube wegesi yokuphefumla.
I-oxygen sensors ziyaziwa nangokuthi i-fiO2 sensors okanye iibhetri ze-O2, kunye neqhezu le-oksijini e-inhaled (FiO2) kukuxinanisa kwe-oksijini kumxube wegesi.Iqhekeza le-oksijini ephefumlelweyo yomxube wegesi kwigumbi lomoya we-atmospheric yi-21%, oku kuthetha ukuba i-oksijeni yoxinaniso emoyeni wegumbi yi-21%.
Kutheni ii-RGMs zifuna inzwa ye-oxygen?
Konke ukujongwa kwegesi ephefumlayo kuyilelwe ukuhambisa umxube womoya kunye neoksijini ukungena nokuphuma kwimiphunga yesigulana ukuncedisa ngokuphefumla, okanye kwezinye iimeko, ukubonelela ngokuphefumla ngoomatshini kwisigulana esiphefumla ngokungonelanga okanye umzimba ongakwaziyo ukuphefumla.
Ngexesha lokungenisa umoya, umlinganiselo ochanekileyo womxube wegesi yokuphefumla uyafuneka.Ngokukodwa, ukulinganisa ioksijini ngexesha lokungena komoya kubalulekile ngenxa yokubaluleka kwayo kwimetabolism.Kule meko, i-sensor ye-oxygen isetyenziselwa ukulawula kunye nokubona ukunikezelwa kwe-oksijeni yesigulane.Imfuno ephambili kukubonelela ngomlinganiselo ophezulu wokuchaneka komxholo we-oksijini kwiigesi zokuphefumla.Iindlela ezahlukeneyo zeeSensors zeOxygen yezoNyango
Iinzwa ze-Electrochemical
Inzwa ye-oxygen ene-Fluorescent
1. Inzwa yeoksijini ye-Electrochemical
Izinto zokuva ioksijini ye-Electrochemical zisetyenziswa ikakhulu ukulinganisa umxholo weoksijini kumoya ongqongileyo.Ezi zinzwa zihlanganiswe kumatshini we-RGM ukulinganisa ukuxinwa kokunikezelwa kwe-oxygen.Bashiya utshintsho lweekhemikhali kwindawo yokuva, okukhokelela ekuphumeni kombane ngokulinganayo kwinqanaba le-oxygen.Izinzwa ze-Electrochemical ziguqula amandla ekhemikhali abe ngamandla ombane ngokusebenzisa i-oxidation kunye neenkqubo zokunciphisa.Inika imveliso yombane kwisixhobo ngokulinganayo nepesenti ye-oxygen kwi-cathode kunye ne-anode.I-sensor ye-oxygen isebenza njengomthombo wangoku, ngoko ke umlinganiselo we-voltage wenziwa ngokumelana nomthwalo.Imveliso yangoku ye-oxygen sensor ilingana nezinga lokusetyenziswa kwe-oksijini yinzwa ye-oxygen.
2. Inzwa ye-oxygen ene-Fluorescent
I-Optical sensors ye-oxygen isekelwe kumgaqo we-fluorescence yokucima i-oxygen.Bathembele ekusetyenzisweni kwemithombo yokukhanya, izixhobo zokukhanya kunye nezinto ezikhanyayo ezisabela ekukhanyeni.I-Luminescence-based sensors ye-oxygen ithatha indawo ye-electrochemical oxygen sensors kwiindawo ezininzi.
Umgaqo we-molecular oxygen fluorescence quenching uyaziwa kudala.Ezinye iimolekyuli okanye iikhompawundi ze-fluoresce (oko kukuthi, zikhupha amandla okukhanya) xa zibekwe ekukhanyeni.Nangona kunjalo, ukuba iimolekyuli ze-oksijini zikhona, amandla okukhanya adluliselwa kwiimolekyuli ze-oksijini, okukhokelela kwi-fluorescence encinci.Ngokusebenzisa umthombo wokukhanya owaziwayo, amandla okukhanya afunyenweyo ahambelana ngokungafaniyo nenani leemolekyuli zeoksijini kwisampulu.Ke ngoko, i-fluorescence encinci ifunyenwe, kokukhona iimolekyuli zeoksijini kufuneka zibekho kwisampulu yegesi.
Ixesha lokuposa: Aug-05-2022