Kungani ama-ventilators kanye namajeneretha komoyampilo edinga ukufanisa nemingcele ye-blood oxygen?
I-ventilator iyidivayisi engafaka esikhundleni noma ithuthukise ukuphefumula komuntu, ikhuphule umoya wamaphaphu, ithuthukise ukusebenza kokuphefumula, futhi yehlise ukusetshenziswa komsebenzi wokuphefumula. Ngokuvamile isetshenziselwa iziguli ezinokwehluleka kwamaphaphu noma ukuvinjwa kwendlela yokuphefumula ezingakwazi ukuphefumula ngendlela evamile. Umsebenzi wokuphefumula kanye nokukhipha umoya womzimba womuntu usiza isiguli ukuba siqedele inqubo yokuphefumula yokukhipha umoya nokuhogela.
Ijeneretha ye-oxygen iwumshini ophephile futhi okahle wokukhipha umoya-mpilo ohlanzekile ogcwele ukugxila okuphezulu. Kuyijeneretha ye-oksijini ebonakalayo emsulwa, icindezela futhi ihlanze umoya ukuze kukhiqizwe umoya-mpilo, bese iyawuhlanza futhi iwuhambise esigulini. Ilungele izifo zesistimu yokuphefumula, izifo zenhliziyo nobuchopho. Ezigulini ezinesifo se-vascular kanye ne-altitude hypoxia, ikakhulukazi ukuxazulula izimpawu ze-hypoxia.
Kuyaziwa ukuthi iningi leziguli ezishonile ezine-Covid-19 pneumonia zinokuhluleka kwezitho eziningi okubangelwa i-sepsis, futhi ukubonakaliswa kokwehluleka kwezitho eziningi emaphashini kuyi-acute Respiratory Distress Syndrome ARDS, izinga lezehlakalo elisondele ku-100% . Ngakho-ke, ukwelashwa kwe-ARDS kungathiwa kugxile ekwelashweni okusekela iziguli ezine-Covid-19 pneumonia. Uma i-ARDS ingaphathwa kahle, isiguli singase sishone maduzane. Ngesikhathi sokwelashwa kwe-ARDS, uma ukugcwala komoyampilo kwesiguli kusephansi nge-cannula yamakhala, udokotela uzosebenzisa i-ventilator ukusiza isiguli siphefumule, okubizwa ngokuthi i-mechanical ventilation. Ukungenisa komoya ngemishini kuphinde kuhlukaniswe kube umoya osizayo ongenelayo kanye nokungena komoya okungenakuhlasela. Umehluko phakathi kwakho kokubili intubation.
Eqinisweni, ngaphambi kokugqashuka kwe-pneumonia ye-Covid-19, "ukwelashwa nge-oxygen" bekuvele kuwukwelashwa okubalulekile kweziguli ezinezifo zokuphefumula nezenhliziyo. Ukwelashwa komoyampilo kubhekisela ekwelapheni kokuhogela umoya-mpilo ukuze kwandiswe amazinga komoyampilo egazini futhi kulungele zonke iziguli ezine-hypoxic. Phakathi kwazo, izifo zesimiso sokuphefumula kanye nesimiso senhliziyo yizifo eziyinhloko, ikakhulukazi ekwelapheni isifo esingapheliyo se-obstructive pulmonary (COPD), ukwelashwa kwe-oxygen kusetshenziswe njengendlela yokwelapha ebalulekile ye-adjuvant emndenini nakwezinye izindawo.
Kungakhathaliseki ukuthi ukwelashwa kwe-ARDS noma ukwelashwa kwe-COPD, kokubili ama-ventilators nama-concentrator komoyampilo kuyadingeka. Ukuze unqume ukuthi kuyadingeka yini ukusebenzisa i-ventilator yangaphandle ukusiza ukuphefumula kwesiguli, kuyadingeka ukuqapha ukugcwala komoyampilo wesiguli phakathi nayo yonke inqubo yokwelashwa ukuze kutholwe umphumela “wokwelashwa komoya-mpilo”.
Nakuba ukuhogela komoya-mpilo kunenzuzo emzimbeni, ukulimala kobuthi be-oksijini akunakunakwa. Ubuthi be-oksijeni bubhekisela esifweni esibonakaliswa izinguquko ze-pathological ekusebenzeni nasekwakhekeni kwezinhlelo ezithile noma izitho ezithile ngemva kokuba umzimba uhogele umoya-mpilo ngaphezu kokucindezela okuthile isikhathi esithile. Ngakho-ke, isikhathi sokuphefumula komoya-mpilo kanye nokuhlushwa komoya-mpilo wesiguli kungalawulwa ngokuqapha ukugcwala komoya-mpilo egazini ngesikhathi sangempela.
Isikhathi sokuthumela: Feb-10-2023
