Vanhu vanosvika mamiriyoni makumi masere vanogara munzvimbo dziri pamusoro pe2,500 metres pamusoro pegungwa. Sezvo kukwira kunowedzera, mweya wemhepo unodzikira, zvichikonzera kuderera kweokisijeni chikamu chekumanikidza, izvo zvinogona kukonzeresa zvirwere zvakanyanya, kunyanya zvirwere zvemoyo. Kugara munzvimbo yakaderera-kudzvanywa kwenguva yakareba, muviri wemunhu uchaita shanduko inoshanduka, senge right ventricular hypertrophy, kuchengetedza kutenderera uye tishu homeostasis.
"Kudzvinyirira kwakaderera" uye "hypoxia" zvine hukama hwepedyo mumuviri wemunhu. Iyo yekutanga inotungamirira kune yekupedzisira, inokonzera kukanganisa kwakakwana kumuviri wemunhu, kusanganisira kurwara kwepamusoro, kuneta, hyperventilation, etc. Zvisinei, vanhu vakashandura zvishoma nezvishoma kuhupenyu pakakwirira, nepamusoro-soro yekusingaperi inosvika mamita 5,370.
Ropa oxygen saturation chiratidzo chakakosha chemuviri wemunhu hypoxia. Iyo yakajairika kukosha ndeye 95% -100%. Kana iri pasi pe90%, zvinoreva kusakwana kweokisijeni. Kana yakaderera pane 80%, inokonzeresa kukuvadza kwakanyanya kumuviri. Pakukwira kumusoro kwe3,000 metres, kuderera kweokisijeni yeropa kunogona kutungamirira kune zvakatevedzana zviratidzo, zvakadai sekuneta, dzungu, uye kukanganisa mukutonga.
Pahurwere hwepamusoro, vanhu vanogona kutora matanho akasiyana-siyana, sekuwedzera kufema, kurova kwemoyo uye kubuda kwemoyo, uye zvishoma nezvishoma kuwedzera kugadzirwa kwemasero matsvuku eropa uye hemoglobin. Zvisinei, zvigadziriso izvi hazvibvumiri vanhu kuita zvakajairika pakakwirira.
Munzvimbo yakati sandara, zvinonyanya kukosha kushandisa michina yekuongorora okisijeni yeropa senge narigmed chigunwe clip oximeter. Inogona kutarisa kuzara kweokisijeni yeropa munguva chaiyo. Kana okisijeni yeropa yakaderera kupfuura 90%, matanho anofanirwa kutorwa nekukurumidza. Ichi chigadzirwa chidiki uye chinotakurika, nekurapa-giredhi yekutarisa yechokwadi. Icho chishandiso chakakosha chekufamba kweplateau kana basa renguva refu.
Nguva yekutumira: Chivabvu-07-2024
