Mubisanzwe, abantu bafite ubuzima bwiza 'SpO2 agaciro kari hagati ya 98% na 100%, kandi niba agaciro karenze 100%, bifatwa nkukwuzuza ogisijeni yamaraso ari mwinshi cyane. Kwuzura kwinshi kwa ogisijeni mu maraso bishobora gutera gusaza ingirabuzimafatizo, bikabaviramo ibimenyetso nko kuzunguruka , umutima wihuta, palpitat ...