Koj puas paub lub hauv paus ntsiab lus ntawm ntiv tes pulse oximetry?
Peb txhua tus paub tias hemoglobin txoj haujlwm yog nqa oxygen mus rau txhua qhov ntawm lub cev. Peb hu rau tus nqi ntawm cov pa oxygen hauv hemoglobin ntawm txhua lub sijhawm oxygen saturation. Qhov ntawd yog qhov ntsuas ntiv tes oximeter ntsuas. Hemoglobin muaj lub xeev nqa oxygen thiab, tau kawg, lub xeev khoob. Cov pa oxygen-carrying hemoglobin hu ua oxygenated hemoglobin thiab lub xeev khoob hu ua txo hemoglobin.
Oxygenated hemoglobin thiab txo hemoglobin muaj cov khoom sib txawv ntawm qhov pom thiab ze-infrared spectrum. Txo hemoglobin absorbs ntau lub teeb liab zaus thiab tsawg dua infrared zaus lub teeb; Oxygenated hemoglobin absorbs tsawg dua lub teeb liab thiab ntau lub teeb infrared. Qhov kev sib txawv no yog lub hauv paus tseem ceeb tshaj plaws rau cov ntiv tes oximetry.
Tom qab ib tug series ntawm kev xam, tus ntiv tes oximeter qhia cov ntaub ntawv oxygen saturation ntawm lub vijtsam zaub.
