Oxygen Saturation Tseem ceeb

Raws li peb txhua tus paub, oxygen saturation yog ib yam tseem ceeb ntawm kev ua kom lub cev muaj zog. Daim ntawv thov kev soj ntsuam ntawm cov pa taws ua rau sab hauv cov tshuaj, kev phais, kev pabcuam khomob, thiab lwm yam tseemceeb heev. Nws yog ib qho tseem ceeb thiab tseem ceeb rau txoj kev saib xyuas mob ntsws Saib xyuas. Tus kws sau ntawv feem ntau tau txais kev pab tswv yim thaum muaj xwm ceev hauv lwm lub tuam tsev, nug tus neeg mob seb qhov teeb meem tam sim no, yog vim li cas kev pabcuam thaum muaj xwm ceev? Cov lus teb feem ntau yog vim tsis muaj pa taws txaus, yog li kev sib tham ceev. Peb txhua tus paub tias tsis muaj pa taws thiab tsis ua pa tsis zoo, tab sis tsis tas siv cov pa hluav taws tsawg los ntawm cov kab mob ua pa, tsuas yog pom lub hauv paus ua rau cov pa ua pa, kom tsim nyog kho mob ua kom cov pa taws ua kom zoo dua.

Dab tsi yog oxygen saturation?

Oxygen saturation yog qhov degree uas hemoglobin (Hb) khi rau oxygen, piv txwv li qhov feem pua ​​ntawm oxygen thiab Hb rau tag nrho Hb, lossis qhov sib piv ntawm Hb ua txhua yam oxygen rau Hb cov kab mob.

Cov mis yog raws li nram no: SpO2 = HbO2 / (HbO2 + Hb) × 100%. Qee cov pa taws ntawm 95% -98%, cov pa pa taws thiab ib nrab ntawm cov pa uas muaj feem xyuam nrog.

Cov kev ua kom lub cev tsis paub tseeb

Kev ntsuas cov pa ntsuas yog feem ntau muab faib ua ob hom electrochemical thiab kho qhov muag.

Electrochemical txoj kev uas tib neeg lub cev los ua noj cov ntshav siab, kuaj roj ntshav thiab ntsuas cov pa ntsuas pa, uas yog ib qho kev ntsuas tus qauv, thiab tsis tuaj yeem saib xyuas tsis tu ncua.

Kev ntsuas kev kho yog ib txoj kev uas tsis siv yooj yim uas yog siv lub tshuab fais fab raws li lub hauv paus ntsiab lus uas ua rau cov ntshav plab ua rau lub plawv ua rau lub plawv pauv. Txoj kev siv feem ntau yog siv lub tshuab pulse. Ib sab ntawm kev ntsuas kev ntsuas yog ntsuas nrog ob lub LEDs, emitting liab thiab infrared lub teeb ntsig txog, thiab lwm yam yog txawm peem nrog ib tug photodetector uas hloov cov xim liab thiab cov duab liab ntes tau los ntawm tus ntiv tes tawm mus rau hluav taws xob teeb liab. Vim tias cov dej coefficients ntawm ob lub teeb no tas mus rau ntawm daim tawv nqaij, nqaij, roj, venous ntshav, pigment thiab pob txha, tsuas yog concentration HbO2 thiab Hb nyob rau hauv cov hlab ntsha cov ntshav hloov ua ntu zus nrog cov ntshav arterial, ua qhov teebmeem photoelectric Lub teeb liab siv ntawm qhov tso zis ntawm cov kev hloov pauv periodically. Tom qab cov kev hloov kho cyclically tau ua tiav lawm, ntsuas tau cov pa oxygen uas ntsuas tau thiab ntsuas tus mem tes yuav muab xam nrog thiab.