Cov txheej txheem:
Video: Dab tsi cuam tshuam rau kev xa oxygen mus rau cov ntaub so ntswg?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov xwm txheej cuam tshuam rau kev xa oxygen
Raws li tuaj yeem pom los ntawm qhov sib npaug saum toj no, kev hloov pauv hauv lub plawv tso zis, arterial cov pa saturation, thiab hemoglobin concentration yuav cuam tshuam rau kev xa oxygen.
Tsuas yog li ntawd, qhov xwm txheej twg txo qis kev xa oxygen mus rau cov ntaub so ntswg?
Cov ntaub so ntswg hypoxia yog qhov tsis txaus cov pa ntawm cov ntaub so ntswg qib; nws tuaj yeem tshwm sim los ntawm kev thov nce ntxiv, txo cov khoom lossis kev siv xovtooj ntawm tes txawv txav.
Tsis tas li ntawd, kuv tuaj yeem ua kom kuv cov pa oxygen ntau ntxiv? Rau augment kev xa khoom , nce arterial oxygenation (nrog rau cov tshuab ua pa thiab qib siab ntawm kev tshoov siab cov pa ), qib hemoglobin mus rau yam tsawg kawg 10 g / dL (nrog rau kev hloov pauv ntawm cov qe ntshav liab), thiab lub plawv tso zis (nrog rau dej thiab kev txhawb nqa inotropic).
Tom qab, lo lus nug yog, dab tsi yog ob txoj kev uas oxygen thauj mus rau cov ntaub so ntswg?
Cov pa tau nqa tawm hauv cov ntshav hauv ob daim ntawv: (1) yaj hauv ntshav ntshav thiab RBC dej (kwv yees li 2% ntawm tag nrho) thiab (2) thim rov qab khi rau hemoglobin cov (kwv yees li 98% ntawm tag nrho). Hauv physiological PO2 (40 <NwsO2 <100 mm Hg), tsuas yog ib qho me me ntawm cov pa oxygen yog yaj hauv ntshav ntshav vim oxygen muaj xws li solubility tsawg.
Yuav ua li cas hemoglobin xa oxygen mus rau cov ntaub so ntswg hauv lub cev?
Hemoglobin : Cov protein hauv cov qe ntshav liab (a) uas nqa cov pa rau cell thiab carbon dioxide rau lub ntsws yog hemoglobin (b). Hemoglobin yog ua los ntawm plaub symmetrical subunits thiab plaub pawg heme. Hlau txuam nrog heme khi cov pa . Nws yog kov hauv hemoglobin cov uas muab ntshav nws cov xim liab.
Pom zoo:
Yam dab tsi cuam tshuam rau cov ntaub so ntswg perfusion?
Tissue Perfusion: Lub plawv dhia tawm ntawm lub plawv yog nyob ntawm lub plawv dhia thiab mob stroke. Qhov ntim ntawm cov hlab ntsha yuav cuam tshuam los ntawm kev thauj khoom ua ntej (ntim siab), tom qab thauj khoom (systolic tsis kam), thiab kev cog lus (quab yuam ntawm kev sib zog). Lub plawv dhia yog nyob ntawm kev sib koom siab thiab parasympathetic sib npaug
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