![Lub raum feem yog dab tsi? Lub raum feem yog dab tsi?](https://i.answers-medical.com/preview/medical-health/14051191-what-is-the-renal-fraction-j.webp)
Video: Lub raum feem yog dab tsi?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Hauv lub raum physiology, kev pom feem yog qhov piv ntawm glomerular filtration rate (GFR) rau qhov lub raum ntshav ntws (RPF). Pom Ib feem , FF = GFR/RPF, los yog. Cov lim feem yog li ntawd, sawv cev rau qhov feem ntawm cov kua uas ncav cuag ob lub raum uas kis mus rau hauv lub raum cev.
Kuj tseem paub yog, koj ua li cas xam cov raum feem?
Pom feem (FF) yog feem ntawm lub raum Plasma Flow (RPF) lim hla lub glomerulus. Cov kev sib npaug yog GFR faib los ntawm RPF. FF yog kwv yees li 20% uas qhia tias tshuav 80% txuas ntxiv nws txoj hauv kev los ntawm lub raum kev ncig.
Ib yam nkaus, lub ntsiab lus ntawm lub raum tsis zoo yog dab tsi? Lub raum perfusion . Lub raum perfusion hais txog cov ntshav ntws uas dhau los ntawm ib pawg loj ntawm lub raum cov ntaub so ntswg (mL / min / g) txhawm rau txhawm rau vascularize nws thiab pauv nrog qhov chaw extravascular. Qhov degree ntawm perfusion nyob ntawm ob qho tib si ntawm cov hlab ntsha thiab cov hauv paus hauv cheeb tsam, xws li cov ntshav hauv cheeb tsam thiab vasoreactivity.
Ib yam nkaus, cov ntshav hauv lub cev ib txwm ntws yog dab tsi?
Ntshav ntshav ntws (RBF) yog li 1 L / min. Qhov no suav nrog 20% ntawm lub plawv nres los ntawm cov ntaub so ntswg uas tsim tsawg dua 0.5% ntawm lub cev hnyav! Xav tias qhov ntim ntawm txhua raum tsawg dua 150 ml, qhov no txhais tau tias txhua tus raum yog perfused nrog ntau dua 3 zaug nws tag nrho ntim txhua feeb.
Lub raum ua haujlwm li cas?
Yog tias ob lossis ntau qib siab dua, koj yuav muaj kab mob raum . Cov li qub ntshav creatinine ntau yog 0.6–1.1 mg/dL rau cov poj niam thiab 0.7–1.3 mg/dL rau cov txiv neej. Qhov kev ntsuas no sib piv creatinine hauv koj cov ntshav thiab cov zis. Li qub creatinine tshem tawm yog 88-128 mL / min rau cov poj niam noj qab haus huv thiab 97-137 mL / min rau cov txiv neej noj qab haus huv.
Pom zoo:
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Muaj nuj nqi. Koj muaj ob lub raum hlab ntshav, ib qho tso rau txhua lub raum. Hauv tib neeg lub cev, ob lub raum tau txav mus rau sab nraub qaum. Thaum cov ntshav tau siv hauv cov menyuam yaus thiab cov pa oxygen tsis txaus, nws tawm ntawm lub raum, uas ntws los ntawm hilum, ib sab ntawm lub raum
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