Cov txheej txheem:
- Puas antegrade ntws ib txwm nyob rau hauv cov hlab ntsha vertebral?
- Yam vertebral artery flow yog dab tsi?
- Cov hlab ntsha vertebral ntws mus rau dab tsi?
- retrograde ntws hauv vertebral artery txhais li cas?
Video: Puas yog antegrade ntws hauv cov hlab ntsha vertebral?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Flow nyob rau hauv sab laug vertebral hlab ntsha (cov xub luv) txawv ntawm ante-grade thiab retrograde. Flow ib txwm antegrade nyob rau hauv txoj cai vertebral artery (ntev xub). B, Sonogram ntawm 60-xyoo-laus tus txiv neej nrog lub plawv dhia thiab ntshav siab nyob rau hauv sab laug caj npab qhia tau hais tias sab laug vertebral hlab ntsha ntws mus rau bidirectional.
Puas antegrade ntws ib txwm nyob rau hauv cov hlab ntsha vertebral?
Postoperatively ib tug tshiab Directional Doppler ultrasound kuaj ces pom bilateral li qub (=antegrade) vertebral artery ntshav ntws. Cov txheej txheem siv uas tsis yog-invasive tau pom tias muaj kev ntseeg siab thiab yuav raug siv los tshuaj xyuas cov neeg mob uas xav tias muaj subclavian nyiag ua ntej angiographically thiab preoperatively.
Yam vertebral artery flow yog dab tsi?
Qhov ib txwm muaj rau cov hlab ntsha vertebral ntws ntim tau txhais los ntawm 5 mus rau 95 feem pua yog ntawm 102.4 thiab 301.0 mL / min. Qhov ntau yam no yog vim muaj qhov sib txawv ntawm tus kheej ntawm qhov tsis sib xws.
Cov hlab ntsha vertebral ntws mus rau dab tsi?
Cov hlab ntsha vertebral khiav los ntawm kab txha caj qaum hauv caj dab kom muab cov ntshav mus rau lub hlwb thiab qaum. Cov hlab ntsha vertebral yog ib feem ntawm cov hlab ntsha. Lawv nqa ntshav mus rau lub hlwb thiab qaum qaum, uas yog ib feem ntawm lub paj hlwb.
retrograde ntws hauv vertebral artery txhais li cas?
Lub sij hawm subclavian nyiag piav qhia txog cov ntshav ntws rov qab rau hauv cov hlab ntsha vertebral cuam tshuam nrog proximal ipsilateral subclavian artery stenosis lossis occlusion, feem ntau nyob rau hauv qhov chaw ntawm subclavian artery occlusion lossis stenosis ze rau keeb kwm ntawm vertebral artery.
Pom zoo:
Nyob hauv cov hlab ntsha hauv fetus nyob qhov twg cov pa oxygen?
Tsib tsib caug tsib feem pua ntawm cov fetal cardiac tso tawm mus los ntawm cov hlab ntsha umbilical umbilical artery umbilical hlab ntsha yog qhov kawg ntawm cov hlab ntsha sab hauv iliac (anterior faib ntawm). Cov no muab cov ceg qab qab nrog cov ntshav thiab cov as-ham hauv fetus.
Puas yog cov hlab ntsha puas yog ib feem ntawm kev ua pa?
Lub tshuab ua pa thiab ua pa ua haujlwm ua ke kom xa cov ntshav thiab oxygen thoob plaws hauv lub cev. Cua txav mus rau hauv thiab tawm ntawm lub ntsws los ntawm lub trachea, bronchi, thiab bronchioles. Cov ntshav txav mus rau hauv thiab tawm ntawm lub ntsws los ntawm pulmonary arteriesthiab cov hlab ntsha uas txuas rau lub plawv .
Leej twg kos cov roj ntsha hauv cov hlab ntsha?
Yuav Ua Li Cas Kos ABG. Cov Ntshav Ntshav Ntshav yuav tsum tus kws saib xyuas neeg mob txhawm rau sau cov qauv me me ntawm cov ntshav - feem ntau, tag nrho 1 ml³ nyiam dua. Cov ntshav tuaj yeem kos los ntawm cov hlab ntsha ntawm lub dab teg, puab tais, lossis saum lub luj tshib.
Cov hlab me me tshaj plaws nyob rau hauv cov hlab ntsha hu ua qhov twg?
Cov hlab ntsha me tshaj plaws, hu ua capillaries, me me heev koj xav tau lub tshuab ntsuas kom pom lawv. Capillaries koom ua cov hlab ntsha loj. Qhov loj dua yog hu ua cov leeg. Cov hlab no nqa ntshav rov qab mus rau lub plawv . Cov hlab ntsha me tshaj plaws lossis cov hlab ntsha hauv cov hlab ntsha yog dab tsi?
Puas yog cov hlab ntsha hauv lub hlwb puas yog myelinated?
Txhua lub paj hlwb, tshwj tsis yog optic thiab olfactorycov hlab ntsha, uas suav tias yog qhov ncaj qha nthuav dav ntawm lub hauv nruab nrab paj hlwb, muaj thaj chaw hloov pauv ntawm nruab nrab myelin (los ntawm oligodendrocytes) thiab peripheral myelin (tsim los ntawm Schwann hlwb) .
