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.
