Arteriovenous malformations (AVMs) yog cov kab mob txawv txav ntawm cov hlab ntsha uas tshwm sim hauv lub hlwb lossis txha nraub qaum uas cuam tshuam cov ntshav thiab cov pa oxygen uas ua rau lub hlwb puas tsuaj loj lossis tuag taus. Txoj kev kho ib txwm muaj yog cerebral resection thiab radiosurgery. Txawm li cas los xij, nrog kev nce qib hauv kev kho mob thev naus laus zis, kua embolic systems tau tshwm sim los ua qhov kev xaiv kho mob endovascular tsawg tsawg nrog cov txiaj ntsig tau zoo.
Cov kua dej embolic yog tsim los ntawm cov khoom siv ua kua uas tuaj yeem ua kom khov tom qab nws txhaj rau hauv cov hlab ntsha. Cov khoom no yog hu ua tus neeg sawv cev embolic. Thaum txhaj tshuaj, tus neeg sawv cev embolic solidifies thiab occludes AVM, thaiv cov ntshav ntws los ntawm cov hlab ntsha txawv txav ntawm AVM. Yog li ntawd, nws tiv thaiv hemorrhage thiab tseem txhawb nqa shrinkage thiab degeneration ntawm AVM lub sij hawm.
Lub ntsiab kom zoo dua ntawm cov kua embolic systems yog lawv cov cim minimally invasive, uas txo cov kev pheej hmoo thiab cov kev mob tshwm sim cuam tshuam nrog cov kev kho mob ib txwm muaj. Tsis tas li ntawd, cov tshuab ua kua embolic tso cai rau kev nkag ncaj qha mus rau qhov chaw ntawm AVM, muab lub sijhawm los xaiv cov AVMs me me thiab intricately nyob.
Muaj ntau ntau hom tshuaj embolic siv hauv cov kua embolic rau AVM kev kho mob. Feem ntau ntawm cov embolic agents yog polymer-based, nrog Onyx yog feem ntau siv. LAVA yog tsim los ntawm ethylene-vinyl cawv copolymer thiab dimethyl sulfoxide. Nws tau raug pom tias muaj txiaj ntsig zoo hauv kev kho mob ntawm AVMs, tshwj xeeb tshaj yog thaum ua ke nrog cov txheej txheem neuroimaging siab heev uas tso cai rau kev taw qhia meej rau qhov chaw ntawm AVM. Lwm tus neeg sawv cev embolic, n-butyl cyanoacrylate, kuj yog siv rau kev kho mob ntawm AVMs.
Cov txheej txheem ntawm cov kua embolization pib nrog MRI thiab angiography los qhia cov ntsiab lus ntawm AVM thiab nws cov hlab ntsha noj. Tom qab ntawd, tus kws kho mob endovascular ntxig rau microcatheter ntawm cov hlab ntsha hauv puab tais lossis dab teg kom txog thaum nws mus txog AVM. Lub microcatheter xa cov embolic tus neeg sawv cev rau AVM thiab occludes ntshav ntws mus rau AVM, ua rau tsim cov embolus uas mus tas li occludes AVM.
Zuag qhia tag nrho, kua embolic systems rau AVM kev kho mob tau pom tias yog ib qho kev cog lus rau kev kho AVMs, nrog tsawg invasiveness, tsawg dua kev phiv, thiab txhim kho cov txiaj ntsig. Nws yog ib qho tseem ceeb kom nco ntsoov tias txhua qhov xwm txheej yog qhov tshwj xeeb, thiab nws yog ib qho tsim nyog los xaiv qhov kev kho mob zoo tshaj plaws raws li tus neeg mob qhov xwm txheej thiab keeb kwm kho mob.