Chorion biopsy yog ib txoj kev tshawb fawb uas tso cai rau koj los txheeb xyuas cov kab mob hauv lub hauv paus thiab keeb kwm ntawm kev xeeb tub thaum ntxov. Nrog nws, cov qauv ntawm chorion raug coj mus, uas tom qab ntawd tsim cov placenta.
Nws tsim nyog sau cia tias tsis muaj kev hloov pauv nrog tus menyuam hauv plab nws tus kheej tau ua tiav, yog li chorion biopsy yog suav tias muaj kev nyab xeeb heev. Tom qab cov txheej txheem, qhov kev pheej hmoo ntawm kev rho menyuam tawm tsuas yog 2%. Txoj kev tshawb no muab cov txiaj ntsig raug, tab sis yog mob thiab tuaj yeem ua rau tsis xis nyob rau tus poj niam cev xeeb tub, yog li ntawd, nws tau ua nruj me ntsis raws li cov lus qhia. Nws siv sij hawm tsawg heev, thiab cov txiaj ntsig tau npaj tiav hauv 3-4 hnub.
Muaj 2 yam tseem ceeb ntawm qhov kev tswj hwm no:
• Vaginal chorionic villus sampling - ua li ntawm 8 mus rau 12 lub lis piam ntawm cev xeeb tub. Nyob rau hauv kev tswj hwm ultrasound, ib qho cuab yeej tshwj xeeb tau muab tso rau hauv lub tsev menyuam los ntawm qhov chaw mos, uas tau muab tso rau ntawm lub endometrium thiab chorion (nws yog lub hauv paus ntawm lub plab). Nrog rau qhov kev tswj hwm no, villi ntawm chorion raug txiav tawm lossis nqus. Nyob rau hauv lub neej yav tom ntej, lawv yuav raug mus rau kev soj ntsuam kuaj. Cov txheej txheem no yog kiag litsis mob.
• Abdominal chorionic villus biopsy - ua tiav ntawm 9 thiab 11 lub lis piam ntawm cev xeeb tub. Qee lub sij hawm qhov kev tswj hwm no tuaj yeem siv rau lub hlis thib ob thiab thib peb, vim nws tso cai rau koj kom tau txais txiaj ntsig sai, tshwj xeeb tshaj yog nyob rau hauv cov dej amniotic me ntsis, yog li amniopuncture tsis tuaj yeem ua tau. Rau manipulation, tus neeg mob pw ntawm nws nraub qaum. Tus kws kho mob, siv lub tshuab ultrasound, txiav txim siab txoj hauj lwm ntawm cov placenta, uterine phab ntsa, thiab tseem nrhiav pom qhov chaw nyab xeeb rau yav tom ntej. Txhawm rau nqa cov khoom tsim nyog, kev sib tsoo ntawm lub plab thiab cov phab ntsa hauv tsev menyuam yog ua nrog ib rab koob, thiab cov qauv ntawm cov hlwb raug coj mus rau lwm qhov rau kev tshawb fawb ntxiv. Nws yog ib qho tsim nyog sau cia tias qhov chaw puncture yuav tsum tau kho nrog tshuaj loog hauv zos nrog cov khoom ua kom zoo.
Chorion biopsy feem ntau yog sau rau cov poj niam cev xeeb tub uas muaj kev pheej hmoo ntawm kev xeeb tub nrog caj ces, txawm tias tus poj niam twg tuaj yeem kuaj qhov no thaum cev xeeb tub yog tias xav tau.
Cov kab mob dab tsi tuaj yeem kuaj tau siv cov txheej txheem kuaj mob no? Qhov no feem ntau yog Down's Syndrome, trisomy 13 thiab 18 chromosomes, Turner's syndrome, cystic fibrosis thiab mob qog noj ntshav, nrog rau Klinefelter's syndrome. Tsis tas li ntawd, ib qho chorionic biopsy tuaj yeem kuaj txog 100 ntau chromosomal thiab caj ces txawv txav.
Nws yog ib qho tsim nyog yuav tsum nco ntsoov qhov tseem ceeb ntawm qhov kev kuaj mob no - nws tuaj yeem siv tau sai dua li amniocentesis (tam sim no ntawm 10 lub lis piam gestation). Tsuas yogqhov no, cov txiaj ntsig tuaj yeem tau txais sai heev - feem ntau hauv thawj lub lim tiam tom qab kuaj.
Kuv yuav tsum hais tias chorionic biopsy kuj tuaj yeem nthuav tawm placental mosaicism, thaum qee lub hlwb muaj cov chromosome ib txwm teeb, thaum lwm tus tau tsim muaj qee yam tsis xws luag.
Tom qab kuaj xyuas, pom thiab mob hauv plab tuaj yeem tshwm sim. Amniotic kua kuj tuaj yeem tso tawm ntawm qhov chaw mos (hauv me me). Yog tias koj muaj cov tsos mob txawv txawv, koj yuav tsum hu rau tus kws kho mob uas tswj kev xeeb tub.
