Kev kuaj DNA noninvasive yog kom tau cov khoom siv caj ces los ntawm kev nqus cov ntshav ntawm cov poj niam cev xeeb tub. Piv nrog rau amniocentesis, puncture villous thiab leeg txoj hlab ntshav leeg, qhov kev ntsuas no hu ua kev sim ua kom tsis zoo. Nws yuav tsum raug sau tseg tias kev kuaj tsis kis DNA tsis yog ib txoj kev yooj yim thiab thoob ntiaj teb, tab sis muaj qee qhov kev txwv, feem ntau yog rau trisomy 21, trisomy 18 thiab trisomy 13. Txawm li cas los xij, raws li cov ntaub ntawv tshawb fawb muaj feem xyuam, cov kab mob chromosome aneuploidy muaj txog 80-95 %% ntawm kev muaj menyuam tsis taus cov caj ces, tshwj xeeb trisomy 21 thiab trisomy 18, uas yog lub hom phiaj ntawm kev yug menyuam muaj kev tiv thaiv thiab tswj nyob hauv Suav teb. Yog li no, txawm hais tias kev kuaj DNA tsis muaj qhov tseeb tsuas yog tuaj yeem kuaj tau peb hom chromosomes, nws tseem yog tus sawv cev.
Lub chaw kho mob cov ntaub ntawv tau kawm tias kev kuaj DNA tsis yog qhov tseem tseem tsis tuaj yeem kuaj xyuas seb tus me nyuam hauv plab puas muaj teeb meem, vim nws tsuas yog ib txoj hauv kev kuaj mob ua ntej, tsis yog txoj kev kuaj mob ua ntej. Txawm hais tias qhov kev kuaj tsis muaj DNA tsis zoo, nws tsis txhais tau tias tus me nyuam hauv plab yuav tsum muaj teeb meem, tab sis qhov tshwm sim ntawm qhov teeb meem yog qhov siab, thiab kev kuaj mob ua ntej xws li amniocentesis thiab hlab ntshav hlab ntshav paug xav tau.
Kev kuaj DNA noninvasive yog qhov tsim nyog rau tib neeg
1. Cov poj niam cev xeeb tub uas muaj hnub nyoog tshaj li 35 xyoo tsis kam xaiv qhov kev kuaj mob ua ntej;
2. Cov poj niam cev xeeb tub uas muaj qhov muaj feem yuav mob siab npaum li cas nyob rau thawj lub hlis thiab thib ob ntawm cev xeeb tub, lossis ib qho ntsuas tus nqi pauv, tsis kam ua qhov kev kuaj mob ua ntej;
3. Cov poj niam cev xeeb tub uas muaj qhov NT loj lossis cov qauv tsis zoo ntawm lub cev tsis tuaj yeem xaiv qhov kev kuaj tsis taus;
4. Cov poj niam cev xeeb tub uas tsis tsim nyog rau kev kuaj mob ua ntej, xws li cov kab mob kis, tus kab mob placetia, placenta hypoplasia, oligohydramnios, tsis zoo Rh ntshav pab pawg, keeb kwm kev rho menyuam, hawv rho menyuam lossis cov menyuam muaj nqi, thiab lwm yam;
5. Yog hais tias amniocentesis cell kab lis kev cai tsis ua hauj lwm, cov poj niam cev xeeb tub tsis txaus siab tsis kam lees lossis tsis tuaj yeem ua rau qhov kev kuaj pom tus menyuam hauv plab dua;
6. Cov poj niam cev xeeb tub uas xav tshem tawm trisomy 21, trisomy 18 thiab trisomy 13 syndrome yeem xaiv los soj ntsuam kev kuaj mob ua tsis taus;
7. Rau cov poj niam cev xeeb tub uas muaj kev puas siab puas ntsws hauv kev paub txog kev xeeb tub xws li amniocentesis thiab hlab ntaws ntshav.
