Txoj kev pheej hmoo ntawm lub tsos ntawm trisomy 21 khub ntawm chromosomes nyob rau hauv lub fetus yog nyob rau hauv tag nrho cov poj niam. Nws tau raug tshaj 1 cov ntaub ntawv rau 800 kev pabcuam. Nws nce siab dua yog tias tus niam txiv uas tsis tau muaj hnub nyoog qis dua 18 xyoo, lossis ntau dua 35 xyoo, thiab yog tias tsev neeg muaj tus menyuam ntawm kev yug menyuam ntawm kev sib txawv ntawm cov noob.
Txhawm rau txhom tau qhov no, nws pom zoo kom coj kev kuaj ua ke nrog kev kuaj ntshav thiab ultrasound. Qhov tshwm sim yog qhov kev txiav txim siab ntawm qhov tshwm sim ntawm trisomy 21 nyob rau hauv tus me nyuam tseem nyob hauv plab. Tab sis nws tsis yog ib txwm ua tau kom to taub cov lus qhia los ntawm txoj kev kuaj mob, vim qhov no nws yuav tsum mus cuag kws kho mob, uas feem ntau tsis tuaj yeem ua tam sim ntawd.
Txhawm rau kom tsis txhob tsim txom koj tus kheej nrog kev xav thiab kev xav, los ntawm tsab xov xwm no koj yuav kawm txog qhov kev yooj yim thiab ib tug neeg muaj feem ntawm trisomy 21 txhais tau tias thiab yuav ua li cas thiaj txhais tau lawv lub ntsiab.
Kev phom sij ntawm kev mob plab (trisomy) 21
Nyob rau hauv txoj kev pheej hmoo hauv Down's syndrome, qhov kev faib ua feem ntawm cov niam txiv uas muaj kev tsis sib haum nrog tib yam tau ntsib ib qho ntawm qhov kev hloov no. Yog li, qhov qhia tau tias yog 1: 2345, nws txhais tau hais tias qhov mob no tshwm sim ntawm 1 tug poj niam ntawm 2345. Qhov ntsuas no nce siab, nyob ntawm hnub nyoog: 20-24 - tshaj 1: 1500, txij li 24 txog 30 xyoo - txog li 1 : 1000, ntawm 35 txog 40 - 1: 214, thiab tom qab 45 - 1:19.
Qhov ntsuas no yog muab los ntawm cov kws tshawb fawb rau txhua lub hnub nyoog, nws tau xaiv los ntawm qhov kev zov me nyuam raws li cov ntaub ntawv ntawm koj hnub nyoog thiab lub caij nyoog uas cev xeeb tub.
Tus kheej kev pheej hmoo ntawm trisomy 21
Kom tau qhov ntsuas no, ultrasound cov ntaub ntawv thaum lub sij hawm 11-13 lub lim piam ntawm cev xeeb tub (tshwj xeeb yog qhov loj ntawm qhov chaw zov me nyuam nyob rau hauv ib tug me nyuam tseem ceeb), kev ntsuam xyuas ntawm cov ntshav thiab cov ntaub ntawv ntawm ib tug poj niam (muaj cov kab mob ntev, phem coj, haiv neeg, qhov hnyav thiab pes tsawg tus fetuses).
Yog trisomy 21 yog siab tshaj qhov kev txiav tawm (qhov yuav phom sij), ces tus poj niam no muaj qhov siab
Yog tias lub sijhawm trisomy 21 yog qis dua qhov kev txiav tawm, tom qab ntawd, qhov teebmeem no yuav tsis tshua mob qis no. Yog xav paub ntxiv, nws pom zoo kom ua qhov kev ntsuam xyuas thib ob, uas tau ua nyob rau ntawm 16-18 lub lim piam.
Txawm tias koj tau txais qhov phem, koj yuav tsum tsis txhob tso tseg. Nws zoo dua, yog lub sijhawm tso cai, rov ntsuas cov kev xeem thiab tsis poob plawv.