Olu vavanyo lwe-Fetal Genetic luthwala umngcipheko omncinci wokutshatyalaliswa
Isampuli ye-chorionic villus (i-CVS) isilingo sokubeleka esiza kuhlola ukukhathazeka okukhulu kwe-chromosome kwintsana ekhulayo. Uvavanyo lubandakanya ukuthatha isampula kwi-chorionic villi, inxalenye ye-placenta, kunye nokuhlaziya i-genetic makeup. Uphando lwangoku lubonisa ukuba i-CVS ayinayo ingozi enkulu yokukhulelwa kwesisu ngaphandle kwe-amniocentesis.
CVS vs Amniocentesis
Amanani asebekhulile abonisa ukuba uvavanyo lweCVS lube nomngcipheko ophezulu wokukhulelwa kwesisu ngaphandle kwe- amniocentesis , kodwa uphando ngoku lubonisa ukuba umngcipheko ufana (malunga no-1 ngo-400).
Inzuzo ephezulu yeCVS: Inokwenziwa ngaphambi kokukhulelwa, kwiiveki ezili-10 ukuya kwezi-12.
Umgca we-CVS ongundoqo: Kukhulu kunokuba i-amniocentesis ibonise iziphumo ezingenakulinganiswa kwaye, ngokungafani ne-amniocentesis, ayikwazi ukunika ulwazi malunga neziphene ze-neural tube.
Ngubani o fanele afumane i-CVS Test Prerenatal?
I-CVS idla ngokunikezelwa kumama ukuba abe nomngcipheko ophezulu kunomdla wokuba nosana oluchaphazelekayo ngengxaki yemfuyo.
La mabhinqa aquka iziphathamandla eziyaziwayo ngeemeko ezinjengeTay-Sachs Izifo okanye izifo ezinzima zokuxilonga.
Injongo kukukwazi ukuxelela abafazi ngokukhawuleza ukuba ingaba iintsana zabo ziza kuba nefa le-disorder.
Ngenxa yokuba iimvavanyo zokuhlola ezifana neziphumo ze-alphafetoprotein okanye uvavanyo lwesithathu / quad yeskrini zidlalwa kamva xa ukhulelwe, abaninzi abafazi abakhulelweyo abaneziphumo malunga nale mvavanyo baya kunikwa i-amniocentesis kuneCVS.
Iziphumo zeSunriic Villus Sampling Zikuxelela
Uvavanyo lwe-CVS ngaphambi kokubeleka luyakwazi ukufumana ingxaki ye-chromosome kunye nokungaqhelekanga kwezinto eziphathekayo kwiisisitye.
I-CVS ithathwa malunga neepesenti ezingama-99 ezichanileyo zokuxilonga izifo zemizimba.
Kukho imeko ezininzi ezinzima abazali abanokukhathazeka ngazo xa bejonga iCVS. Nangona uvavanyo lwe-CVS luyakwazi ukubona i-Down syndrome, akuyiyo kuphela uvavanyo lo mqathango wofuzo.
Ngokuchasene ne-amniocentesis, i-CVS ayikwazi ukubonelela ngeengxaki ze-tube neural tube.
Yintoni enokuyilindela kwi-Test
Awudingi ukwenza nantoni na ukulungiselela ukuvavanya kwiimeko ezininzi. Uvavanyo luya kuba buhlungu kodwa luhlala luphezu kwemizuzu embalwa. I-CVS inokwenziwa:
I-Transabdominal: Inaliti ende ifakwe kwisisu, ifana ne-amniocentesis.
OKANYE
I-Transcervical: Oku kufana nokuba ne-pap smear.
Ukuba Uqwalasela i-CVS Test
Ukuba ugqirha wakho ukhuthaze ukuba uvavanyo lweCVS, ungesabi ukubuza imibuzo eninzi ukuba unayo. Izinto ezimbalwa zokugcina engqondweni:
- Uphando olutsha lubonisa ukuba umngcipheko wokutshatyalaliswa kwesisu emva kwe-CVS okanye i-amniocentesis incinci kakhulu kuneziqikelelo ezidala. Oogqirha abenza le nkqubo ngokuqhelekileyo banokuthi babe neqondo eliphantsi lokunciphisa isisu.
- Kuqhelekile ukuba unomdla wokuba uvavanyo lwezithuba zokubeletha oluza kuthatha umngcipheko, kwaye kulungile ukunciphisa le mvavanyo ukuba awukhululekile kulo mngcipheko.
- Abazali abaninzi abanakukhathazeka ngeengozi zeCVS okanye banokuba nesimo sokuba abayikuphelisa ukukhulelwa kungakhathaliseki ukuba iziphumo. Kubo, uvavanyo alufanelekanga ukusukela. Ezi ngcamango zisebenza ngokufanelekileyo, ingakumbi kuba i-CVS inika nje ulwazi. Ngokuqhelekileyo, akukho zonyango zokubeleka kwezifo ezifunyaniswe ngeCVS.
- Abanye abazali bakhetha ukulinda iiveki ezimbalwa ezongezelelweyo kwaye babe ne-amniocentesis ukuba uvavanyo lwabo lwesithathu / i-quad yeskrini okanye uvavanyo lwe-ultrasound lubonakala lubonisa iingxaki. Bangakhetha ukwenza oku ngenxa yokuba, ngokungafani neCVS, i-amniocentesis ingahlalutya iimpazamo ze-neural tube .
- Abazali abakufanele baqwalasele i-CVS yilabo abanomngcipheko omkhulu wokukhulelwa umntwana onesifo esinzulu kunye nomnqweno wokuqinisekisa okanye ukulawula ukuxilongwa kwangangoko kunokwenzeka.
Imithombo:
Isampula seCririic Villus: iCVS. Umama waseMelika wokukhulelwa. Kufumaneka: uMatshi 12, 2009.
Isampula seCririic Villus (iCVS). Matshi weDimes. I-Quick Reference: Iifayili ZeeNkcukacha. Kufumaneka: uMatshi 12, 2009.