Lesi sifo se-Fetal Genetic sithwala ingozi encane yokuthatha isisu
Isampuli ye-Chorionic villus (i-CVS) isilingo sokubeletha esihlolisisa ukukhathazeka okukhulu kwe-chromosome kumntwana osathuthuka. Ukuhlolwa kuhilela ukuthatha isampula ku-chorionic villi, ingxenye ye-placenta, nokuhlaziya izakhi zofuzo. Ucwaningo lwamanje lubonisa ukuthi i-CVS ayinayo ingozi ephezulu yokukhulelwa kwesisu ngaphandle kwe-amniocentesis.
I-CVS ne-Amniocentesis
Izibalo ezindala zibonise ukuthi ukuhlolwa kwe-CVS kwenzeke ingozi ephezulu yokuphuphuma kwesisu ngaphandle kwe- amniocentesis , kodwa ucwaningo manje lubonisa ukuthi ubungozi bufana nalokho (cishe ku-1 ku-400).
Inzuzo eyinhloko ye-CVS: Ingenziwa ngaphambi kokukhulelwa, emavikini angama-10 ukuya kwangu-12.
I-downside eyinhloko ye-CVS: Kungcono kunamniocentesis ukukhombisa imiphumela engavumelani futhi, ngokungafani ne-amniocentesis, ayikwazi ukunikeza ulwazi ngamaphutha we-neural tube.
Ngubani okufanele athole i-CVS Test Prerenatal?
I-CVS ivame ukuhlinzekwa kumama ukuthi abe nomngcipheko ophakeme kunayo yonke yokuba nengane ethintekile ngengculaza enkulu.
Laba besifazane bahlanganisa abathwali abathintekayo ngezimo ezinjengeTay-Sachs Izifo noma izinkinga ezinkulu zemetaboli.
Umgomo ukukwazi ukutshela abesifazane ngokushesha ngangokunokwenzeka ukuthi ngabe izingane zabo zizozuza i-disorder noma cha.
Ngoba ukuhlola ukuhlola njengokufana kwe- alphafetoprotein imiphumela noma ukuhlolwa kwesikrini kathathu / i-quad ngokuvamile kwenziwa ngemuva kokukhulelwa, abesifazane abaningi abakhulelwe abaphathelene nemiphumela kulezi zivivinyo bazonikezwa i-amniocentesis esikhundleni se-CVS.
Okushiwo yi-Chorionic Villus Sampling Ukutshela
Isivivinyo se-CVS ngaphambi kokubeletha singathola ukuphazamiseka kwe-chromosome kanye nokungahleleki kwezakhi zofuzo emathisini e-placental.
I-CVS ibhekwa njengamaphesenti angama-99 anembile ekuhloleni izifo zofuzo.
Kunezimo eziningi ezingathí sina abazali abangase bakhathazeke ngazo uma becabanga nge-CVS. Nakuba ukuhlolwa kwe-CVS kungathola i-Down syndrome, akukhona kuphela ukuhlolwa kwalesi simo sofuzo.
Ngokuphambene ne-amniocentesis, i-CVS ayikwazi ukuhlinzeka ngolwazi lwe-neural tube defects.
Yini Ongayilindela Esivivinyweni
Awudingi ukwenza noma yini ekhethekile ukulungiselela ukuhlolwa ezimweni eziningi. Ukuhlolwa kungaba buhlungu kepha kuvame ukuphelelwa emaminithini ambalwa. I-CVS ingenziwa:
I-transabdominal: Inaliti ende ifakwe ngaphakathi kwesisu, efana ne-amniocentesis.
OK
I-Transcervical: Lokhu kufana nokuba ne-pap smear.
Uma Ucabanga Ukuhlolwa kwe-CVS
Uma udokotela wakho ekhuthaze ukuthi une-CVS test, ungesabi ukubuza imibuzo eminingi uma unayo. Izinto ezimbalwa okufanele uzikhumbule:
- Ucwaningo olusha luveza ukuthi ingozi yangempela yokukhulelwa kwesisu emva kwe-CVS noma i-amniocentesis isezansi kakhulu kunezilinganiso ezidala. Odokotela abenza le nqubo njalo kungenzeka ukuthi babe namazinga aphansi okukhulelwa kwesisu.
- Kungokwemvelo ukukhathazeka ngokuhlolwa okwenziwa ngaphambi kokubeletha okungase kwenzeke ingozi yokukhulelwa kwesisu, futhi kuhle ukunciphisa lezi zivivinyo uma ungakhululekile kulowo mngcipheko.
- Abazali abaningi abajabuli ngezingozi ze-CVS noma bangase babe nesimo sokuthi ngeke baqede ukukhulelwa kungakhathaliseki imiphumela. Kubo, ukuhlolwa akufanelekile ukuphishekela. Lezi zimbono zisebenza ngokugcwele, ikakhulukazi kusukela i-CVS ihlinzeka ngolwazi kuphela. Ngokuvamile, akukho ukwelashwa ngaphambi kokubeletha kwezifo ezixilongwa nge-CVS.
- Abanye abazali bakhetha ukulinda amasonto ambalwa futhi babe ne-amniocentesis uma ukuhlola kwabo kathathu / quad screen noma ukuhlola kwe-ultrasound kubonakala kubonisa izinkinga. Bangase bakhethe ukwenza lokhu ngoba, ngokungafani ne-CVS, i-amniocentesis ingakwazi ukuhlola amaphutha we- neural tube .
- Abazali okufanele baqaphele kakhulu i-CVS yilabo abanengozi enkulu yokukhulelwa umntwana onesifo esibucayi nesifiso sokuqinisekisa noma ukukhipha ukuxilongwa ngokushesha ngangokunokwenzeka.
Imithombo:
Isampula se-Chorionic Villus: i-CVS. I-American Association Ukukhulelwa. Kufinyelelwe: Mar. 12, 2009.
I-Chorionic Villus Sampling (i-CVS). March we-Dimes. Isikhombo Esisheshayo: AmaSpredishithi Eqiniso. Kufinyelelwe: Mar. 12, 2009.