Ukususela kwiiveki ezi-12 ukuya kuma-40 ziqala ixesha lokutshatyalaliswa kwentsana ezayo. Ngeli xesha, zonke iinkqubo zezitho azange zisebenze. Iveki yesi-13 yithuba leempembelelo zengingqi yomntwana. Ukukhathazeka, ukuphefumula, i-endocrine, iinkqubo zethambo le-fetus ziyaqhubeka zakha. Iimpawu zentsana yakho yesikhathi esizayo ziba zicacise ngakumbi. Iiveki le-13 yokukhulelwa lixesha lokuqala lokusabela kwengqondo yengane ezayo.
Ukuphuhliswa kwe-Fetal kwiiveki ezi-12-13
Ukuvavanya ukuphuhliswa nokuxilongwa kwe-patal pathology, i-fetometry ye-fetus iyenziwa kwiiveki ezili-12 okanye ezili-13.
Iiparameters ze-fetometry kunye nesimo esiqhelekileyo kumntwana wesisu kwisonto le-13 lokukhulelwa:
- ubungakanani bentsholongwane yebiparietal - 24 mm;
- ubude bethanga - 12 mm;
- isikhokelo somfuba - 24 mm.
Kwiiveki ezingama-13, umbungu unesisindo se-31 gram, ubude be-10 cm.
ITVP kwiiveki ezingama-13
Ubungakanani bekhola okanye i-TVP yiparameter ukuba oogqirha bawunake ngethuba lokuhlola i-ultrasound ngeliveki le-13 lokukhulelwa. Ubungakanani bendawo yekoloni yindawo yokuqokelela umkhuhlane kwindawo yangasemva yentamo yomntwana. Inkcazo yale parameter ibalulekile ukuxilongwa kwezinto ezingafaniyo zophuhliso lwezitho zomzimba, ngakumbi kwinkcazo ye-Down syndrome, i-Edwards, i-Patau.
I-TVP kwiiveki ezingama-13 yinto evamile
Ixabiso eliqhelekileyo lomzimba lobunzima bekhola lithuba 2.8 mm ngeveki 13. Inani elincinci lomlambo luphawu lwazo zonke iintsana. Ukunyuka kobunzima bekhola indawo engaphezu kwama-3 mm kubonisa ukuba khona kwe-Down's syndrome kwintsana ezayo. Ukuqinisekisa ukuxilongwa, kuyimfuneko ukuqhuba iimviwo ezingenayo ezongezelelekileyo, ezinokuyingozi kwintsana. Umngcipheko wokuphuhlisa le ntsholongwane ngexesha lokukhulelwa kokuqala emva kweminyaka engama-35 lonyuka kakhulu.
Khumbula ukuba ukuxilongwa kokunyuka kwendawo yekoliti akuthethi ukuba u-100% ubukho bemvelo , kodwa uvumela kuphela ukubeka iqela elijongene nobungozi phakathi kwabasetyhini abakhulelweyo.