Ngaba yintoni le-fetus ye-TVP - wonke umama ozayo uza kufumanisa ngexesha lokukhulelwa ukusuka kwishumi elinanye ukuya kweyeshumi elinesine. I-TV ye-Fetal iyimilinganiselo yefayili ye-occipital. Ukusebenzisa i-ultrasound, ubukhulu bommandla phakathi kwesikhumba kunye nezicubu ezinotsholongwane zentamo yesisu zizimisele. Ukongezwa kweli candelo kubonisa ukuphuhliswa kweentsholongwane zofuzo. Isiqhelo se-TVP ye-fetal ngeveki siboniswe kwitheyibhile elingezantsi.
Kanye kunye ne-TB ye-fetal kwiiveki ezi-12 kwi-ultrasound zichonga ubukho bethambo lesisu, okuthi, kunye nophuhliso oluqhelekileyo lwesisu, kufuneka lufake kwi-iveki yeshumi. Ekubeni kubantwana abane-chromosomal pathologies ossification kwenzeka ngokukhawuleza, ukungabikho kwethambo le-nasal kungabonakalisa kwesi sifo.
| Ixesha lokukhulelwa, iiveki. | Ubunqamle beklasi, mm | ||
|---|---|---|---|
| 5 percentile | 50th percentile | 95 percentile | |
| Iiveki ezili-10. 2 iintsuku - iiveki ezili-10. 6 iintsuku | 0.8 | 1.5 | 2.2 |
| 11. 2 iintsuku - iiveki ezili-11. 6 iintsuku | 0.8 | 1.6 | 2.2 |
| Iiveki ezili-12. 2 iintsuku - 12 iiveki. 6 iintsuku | 0.7 | 1.6 | 2.5 |
| Iiveki ezi-13. 2 iintsuku - iiveki ezi-13. 6 iintsuku | 0.7 | 1.7 | 2.7 |
Ngemihla emva kweveki yeshumi elinesine, kunzima ukuyiqonda le nzala, kuba i-lymphatic system iqala ukusebenza kumntwana kunye nokuphuma kwamanzi.
Ukwandiswa kwe-TBE ebusweni
Ukwandisa i-TBE ebuswini kubonisa intsholongwane efana ne- Down syndrome . Ukufumanisa le nkalo yokugula, lo uphando luyenziwa. Ukufumanisa ubukho bezinye izifo ezingafaniyo, yenza uvavanyo olupheleleyo lwe-ultrasound.
Abafazi abakhulelweyo abaneminyaka engamashumi amathathu anesihlanu banomngcipheko ophezulu wokuba nomntwana onentsholongwane yemfuyo. Ngako oko, oogqirha bahlala becebisa ukuba bafumane ukuxilongwa kwangaphambi kokubeletha ukuze baqinisekise ukuba i-TVP yesisu iqhelekile. Ngokomlinganiselo wolwazi, umngcipheko wokwanda kwe-TBC ebusweni kwabasetyhini abakhulelweyo uneminyaka engamashumi amathathu anesihlanu ubudala ngo-1: 1350, kwabasetyhini emva kweminyaka emashumi mathathu anesihlanu ubudala ubudala ngu-1: 1380, kunye nabasetyhini abangaphezu kwe-40, 1: 100.