Abin da wannan - tayin TVP - kowane mahaifiyar nan gaba za ta gano a lokacin daukar ciki daga ranar goma sha ɗaya zuwa goma sha huɗu. Fetal TVP yana da mahimmanci game da matsakaici. Ta yin amfani da duban dan tayi, raguwa na yankin tsakanin fata da launin yatsa na wuyan tayin yana da ƙaddara. Haɓaka a cikin wannan yanki yana nuna ci gaban kwayoyin halitta. Ana nuna yawan al'umar TVP ta mako guda a cikin tebur a kasa.
Tare da tarin tarin tayi a cikin makonni 12 a kan duban dan tayi na ƙayyade ƙananan ƙwayoyin, wanda, tare da ci gaba na tayi, zai zama har zuwa mako goma. Tunda a cikin yara da cututtuka na chromosomal ossification na faruwa da sannu a hankali, rashin raunin ƙwayar hanci zai iya zama alamar wannan cuta.
| Yanayin ciki, makonni. | Haske na sararin samaniya, mm | ||
|---|---|---|---|
| 5th percentile | Kashi 50th | 95th percentile | |
| Makonni 10. 2 days - makonni 10. 6 days | 0.8 | 1.5 | 2.2 |
| 11ed. 2 days - makonni 11. 6 days | 0.8 | 1.6 | 2.2 |
| Makonni 12. 2 days - makonni 12. 6 days | 0.7 | 1.6 | 2.5 |
| Mako 13. 2 days - makonni 13. 6 days | 0.7 | 1.7 | 2.7 |
A kwanakin bayan mako sha huɗu, ya fi wuya a ƙayyade wannan cututtuka, saboda tsarin lymphatic zai fara aiki a cikin yaron kuma ya wuce ruwa.
Fadada TBE a cikin tayin
Ƙara TBE a cikin tayin ya nuna alamun cututtukan irin su Down syndrome . Don sanin wannan farfadowa, wannan bincike ne da aka gudanar. Don gano ƙwayar wasu ƙwayoyin cuta, yi cikakken bayani akan duban dan tayi.
Mata masu juna biyu da shekarun talatin da biyar suna da haɗari na samun ciwon yara tare da kwayoyin halitta. Saboda haka, likitoci kullum suna bada shawara cewa suna shan ganewar asali don tabbatar da cewa TTT na al'ada ne. Bisa ga bayanan ilimin lissafi, haɗarin ƙãra a TBC a cikin tayi a cikin masu juna biyu yana da shekaru talatin da biyar a 1: 1350, a cikin mata bayan shekaru talatin da biyar yana da 1: 1380, kuma a cikin mata fiye da arba'in, 1: 100.