An yi nazarin gwagwarmayar mata masu juna biyu domin su gane duk wani bambanci daga al'ada a cikin ci gaban tayin kuma daukar matakai na lokaci. Ya kamata a gudanar da nazari na duban dan tayi a sauƙaƙe sau uku a cikin wani lokacin da aka ƙayyade. An fara nazari na duban dan tayi na makonni 11 da 1 zuwa 14 makonni. A cikin wannan layi, duba ko akwai alamun mummunan cututtukan kwayoyin (alamun Down syndrome, ƙananan lalacewa na kwakwalwa da kashin baya, kasancewar kafaffu), abubuwan da ke faruwa a lokacin ciki ciki (hematoma, abruption abdomination, barazanar rashin zubar da ciki).
Na biyu zazzage duban dan tayi a lokacin daukar ciki an yi shi a cikin tazarar makonni 18 da rana daya har zuwa karshen makonni 21, a wannan lokacin, an duba zuciya ta fetal saboda ciwon lahani, duk kasusuwa na kasusuwan kafafu, hannayensu da ƙafafun an duba, gaban ciki, mafitsara, tsarin kwakwalwa, girman nau'in cerebellum da ventricles na kwakwalwa, rubutu na ci gaba da ciki bisa ga kirtani, ya nuna karkatacciyar da ba'a gani ba a farkon nunawa).
Idan an yi la'akari da rashin daidaituwa da yanayin tayi a cikin farko ko na biyu, sai a iya ba da shawara ga mace don kare daukar ciki ga dalilai na kiwon lafiya (bayan wannan lokacin, ba za a iya katse ciki ba). Idan akwai cin zarafin ci gaban tayin ko ya karu daga ka'ida, bisa ga alamun, alamar kulawa da kulawa da mai haƙuri a cikin lokuta masu zuwa na yin ciki.
Anyi amfani da duban dan tayi na uku a cikin kalma 31-33, a wannan lokaci, gabatarwar tayi, balaga na ciki, yanayin yanayin mahaifa, gano dukkan matsalolin da zasu iya faruwa a lokacin haihuwa da kuma rubuta magani mai dacewa bisa ga alamun.
Duban dan tayi a sati 20
Ko da yake an yi nazari na biyu a cikin makonni 18 zuwa 18, amma yawanci mace mai ciki tana aikawa zuwa duban dan tayi a cikin makonni 20 na ciki. Yawancin lokaci, sigogi na gudana a cikin makonni 1-2, amma ga mafi yawan alamomi masu auna na ƙayyade lokaci na ciki ta hanyar duban dan tayi. Alamomin mahimmanci don ƙayyade lokacin:
- Girman kwakwalwan kwanyar kwanyar (BPR) - tsakanin ƙasusuwan kasusuwan kwanyar - ƙananan dama da hagu na ciki da kuma madaidaiciya;
- tsawon femur;
- nufin diamita daga kirji (SDHC); nufin ƙananan ƙananan diamita (SJ);
- Ƙasar cranial occipital (LZR);
- kauri daga cikin mahaifa da wasu sigogi.
- Duban dan tayi a cikin makon 18-19 na ciki yana da wadannan ka'idoji: BPR 41.8-44.8 mm, LZR 51-55 mm, tsawon mata 23,1-27,9 mm, SDH 37,5-40,2 mm, SJ 43 , 2-45,6 mm, kauri daga cikin mahaifa 26,2-25,1 mm, yawan ruwan amniotic 30-70 mm (har zuwa karshen ciki).
- Duban dan tayi a cikin makonni 19-20 na ciki : BPR 44.8-48.4 mm, LZR 55-60 mm, tsawon mita 27.9-33.1 mm, SDHC 40.2-43.2 mm, SDJ 45.6- 49,3 mm, kauri daga cikin mahaifa 25,1-25,6 mm.
- Duban dan tayi a cikin makon 20-21 na ciki - al'ada sigogi: BPR 48,4-56,1 mm, LZR 60-64 mm, tsawon femur 33,1-35,3 mm, SDHC 43,2-46,4 mm, SJ 49 , 3-52.5 mm, kauri daga cikin mahaifa 25.6-25.8 mm.
Bugu da kari, a kan tayi a cikin makonni 20, rabon zuciya na tayin (zuciya) daga 130 zuwa 160 ƙuruci da minti, rhythmic. Girman zuciya a kan duban dan tayi a cikin makonni 20 na ciki shine 18-20 mm, yayin da ya wajaba a duba dukkanin ɗakin ɗakunan 4 na zuciya, daidai da manyan tasoshin, gaban kwakwalwa na zuciya, rashin rashin lahani a cikin kwakwalwa bakwai da sauransu.
Domin jarrabawar zuciya cewa ana duban duban dan tayi a cikin makonni 20: a gaban cin hanci maras kyau, ana bada shawara don dakatar da ciki a kan asibiti. Kuma idan ana iya amfani da mugunta a cikin kwanakin farko na rayuwar yaron da kuma tabbatar da yiwuwar yin amfani da ita, za a tura mace mai ciki a gaba zuwa cibiyar kiwon lafiya na musamman don bayardawa da kuma tallafi na gaba a cikin zuciyar yaro.