Iqanda elichumayo lenza indlela enzima yokungena kwisibeletho-indawo apho iya kukhula kuyo yonke inqanaba lokukhulelwa. Kwisisu, iqanda lingena kwisigaba se-blastocyst. I-Blastocyst ibhola egcwele amanzi. Uluhlu lwangaphandle lwe-blastocyst luya kukhula lube yindawo ye-placenta, kwaye iiseli zangaphakathi ziba ngumbungu. Ngoku kufuneka aqalise inkqubo yokumisela, oku kuthetha ukunamathiswa kwesibindi kumbindi. Emva kokuba kugqityiwe ukuzaliswa kokuthi ukukhulelwa kuthathwa ukuba kufike.
Imimiselo ye-embryo implantation
Ngesinye isibeleko, umbungu usekuhlaleni okukhululekayo iintsuku eziliqela, kwaye inkqubo yokumisela iqala ngokukhawuleza. I-window ebizwa ngokuba yindawo yokufakelwa ivela emva kweentsuku ezingama-6-8 emva kokuvuthwa. Ukufakelwa kombungu kwindonga yesibindi kuqhutyelwa ngomhla we-5-10 emva kokuqumba. Umbungu kufuneka udibanise ngokupheleleyo nomzimba womama. Ngokomyinge, imbungu idinga malunga neentsuku ezili-13 ukugxininiswa ngokuqinile kwisibeleko. Ngexesha apho umbungu uqhotyoshelwe kwisibeleko, umfazi unokuba negalelo elincinci legazi. Oku kungenxa yokufakela kwi-embryyo kwisibeleko. Ngethuba lexesha elipheleleyo kukho ukuphakama okuphezulu.
Ukuze uphumelele umthambo emzimbeni, abafazi kufuneka bahambisane nefestile yokufakelwa, ukulungelelwa kwesibeleko ukuba samkele umbungu, kunye nokuba khona kwe-ovum efikelele kwisigaba se-blastocyst. Emva kokuba i-blastocyst iqhotyoshelweyo, ukubunjwa kwebriyo ngqo kuxhomekeke kumzimba kamama. Ngoku banalo ubuhlobo obusondeleyo kunye nomnye.
Kutheni kungekho mveliso yokubumba?
Njengoko kuyaziwa, malunga ne-40% ye-blastocyst eyangena ngempumelelo kwisibeleko ayifakwanga. Esinye sezizathu zokuthi i-embryo iyanqatshelwa kukuphulwa kwi-endometrium-okubizwa ngokuba yi-membrane ye-uterine. Le membrane ayinako ukondla ngokwaneleyo ukuba i-blastocyst. Okanye kunakho ukuphambuka. Ngokuqhelekileyo, ukukhupha isisu kubangelwa yinto engafanelekanga kwi-endometrium. Ngenxa yesiphumo esinjalo, i-miscarriages ivela. Kule meko, amaninzi amabhinqa akwazi ukuqaphela ngento yokukhulelwa, kuba iqanda elikhulayo lihamba ngeenyanga ezizayo.
Ukwahlulelwa kweembrusi
Ukwahlula kweembrusi ezisetyenzisiwe kwiiklinikhi ezibandakanya ukukhulelwa kwe-IVF. Ikliniki nganye ineklasi yayo. Nangona kunjalo, ezi ziqhelekileyo zezi ziko lenkcazo ye-alphanumeric.
Ukwahlula ngokubanzi luvavanya umgangatho nokubonakala kwimbungu. Uphawu oluphambili ekuhlelweni kwemibungu kwiintsuku ze-2 neye-3 zentuthuko liyinani leeseli, kunye nomgangatho wazo.
I-embryo efanelekileyo ifanele ibe nenombolo elandelayo yeeseli:
- iintsuku ezingama-2 - ukusuka kwii-2 ukuya kwi-6 amaseli;
- iintsuku ezi-3 - ukusuka kwii-4 ukuya kwii-10 zeeseli;
- iintsuku ezingama-4 - ngaphezu kweeseli ezili-8.
Amanani ekuhlelweni abonisa ubungakanani blastocyst, kunye nesigaba sokwandiswa. Kukho izigaba ezi-1 ukuya kwezi-6. Kwezinye iiklinikhi, ndibonisa inani lamaseli ngamanani.
Inobumba yokuqala esetyenziswe kwisigaba sibonisa umgangatho wobunzima obungaphakathi lweseli, apho i-embrayo iyaqala khona. Iyakwamkelwa ukuhlukanisa ezi zigaba ezilandelayo - A, B, C, D, apho i-A iyona nto ifanelekileyo.
Ileta yesibini ibonisa umgangatho we-trophoblast - oku kuluhlu lwangaphandle lwe-blastocyst. Ngulo lo ungqimba
Ukusebenzisa ukuhlelwa kweembungu, amaziko okuchithwa kwamagqabantshintshi axhomekeke ngokuchanekileyo kwiseli enokukwazi ukuzibandakanya kwi-epithelium yesisu ngendlela engcono. Kuvela kuye ukuba imbryo enempilo kunye nepheleleyo iyakhula. Emva kokuba inkqubo yokumiswa igqityiwe, inkqubo ekhutheleyo yokukhula kombindi ngaphakathi komama iqala.