Ngexesha lokugaya, umntwana osesibelethweni sikamama uvakalelwa imfuno eqhubekayo kunye nexesha eliqhubekayo lokubonelela rhoqo nge-oxygen kunye nezinto eziyimfuneko ekuphuhlisweni kwayo. Ukumnika konke okufunekayo kwaye ngokugcwele, uhlobo ludale iziganeko ezizodwa njenge-chorion kunye ne- placenta yokukhulelwa .
I-chorion yile membrane yangaphandle ye-embryonic membrane ejikeleze imbungu kwaye ibunjwa kwixesha lokuthoma lokuqala. Inomlinganiselo omkhulu weenqwelo ezithengeleleneyo ezangena ezindongeni zesisu.
Njengoko ixesha lokugaya landa, ubukhulu bezinto ezinjalo zikhula ngokukhawuleza, zikhupha zize ziguquke zibe yi-villi ye-chorion. Ezi zilandelayo zibonelela nge-metabolism epheleleyo phakathi komama kunye nomntwana. Ubunzima beqhekeza kwiiveki ezingama-13 lukhulu kangangokuba luguqulwa kancane libe yi-placenta. Lo mzimba wesikhashana oza kuba noxanduva lokusebenza komntwana ngexesha lokuthoba.
Ngexesha lokukhulelwa, ukunamathiswa okuchanekileyo kweqhekeza elinomdla kudlala indima ebaluleke kakhulu, enqunywe kwiseshoni yokuqala ye-ultrasound. Njengomthetho, kukho iintlobo ezintathu zesebe lendawo, oku:
- kwindonga yangemuva yesisu;
- phambili;
- okunamathiselwe okuphantsi.
Zonke aziqwalaselwe njengezonyango kwaye akufanele zibangele ukwesaba kumama ozayo.
Isakhiwo se-chorion, ebonakalayo kwi-monitor ye-apps, imele umgca omhlophe, okhankanywe ngamagada kwaye usekupheleni kweqanda le-fetal. Ukufunda okuchanekileyo kunika ithuba lokuqwalasela nakwi-villi encinci. Ubungakanani bendlela yokukhulelwa kwiimilinganiselo zokuqala zokukhulelwa lilinganiselwa kuma-millimitha kwaye, ngokomthetho, ngokulinganayo lilingana nexesha lokunyusa kwiiveki.
Yimiphi imisebenzi yekhefu ngexesha lokukhulelwa?
Eli thuba liqala umsebenzi walo kumazinga okuqala okuphuhliswa kwembungu kwaye iqulethe oku kulandelayo:
- ukubonelela nge-gas exchange between mother and child;
- ukukhuselwa kwe-fetus kwizifo kunye neentsholongwane;
- umsebenzi we-trophic and excretory.
Ngokuqhelekileyo, oomama abancinci, befumene iziphumo zophando ngefowuni ye-ultrasound, babhekana nenani elikhulu elingenakuqondakala kunye neloyiko elijongene nale nxalenye yesikhashana. Cinga ngokuqhelekileyo kubo:
- Ikhefu yonyaka - yile fomu eqhelekileyo, leyo igcina i-8 okanye iiveki ezi-9 zesisu. Emva kolu xesha, i-chorion iguqulwa ibe yindawo epholileyo kunye neyomeleleyo, eyimfuneko yokuguqulwa kwayo ngakumbi kwi-placenta kunye nokubonelelwa okupheleleyo komntwana nazo zonke izinto eziyimfuneko.
- I-cyst chorionic ngokuqhelekileyo ibangelwa ukuvuvukala ngexesha lokukhulelwa okanye ngaphambi kokuchumisa. Isayithi apho i-cyst ikhona khona ayinakunikezwa ngegazi kwaye ihlukaniswe kwi-placenta. Ngokuqhelekileyo iifom ezinjalo zizincinci kwaye zingatshatanga, kwaye azichaphazeli kakubi indlela yokukhulelwa.
- I-Hyperplasia ye-chorion yinkqubo yokwandisa inani lala ma capillari kunye nokwandiswa kwazo. Oku kuya kunika ithuba lokugcina ubomi bomntwana,
ukuba ukuhanjiswa kungenzi ngexesha. - Isakhiwo esiqingqiweyo seqhekeza okanye ukuphuhliswa kwayo ngokupheleleyo kunokukhokelela ekuphumuleni komzimba. Le nkqubo isabizwa ngokuthi i-hypoplasia. I-Vorsinki chorion ngokwenene isuka kude nodongeni lwesisu kunye neqanda le-fetal exfoliates.
- Ngokuqhelekileyo kukho ingxaki kunye nenkcazo yoko kukuthi: "i- vascular chorionic villus ". Kwinqanaba lokubunjwa kweli candelo, ukungasebenzi kakubi, kwaye imithambo yegazi ayikwazi ukubeka.
Isiphetho esihle kakhulu se-ultrasound kumama wesikhathi esizayo "isakhiwo esingatshintshi se-chorion", ukuba sikhutshwe phambi kweveki ezi-10-11. Ngaphandle koko, oku kusenokuthetha ukuba ukukhulelwa akuhlakuli kwimeko efunekayo.