Kwiiveki zokuqala zokukhulelwa, i-placenta encinane ibizwa ngokuba yi-chorion, ebaluleke kakhulu ekuphuhliseni ngokupheleleyo umntwana. Ngokuqhelekileyo, i-placenta iqhotyoshelwe kumgangatho wesibeleko okanye kwindonga yangasemva. Kodwa ngamanye amaxesha i-chorion ibimbela i-pharynx ngokupheleleyo okanye inxenye, ihlala phantsi kwicandelo eliphantsi. Kule meko, thetha malunga nokunikezwa kweqhosha .
Ingozi yenkcazo yenkozo
Ukunikezwa kwekhriyri kugqitywe ngeveki ye-12 ngexesha le-ultrasound yokuqala. Kunokwenzeka ukufumanisa i-pathology ngexesha elidlulileyo ukuba i-ultrasound iyenziwa ngesizathu esithile ukuya kwiiveki eziyi-12. Ngolu hlobo lokuxilongwa, umfazi unikwe ukuphumla kwebheddi, ngokuqhelekileyo kufuna ukuba izibhedlele zilawule ukukhulelwa. Kwinkqubo yokukhula kweembrane kunye nesisu, i-placenta ivame ukuphakama ibe yinto ephezulu, enokuthi iyakuboniswa ukuphuhliswa kakhulu kweziganeko. Oku kubizwa ngokuthi "ukufuduka kwephacenta". Umzekelo: ukunikezwa kwekhriyri ngeveki ye-15 kunokuphela ngokupheleleyo kwiiveki ezingama-20-25. Naliphi na isinamathiselo yohluriyo yinto ehlukileyo yesiqhelo, xa umntwana efumaneka kumgama we-3 cm ngaphezu kwe-pharynx yangaphakathi.
Ukuqhawulwa kwamanye amaqela e-pharynx yangaphakathi kwandisa umngcipheko wokulahla kunye nokulahleka kwamathambo. Kodwa nangona kunjalo, emva kokuhlolwa ngokucophelela, ibhinqa lijongwa ngokukhawuleza. Ukuba i-chorion ifumaneke kakhulu kangangokuthi ikhusela ngokupheleleyo i-pharynx, ngokokuqala ekuqaleni kwekota yesithathu yokukhulelwa, nokuba uziva uhamba kakuhle, kuya kufuneka uye esibhedlele. Oku kudibene nomngcipheko okhulayo wokuphuhliswa ngokugqithiseleyo kweplantshi kunye nokuphaphazeka okukhulu okwesongela ubomi bomfazi. Ukuba i-pathology ifunyenwe, ubukhulu be-chorion bulinganiswa kwiiveki ezili-12 kwaye ngaphezulu, okokuqala kwi-trimester yokulingana kufuneka kulingane (ngo-mm) ixesha lokuthoma (kwiiveki). Ukuba umboniso ugcinwa kude kube ngokubeletha, umntwana ubonakala ekukhanyeni kwicandelo lokugcina,
Izizathu
Ukunikezwa kwekhriyri ngeveki ye-11 kudla ngokubakho ngenxa yokuvuvukala okukhulu, oku kudla ukudibana neengxaki emva kokukhipha isisu . Izicubu ze-uterine zonakaliswe, ngenxa yoko iqanda lingenakuzibandakanya kwindawo eyindawo yokuphila kuyo (udonga lwangaphambili okanye olusemva lwentsholongwane). Ukongezelela, ukunikezwa kwekhriyri yeeveki ezili-12 kunokuvela ngenxa yama-myomas amaninzi okanye iindidi ze-uterus. Ngoko ke, xa uceba ukukhulelwa, kucetyiswa ukuba zonke izilonda ezikhoyo zisuswe.