Inkqubo yokwakha i- placenta ngexesha lokukhulelwa ligqitywa ngeveki ye-16. Ukususela ngeli xesha, ngexesha lokuhlolwa kwe-ultrasound, iqondo lokukhula kwepentecenta lichongiwe. Ukuqaphela izinga lokukhula kwepenteka kuyimfuneko ephambili yokuxilonga ukugweba ukuba yintoni eyenza imisebenzi yayo: ukuhanjiswa kwe-oxygen kunye nezondlo kwi-fetus.
Indlela yokuqaphela ukukhula kwe-placenta 1, 2, 3?
Kupheleleyo kukho ama-4 degrees of growth of the placenta ukusuka ku-0 ukuya ku-3. Cinga ukuba iziphi iimpawu ze-ultrasound zihambelana nganye kwezi zigaba:
- iqondo lokukhula kwe-placenta 0 lifunyanwe phambi kweveki ye-30 yokukhulelwa. Ngeli xesha, isakhiwo se-placenta sifana;
- iqondo lokukhula kwendawo ye-placenta 1 lichongiwe ukusuka kwiiveki ezingama-28 ukuya kuma-34 zesigxina. Eli nqanaba lokukhula libonakaliswa ngobuncinane beenombolo ze-echogenic inclusions, kunye nokubonakala kobunqamlezo beplora ye-chorionic;
- iqondo lokukhula kwendawo ye-placenta 2 lichongwe ngexesha leeveki ezingama-35-39. Kwi-ultrasound ye-placenta enjalo, ukuchithwa kwecandelo le-chorionic kwanda kwaye inani le-incereyoic inclusions landa;
- iqondo lokukhula kwendawo ye-placenta 3 ingaqheleke kwiiveki ezingama-37 zokukhulelwa. Isiqendu sesithathu sokukhula kwe-placenta sibonakaliswa ngumbumba we-lobular kwaye sichaza i-tortuosity ye-membrane ye-chorionic.
3 ukuvuthwa kwe-placenta phambi kweiveki ezingama-37 okanye ukuvuthwa kwangaphambili kwepentecenta
Ukuvuthwa kokuqala kwiplacenta kubonisa ukungaphumeleli kwe-placenta ekuboneleleni nge-oksijini kunye nezondlo, oko kukukhokelela ekulibazisekeni ekuphuculweni kwe-intrauterine. Izizathu zolu meko zingabakho: i-pathology ye-extragenital, i-preeclampsia, ukuphuma kwamanzi kwi-trimester yokuqala yokukhulelwa, njl njl. Kwiimeko ezinjalo, ngokuqinisekileyo umfazi uya kumiselwa unyango olujoliswe ekuphuculeni ukujikeleza kwegazi kwi-placenta.