Ngokufanelekileyo, ngexesha lokukhulelwa, i-placenta inomlinganiselo othile, ulawulwa yiveki. Ngaloo-22 ngeveki yekota, ubukhulu bendawo yomntwana kufuneka kube ngu-3.3 cmenti. Kwiiveki ezingama-25, iyakhula ukuya kuma-3.9 centimeters, kwaye sele ivele kwiiveki ezingama-33 zokukhulelwa, ubukhulu be-placenta ngu-4.6 centimeters.
Xa i-placenta ekhudlwana ibonakala ngexesha lokukhulelwa, oku kunokubonisa ukusuleleka kwe-intrauterine yesisu. Kule meko, kuyimfuneko ukudlulisa ukuhlolwa kwegazi malunga ne-toxoplasmosis okanye i-cytomegalovirus.
Ukuba owesifazane okhulelwe unendawo ephambili kuneyona evamile, ngoko ibhinqa lijongwa yingcali kwaye liyithumela kwi-ultrasound ne-CTG. Ngombulelo kuphela kwiimviwo ezinokuthi unqume ngokuchanekileyo ubukho okanye ukungabikho kwamathambo kwintsana.
Iimbangela ze-placenta eninzi
Iimbangela ezichaphazela ukunyuka kwe-placenta zingaba ngale ndlela:
- izifo zentsholongwane;
- izifo ezithathelwanayo;
- i-rhesus-conflict in pregnancy ;
- wesifo sikashukela;
- ukhululo lwegazi;
- usongelo lokukhulelwa kwesisu;
- ukukhulelwa okubanzi;
- gestosis;
- ukugqithisa okanye ukungahambi ngokulinganisela komfazi okhulelweyo.
Iziphumo zeepentecenta ezinqamlekileyo
Xa indawo yomntwana iba yimbi, kubonakala ukuba kubalwe ukuchaphazela ukusebenza kwepentecenta. Ngenxa yeenkqubo ezinjalo, umntwana akafumani oksijini okwaneleyo, kwaye oku kuyachaphazela ukuphuhliswa kwe-intrauterine. Ukongezelela, ngenxa yobuqhophololo be-placenta, umsebenzi wayo we-hormonal uyancipha, osibangela ukupheliswa kokukhulelwa okanye ukubeletha ngaphambi kwekota.
Kwiimeko ezinzima zokwanda kwamaplacenta, ukufa komntwana wesifo sokubeleka komntwana kunye nesigxina esasemva kwe-placenta kunokwenzeka. Ukuze ugweme imiphumo emibi, ugqirha unika uviwo olongezelelweyo ngokukhawuleza xa ekhankanya i-placenta. Ukuba ukwesaba kwakhe kuqinisekiswa, ngoko kwangoko waphatha lesi sifo.