Zvakanaka, panguva yekuzvitakura, placenta ine unhu humwe, hunotungamirirwa nevhiki. Saka pamasvondo makumi maviri nematanhatu emutsetse kubwinya kwenzvimbo yemwana kunofanira kuva 3.3 masentimita. Pamasvondo makumi maviri nemashanu, inowedzera kusvika ku3,9 masentimita, uye atova pamasvondo makumi maviri nematatu ekuberekwa, uwandu hwepentecenta hunokwana 4.6 masentimita.
Kana mucheka wepenteka unoonekwa panguva yekuzvitakura, izvi zvinogona kuratidza utachiona hwemukati hweutraus. Muchiitiko ichi, zvakakosha kudarika kuongororwa ropa kwe toxoplasmosis kana cytomegalovirus.
Kana mukadzi ane pamuviri ane ruvara rukuru kupfuura rwemazuva ose, ipapo mukadzi anocherechedzwa neyanyanzvi uye anotumira kune ultrasound uye CTG. Izvo chete nekuda kwekuongororwa kwakadaro iwe unogona kunyatsotsanangura kuvepo kana kusavapo kwezvirwere mumwana.
Zvinokonzera mawere akadzika
Zvinokonzera kukanganisa kuwedzera kwepentecenta zvinogona kunge zvakadai:
- zvirwere zvehutachiona;
- zvirwere zvinotapukira;
- rhesus-kurwisana mukuzvimba ;
- chirwere cheshuga chemwana;
- anemia yakaoma;
- dambudziko rekuparara kwepamuviri;
- multiple pregnancies;
- gestosis;
- kudarika kana kushayikwa kuyerwa kwevakadzi vane pamuviri.
Migumisiro yemazamu akadzika
Apo nzvimbo iyo yemwana inova yakawanda, maverengi anoonekwa anokanganisa kushanda kwepa placenta. Somugumisiro wezviitiko zvakadaro, fetus haina kuwana oxygen yakakwana, uye izvi zvinokanganisa intrauterine yayo kukura. Mukuwedzera, nekuda kwekuzvikudza kwepentecenta, hutachiona hwehutachiona hunoderera, hunotyisidzira nekuguma kwekudzivirira kana kubereka nguva isati yasvika.
Mumatambudziko akaoma ekuwedzera kwepentecenta, kufa kwekuberekwa kwevana vasati vaberekwa uye mushure mutsva wepentecenta zvinogoneka. Kuti adzivise migumisiro inotyisa, chiremba anorayira kuongororwa kwakawedzerwa pakarepo paanenge achifungidzira pasi rakasvibira. Kana kutya kwake kuchigadziriswa, akabva atora chirwere ichi.