I-placenta yinto ebaluleke kakhulu kumntwana, kuba yenza yonke imisebenzi efunekayo ebomini. Ukukhula kwe-placenta ayikwazi ukuqinisekiswa ngaphandle kwe-ultrasound.
Ngokukhulelwa okukhulayo, i-placenta ikwakha ubukhulu bayo kwaye yandisa inani leenqanawa kuyo. Kwinqanaba elithile, umzimba uyayeka ukukhula kwaye uqala ukudala. Kukho amanqanaba amaninzi okukhula kwendawo "yomntwana," nganye leyo iyafana nexesha elithile lokuzala umntwana.
Amanqanaba okuvuthwa kwepalamente ngeveki
Igama elithi "ukukhula kwepentecenta" lithetha ukuba utshintsho olubonakalayo lwenzeka kuyo, kuxhomekeke kwimeko yoqeqesho lokukhulelwa. Ngoko ke, kukho isiqhelo esithile sezinga lokukhula komgca, obonisa indlela yokukhulelwa. Kwaye phezulu phezulu lo mfanekiso, imisebenzi embalwa ipentecenta inokuyenza. Kukho amadidi amane okukhula, apho nganye kufuneka ivele ngexesha elithile. Ukuba i-placenta iyavuthwa ngaphambi kwexesha, oku kuya kubangela ukuba:
- i-hypoxia yomntwana;
- libazise ukukhula komntwana;
- hypotrophy ;
- bunzima bokuzalwa.
Isiqhamo sokukhula kwe-placenta 0 sijongwa njengesiqhelo ukuya kwiveki yesithathu yokukhulelwa. Isalathisi esinjalo sithetha ukuba umzimba usemncinci ukuze kuqinisekiswe iimfuno zomntwana.
I-placenta yesiqhelo sesibini sokukhula kuluphawu lobungakanani beminyaka yobudala, ukusuka kwiiveki ezingama-35 ukuya kuma-39. Eli xesha libhekwa njengelona lizinzile, kwaye nangona kwiiveki ezingama-37 ufumene ukukhula kwepalenta yesigaba sesithathu, akukho nto ibangela ukukhathazeka. Kodwa kwimeko yokuhamba ne-placenta ekhulile, i-hypoxia yinto efanelekileyo yenziwe ngu-CTG ukuchonga i-pathologies kunye nokuqhuba icandelo le-care.