I-placenta ekukhulelweni yiyona nxalenye ebaluleke kakhulu edibanisa umama kwintsana kwaye iqinisekise ukusebenza ngokuqhelekileyo komntwana. Emva kwexesha, njengoko imbungu ikhula, i-placenta inesakhiwo sokuguga, okanye, ngokwezenzululwazi, idlula kwiinqanaba ezininzi zokukhula.
Ukukhula kwepentecenta yinkqubo yendalo eyimfuneko ekuboneleleni ngokugcwele komntwana ozayo kunye nazo zonke izondlo eziyimfuneko.
Isiqendu sesibini sokukhula kwepentecenta ngokuqhelekileyo sihambelana nemimiselo ukususela kwi-34 ukuya kweeyure ezingama-37 zesigxina. Ngeli xesha, ubuninzi bomhlaba we-placenta buba buhlungu kakhulu, kufumaneka iziganeko ezicacileyo ezicacileyo. Isiqhamo sokukhula se-placenta sivame ukumiselwa ukuxilongwa kwe-ultrasound, kunye nobukhulu be-placenta, eyona nto ibalulekileyo ekusebenzeni ngokuqhelekileyo kwe-fetus. Kwi-2 degrees yokuvuthwa kwe-placenta, ubukhulu bayo bube kuluhlu ukusuka kwi-28 ukuya kuma-49 mm. Ukungafani phakathi kobunzima be-placenta kunye nexesha lokuvuthwa kubonisa ukuphulwa kwekhosi yokukhulelwa kunye nosongelo olusemngeni.
Iintlupheko kunye neentlupheko ezinxulumene nesantya sokuvuthwa kwe-placenta
Njengoko sele sele khankanywe ngasentla, i-placenta yesibini yesikolo sokukhula ngokuqhelekileyo ihambelana nekota 34-37 yesigxina. Ukuba, nge-ultrasound, ibhinqa libeka ukukhula oku-2 kwe-placenta ngethuba langaphambili, bathi ukuguga kwangaphambili kwe-placenta .
Ukuguga kwangaphambili kwiplacenta
Ubonakaliswe ukuphuhliswa kwangaphambili kwe-placenta (ukuguga), okubandakanya izimo zentsholongwane yempilo. Ininzi idla ngokuthetha nge-hypoxia ye-fetus, oko kukuthi, ukubonelela ngokwaneleyo oksijeni, okukhokelela kwindlala yomoya. Ngethuba elifanayo, ngenxa yokungenelanga okwaneleyo kwintsana enezondlo, kunokuthi kubekho ukungavumelekanga kwinto yemisebenzi yengqondo, kunye nenkqubo yokunikezelwa, ukuqala kokuqala kwangoko kunye nenkambo enzima.
Iimbangela zokuguga kwangaphambili kwephacenta:
- isifo sikashukela nesinye isifo se-hormone kumzimba kamama;
- Ukukhipha isisu, into eyenziwa ngumfazi ngaphambi kokuqala kokukhulelwa;
- Izifo ze-endocrine zomama ozayo (isifo se-thyroid);
- i-toxicosis ekupheleni kwexesha-gestosis;
- ukutshaya okanye ukusela utywala ngumama;
- iingxaki ezingapheliyo zentliziyo;
- i-hepatitis nezinye izifo zesibindi;
- izifo zesistim ye-urinary;
- ukusuleleka kwegciwane lesisu kunye nesisu.
Nangona kunjalo, nangona le nkcazelo esongelayo, ibhinqa efunyaniswa ukuba isigaba sokukhula kwendawo ye-placenta 2 kwixesha elingaphantsi kweeveki ezingama-33 akufanele liyike. Ugqirha uya kunika iimvavanyo ezongezelelweyo kunye neemvavanyo kwi-flow fetal flow flow. Ukuba le ntlupheko ayifumanekanga, ngoko ke lona wesifazane akanakho ukukhathazeka. Kwimeko yokuqinisekiswa kwengozi yangempela kwimpilo eqhelekileyo yobusana, unyango olusebenzayo esibhedlele lubekwe. Njengomgaqo, ikhosi yeziyobisi ijoliswe ekubuyiseleni imisebenzi ye-placenta ukunikezelwa ngokugcwele komntwana kunye nesondlo
2 umlinganiselo wokukhula kwesikhalala ngexesha elingahambelani nesiqhelo alisoloko lithetha ukuba ubukho bentsholongwane. Ukuba ugqirha akaqapheli ukuba usengozini yangempela yokuzalwa kwangaphambi kokuzalwa, mhlawumbi kunokwenzeka ukuba kukho ikhambi lokunyanga ngamachiza e-Curantil okanye amanye amayeza afanelekileyo ekhaya aya kumiselwa. Kwimeko nayiphi na into, ibhinqa kufuneka lilandele ngokungqongqo iingcomo zogqirha kwaye zihlale zikwamukelwa.
Kwaye, kunjalo, uhlala ekhuthaza ukuhamba okukhulu emoyeni ovulekileyo, ubuncinane iiyure ezingama-2 ngosuku. Oku kukuthintela kakhulu kwi-hypocia ye-fetal, kunye neyonyango encedisayo kakhulu yokuguga kwangaphambili kwe-placenta.