Haisi iyo inonyanya kukoshesa kukwanisa kwomukadzi kuti ave nepamuviri uye kutsungirira mwana inotambidzwa nechiratidzo chakadai sechimiro cherefu hwechirwere. Kune vazhinji, kudiwa kuziva ruzivo rwakadaro rwepamuviri hunomuka chete nematambudziko chero panguva yekubata pamuviri. Ngatiedzei kuita mubvunzo uyu, urefu hwechirwere chii, uye chii chinofanira kutyisa kutya.
Mutsva uterine mutsipa
Mukutaura, mumudzimai wese hurefu hwemutsipa wechipfu chechiberekwa hwakafanana, uye hwakaenzana ne 3-4 masentimita. Asi kana chiratidzo ichi chichisvika pamasendimita maviri, zviri kutoitika pamusoro pemutsipa kuti uchengetedze fetus mukati memukuchi kana chibereko chakare chinomanikidza kuenda kunze kwechirongwa, nekuzarura nzira yayo kunze. Iyi mamiriro ezvinhu zvinogona kutungamirira pakuenda pamuviri kana kubereka nguva isati yasvika. Asi, kunyange kana mwana akaberekwa, amai vacho vangangodaro vanobva pamasimba akasimba emadzimai uye uterine mitsipa kwenguva yakareba.
Chirwere chechivharo
Vanachiremba vakakwanisa kugadzirisa zvikonzero zvishoma zvekuwedzera kemukari. Chokutanga chazvo ndechokuti mukadzi akatotambura uye akabereka vana vanoverengeka. Uye yechipiri inzira yakakwana yekutambanudza uye kuwedzera nhengo dzekubereka uye nzira panguva yekuzvitakura. Munguva iyi, urefu hwakareba hwechirwere hunogona kusvika kusvika mamita makumi mana, uye hunokura kusvika kwemavhiki makumi maviri nemashanu. Mushure menguva iyi, apo chibereko chinotanga kugadzirira kugadzirisa kwekutakura,
Kana iri mubvunzo wekuita pamuviri, urefu hwechivharo chakavharwa chechivharo kwekanguva chemasvondo makumi matatu nemaawa makumi mana nemasere haufaniri kuva pasi pecentimita matatu. Zvose izvi zviratidzo zvinoshandiswa pakuongorora kwevakadzi uye nekubatsirwa kwe ultrasound. Kuvimbika kwavo kunokosha zvikuru, nokuti kunoita kuti zvive nyore kubatanidza mufananidzo wakakwana weboka rekuita gestation. Saka, somuenzaniso, kana urefu hwemutsipa uterine husingasvika 3 masentimita pamasvondo 17-20, kuongororwa ndiko " ismiko-cervical insufficiency ", kutyisidzira kudonha kusati kwapera kwomwana mumukadzi uye kuberekwa kusina nguva.