I-placenta iyi inogadzirisa maviri nemubatsiro wekuti kushandiswa kwezvinhu zvinobatsira uye zvigadzirwa zvebasa rinokosha pakati peamai uye fetus zvinoitwa. Kusvikira kumucheche, inosungirirwa nemutsara wembilical. Ikopa iyo inopawo muviri wemwana nekudzivirirwa kweunofuniti: inopinda mumutumbi mucheche wechirwere chemai. Pasina pepente, kukura uye kukura kwe fetus muchizvaro hazvingakwanisi.
Simba relacenta mumutambo wepamuviri unowanzoitika mushure mokunge mwana aberekwa. Maererano nehuwandu, hurumende isati yasvika yepa placenta inowanikwa mune rimwe remakumi masere mashoma. Kubvira pamakumi matatu kusvika makumi matatu kubva kune mashanu kubva kune makumi mashanu kubva pamakumi mashanu ematambudziko akadaro anowanikwa panguva yekuzvitakura, masasa akasara emusangano wepa placenta akanyorwa munguva yebasa, munguva yekutanga.
Zvimwe zvinokonzera musasa wepa placenta
Simba relacenta muvakadzi vane pamuviri kanowanzoitika panguva yekudzivirira kwekutanga. Munzvimbo inowanzoitwa placenta, zvinokonzera masimba ayo zvakakamurwa kuva mapoka maviri:
- Iboka rekutanga rezvikonzero . Kune iyo inokurudzira vanhu vanopikisa kukurudzirwa kwechirwere ichi zvakananga: nephropathy kana kucherekera toxicosis, iyo inopfuurira kwenguva yakareba, uye isina kuporeswa zvachose. Iri boka rinosanganisira zvirwere zveinso, kushaya mwoyo, kukanganisa kweropa, chirwere cheshuga mellitus , kukanganisa kweAdrenal cortex, chirwere chetachiona. Uyewo zvirwere zveropa, kusagadzikana kwechibereko uye maitiro akaitwa nawo, systemic lupus erythematosus. Izvi zvinosanganisira kusanzwisiswa kweH Rh factor uye mapoka eropa emucheche uye amai uye perenashivanie.
- Chikamu chechipiri chezvikonzero . Inosanganisira zvinhu zvinokonzera kukanganiswa kwepasitini kana pane zvinetso zviripo: fetus yakakura, chirwere chepamuviri, kuputika kwemadziro euterine nemhaka yekuwanda kwekudzivirira kana polyhydramnios. Polyhydramnios inogona kukonzera kusununguka kamwe kamwe, kwakakurumidza uye kwakanyanya kweamniotic fluid, iyo inotyisidzirawo kuti ione iyo placenta. Kurwisana kwekubatana kwechibereko chekuita uterine uye kusanyora nekushandisa kushandiswa kwemishonga inonzi uterotonic panguva yekuberekwa muzviitiko zvakawanda zvinoita kuti vanhu vawedzere kukura kwehutachiona.
Izvi zvinokonzera kuti nei placenta iri kufungidzira: kukanganisa kuwirirana pakati pemadziro emuviri uye placenta, kutungamirira kuparara kwemidziyo uye kunokonzera kuora kwemvura (retrocolocular hematomas).
Zviratidzo zvepasta delamination
Zviratidzo zvepachipatara panguva yekuzvitakura zvinoenderana nenguva yekuzvitakura uye chirwere chekurwara. Simba relacenta redigiri rekutanga rekuoma mumatangiro epakutanga haisi nengozi semashure ekupedzisira. Izvi zvinoratidzirwa nekushaiwa ropa. Pakutanga kwekutanga kwekuoma mwana haatambudzi. Muchiitiko ichi, kusvika pamakumi matatu kubva muzana emapententa exfoliates. Nokurapa kwakakodzera, pamuviri unoenderera mberi pasina zvinetso.
Kana kuputika kwepaccenti kuchiitika muhafu (yechipiri chekuwedzeredza), ipapo kune ngozi yekuitika kune izvo zvinokuvadza kuisa placenta - fetal hypoxia, iyo inowanzova chikonzero chekufa kwake. Deta rela placenta inogona kukonzera intrauterine hemorrhage yemukadzi. Zvadaro basa guru nderokuponeswa kwaamai.
Kuparara kwepasitendi kunobatana nemarwadzo emimba, kuwedzera kwepachiviri chemuviri, kusakatika kwechimiro chemucheche. Dhigirii rechitatu rekunyanyisa kunokonzerwa nekuputika kunofambidzana nekuzara kwepascental kubviswa kubva muchibereko. Muchiitiko ichi, nengozi inowanikwa, iyo inosvibisa sangano relacenta ndiyo kufa kwechechi.
Kuchengetedzwa kwepakati peeling
Kurapa, pakutanga, kunoenderana nekuoma kwehutano uye nguva yawakatanga. Kwekanguva kwemavhiki makumi maviri, pamuviri unoedzwa kuchengetedzwa uye kuchengetedzwa nekuchengetedza. Nokuva nemimba yakakwana, vanachiremba vanokurudzira kubereka, uye kana musasa usina basa, mukadzi anogona kubereka oga. Nechisimba chikuru pane imwe nguva inotevera, chikamu chekudya chinoitwa.
Zvishoma zvinoratidzirwa zviratidzo zvemakiriniki chiratidzo chekuchengetwa kwevakadzi vane pamuviri. Panguva imwecheteyo, nyika ye coagulation system inotariswa uye inoongororwa uchishandiswa ultrasound mumagetsi.