Iri shoko idzva romufashoni rakaonekwa mukurapa munguva pfupi yapfuura. Chii chiri kuongorora kuve nepamuviri? Iyi ichitsva chekuedza kuongorora chero kusakanganisika kwemashure ehomoni panguva yekubata kwe fetus. Kuonekwa kwepakati panguva yekuzvitakura kunoitwa kuti uone boka rezvipingamupinyi zvekuberekwa kusina kunaka, somuenzaniso, Down's Syndrome kana Edwards Syndrome.
Migumisiro yekuongororwa kwevakadzi vane pamuviri inogona kuwanikwa mushure mekuongorora ropa kunotorwa kubva mumhino, uye pashure peshure re ultrasound. Zvose zvakanyatsoitika panguva yekudzivirira uye maitiro ehupenyu hwemamai zvinotorwa mukufungisisa: kukura, kuyerwa, kuvapo kwemitemo yakaipa, kushandiswa kwemishonga yehomoni, nezvimwewo.
Ndedzipi zvirongwa zvekudzivirira?
Sezvo mutemo, panguva yekuzvitakura 2 full screenings inoitwa. Vanopatsanurwa nenguva nguva vhiki shomanana. Uye vane zvishoma zvakasiyana kubva kune mumwe.
Kutanga kutarisa katatu
Inopera pamasvondo gumi nemaviri ekupedzisira ekudzivirira. Iyi nyanzvi yekuongorora yakagadzirirwa kutarisa dambudziko rekuberekwa kusakanganiswa mumucheche. Kuongororwa kunosanganisira 2 miedzo - ultrasound uye chidzidzo cheropa rinopa mweya 2 mahomoni-b-HCG uye RAPP-A.
Pamusoro pei-ultrasound, unogona kutsvaga muviri wecheche, iyo yakagadzirwa yakarurama. Purogirati yemucheche yemwana, basa romwoyo wake, inotsvakurudzwa, kureba kwomuviri kunotsanangurwa maererano nezvinodiwa. Zviyero zvakakosha zvinogadzirwa, somuenzaniso, ukuru hwemuviri wechikanda hunotaridzwa.
Sezvo kuongorora kwekutanga kwe fetus kwakaoma, inenge ichangopera kuti iite mhedziso pachikonzero chacho. Kana pane kusava nechokwadi kwehumwe hutachiona husina kunaka, mukadzi wacho anotumirwa kuti awedzere kuongororwa.
Kuchengetedza kwekutanga kwetatu ndiko kuongororwa kwokudzidza. Inotumirwa kune vakadzi vane huwandu hwekuwedzera zvirwere. Izvi zvinosanganisira avo vachazobereka pashure pemakore makumi matatu nemashanu, vane vane chirwere vane mazita emagetsi mumhuri dzavo kana avo vakave nekushaya mimba uye kuberekwa kwevana vane maitiro asina kunaka.
Second Screening
Inowanikwa pamavhiki ekupedzisira kwema18 kusvika ku18. Muchiitiko ichi, ropa rinotorwa kuti riongorore marudzi matatu ehomoni - AFP, b-HCG uye pasina estirol. Dzimwe nguva chiratidzo chechina chinowedzerwa: inhibin A.
Estirol ishizha revakadzi steroid sex hormone yakagadzirwa neparcenta. Kukwana kwakakwana kwekutsvaga kwayo kunogona kutaura pamusoro pekukanganisa kunokonzerwa nekukura kwe fetus.
AFP (Alpha-fetoprotein) ipuroteni inowanikwa mu seramu yeropa reamai. Inoberekwa chete panguva yekuzvitakura. Kana pane kuwedzera kana kupera kweprotheni yakagadzikana muropa, izvi zvinoratidza kutyora kwema fetus. Nekuwedzera kwakakura kwe AFP, rufu rwekuberekwa runogona kuitika.
Kuchengetedza kromosome pathology ye fetus inogona kuitika kana uchitaridzika muzinga we inhibin A. Kuderedza chiyero chechiratidzo ichi chinoratidza kuvapo kwechromosomal kusagadzikana, izvo zvinogona kutungamirira kuchirwere che Down Down kana Edwards syndrome.
Kuongorora maitiro ehupamuviri muhutumbi kwakagadzirirwa kutarisa Down's syndrome uye Edwards syndrome, pamwe neural ne-tube defects, zvikanganiso mumuromo wepamuviri wekare, fetal kidney anomalies.
Down syndrome AFP kazhinji inoderera,
Zvinofanira kunzi kuti kuongorora kwezvinhu zvipenyu kunongoratidza 90% chete yematambudziko e-neural tube kusagadzikana, uye Down's Syndrome uye Edwards syndrome inongogumira mu 70% chete. Izvi zvinoreva, zvinenge makumi matatu kubva muzana zvemigumisiro yezvakaipa uye 10% yezvipo zvenhema zvinoitika. Kuti udzivise kukanganisa, muedzo unofanirwa kuongororwa pamwe chete ne ultrasound ye fetus.