Mapatya anogona kugovera placenta kana imwe neimwe ine yavo
Kana mapatya kana mawanda achizvarwa, mwana mumwe nomumwe ane zvinodikanwa zvehogijeni, michero, uye kushandiswa kwemarara. Ko mwana mumwe nomumwe anowana pachepa yake, kunyange zvakadaro? Mhinduro haisi nyore uye inobva pane zvimwe zvingashandiswa.
Iyo placenta inhengo inokosha. Panguva yekuzvitakura, basa rayo nderokupa fetus ne oxygen nemuviri. Inobvisawo tsvina. Itareta inoumba pamwe nerusvingo rwechibereko rweamai uye inobatanidza kusvika kumucheche kuburikidza nemutsara wembilical.
Nezvipembenene, nhamba yemascentas inogona kusiyana. Ikoko kunogona kuva nemapapoka akawanda, rimwechete pamucheche, kana kuti imwe placenta inogoverwa nevana. Nhamba yepascentas inogona kuva chiratidzo chezygosity yemapatya, izwi rinoreva kana rakagadzirwa kubva kune rimwechete kana mazai akasiyana.
Two Placentas For Brothers Twins
Dizygotic kana mababa mapatya achagara aine mapaundi maviri. Uyewo anonzi "mukoma" mapatya kana kuti "nhema" mapatya, vana vakangosiyana zvakangofanana nevamwe vanin'ina.
Dizygotic twins inoumba kubva mukubatanidzwa kwemaawa maviri akaparadzana uye maviri murume wemunhu. Muchiitiko ichi, buri mwana ari mucheche achakudziridza pasi.
Dzimwe nguva, zvisinei, malascenta anokura muhukama hwepedyo anogona kuwedzera kana kufungidzira. Izvi zvinogona kuonekwa sechimwe chinhu kana ichionekwa ne ultrasound. Ichokwadi, iyo Minnesota Center for Twin & Family Research inotaura kuti hama dzakabatana uye dzakafanana dzinowanzonyatsozivikanwa uye izvi kuvhiringidzika kazhinji chinhu.
Placentas Yakasiyana Nemamwe Mazwi Akafanana
Monozygotic kana zvakafanana mapatya (anonziwo "chaiwo" mapatya) anogona kuva nemunhu mumwechete kana kuti akagovana pasi, kuitira kuti nhamba yepentecentas inogona kusiyana. Monozygotic yakawanda inowanikwa kubva kune rimwe chete uye musikana unobatana hunoparadzaniswa mushure memubereki. Kana kupatsanurwa kuchiitika pakarepo-mukati memazuva mashomanana mushure mechimbwa-vachaita zvakadai sadizygotic twins, kuisa zvakaparadzana mukati mechiberekero nekukudziridza mapapiro akasiyana.
Zvisinei, kana kupatsanurwa kwakanonoka kwemazuva mashomanana, mazai aya achakura pamwe chete, akagovana placenta. Muzvizhinji zvezviitiko, mawanda aya achavharwa mukati mezvinyorwa zvakagoverwa (kunze kweropa re sac iro rine fetus). Vazhinji vachakurira mumwe nomumwe mukati memakondohwe akasiyana (mukati membrane yakakomberedza sac ye amniotic fluid). Izwi rokuti monochorionic-diamniotic (MoDi) rinoshandiswa kutsanangura iyi mamiriro.
Triplets and Beyond
Muchiitiko chezvikamu zvitatu (uye zvimwe zvipembenene kudarika mapatya), embryo inogona kuumba nenzira yakasiyana. Kungofanana nemapatya, vese vanogona kugovera chikamu uye kuva monochorionic.
Zvinogonawo kuti imwe embryo ive nepareca yakasiyana apo vamwe vaviri vanogovera imwe. Izvi zvinonzi dichorionic uye vana vanogovana pacentente vangave zvakafanana kana mumwe mwana asiri.
Apo mumwe nomumwe wevana vatatu ane vana vavo, izwi rokuti trichorionic rinoshandiswa. Saizvozvowo, kana vana vana mumwe nomumwe vane ruvara rwavo, inozivikanwa sequadchorionic, nezvimwe zvakadaro.
Zvinokonzera Matambudziko
Monochorionic twins inogona kuva pangozi yepine-kusvika-twin kuisira ropa (TTTS). Izvi zvinoitika kune anenge 20 muzana yemamonochorionic mapatya.
Mumamiriro ezvinhu aya, mishonga yeropa inobvumira kusaenzana kweropa kunopinda kumapapiro maviri.
Imwe mapatya yakaderedza kubuda kweropa, kunonoka kukura, uye kudarika amniotic fluid. Mamwe mapatya ane ropa rakawandisa ruchiyerera uye akawanda amniotic fluid, izvo zvingaita kuti mwoyo uome. Ichi chiitiko chinogona kutarisirwa uye chirwere chemaseri chinowanikwa kune dzimwe nguva.
Kazhinji, monozygotic mapatya anoparadzanisa vhiki kana kupfuura mushure mekuberekwa uye kukura pamwe chete neparcenta pamwe chete uye chorion asi iri mune imwe amnion. Monoamniotic-monochorionic (MoMo) mapatya anowanikwa muzasi pasi pe1 muzana yemapatya maviri.
Urwu hutano hwekuzvitora hunofanira kunyatsoongororwa. Iyo mapatya ari panjodzi yekukanganiswa kwetambo, kudzvinyirira kambo, uye mamwe matambudziko.
Izvi ndezvokuti mumwe nomumwe ane tambo yeumbilical asi ari mune imwechete amniotic sac, achivabvumira kuti vaparadzane uye pamwe zvichikuvara.
Shoko Rinobva Kunyanya
Mimba inouya nemibvunzo yakawanda uye imwe inosanganisira mawanda inouya nemamwe. Kuziva kuti urongwa hweplantcenta hwevana vako hunoshanda sei pane hunonakidza. Ingoyeuka mupfungwa kuti dzimwe nguva ultrasound inogona kunyengedza.
> Sources:
> Benirschke K, Kaufmann P. P athology yeHuman Placenta . Berlin: Springer Science & Business Media, 2013.
> Minnesota Center for Twin uye Family Research. MTFS Twin Info uye Inowanzobvunzwa Mibvunzo. University of Minnesota. 2007.