Chii chinonzi dichorionic twins?
Pakati pemimba yepamuviri , izwi rinoshandiswa kuronga uye kurondedzera kuti fetusi inowanikwa sei mubereki. Nemwana mumwechete (dzimwe nguva anonzi singleton), kune mwana mumwechete, akavharirwa mune rimwechete amniotic sac yakagadzirwa necheriyo imwechete uye inotsigirwa nerimwe placenta. Asi nemapatya, kunogona kuve nekusanganiswa kwakasiyana-siyana. Ikoko kunogona kuva imwechete kana maviri mapapiro , rimwe kana maviri amniotic bags, uye imwe kana maviri emakriyoni.
Mitemo yakadai se dichorionic kana kuti monochorionic inoshandiswa kuzivisa nekutsanangura mababa uye inotaura zvakananga kune nhamba yemakriyoni, kana maviri (rimwe pamwana) kana imwe inogoverwa nevana vaviri.
Chii chiri Chorion?
Iyo mutsara ndeyekunze kwekunze kwemvura inozadza amniotic sac yakakomberedza fetus mu utero. Mapatya anowedzera muzvikwama zvakasiyana zvakapoteredzwa nemakriyoni maviri akasiyana anonzi dichorionic. Izwi rechirevo rokuti "di" rinoratidza zviviri. Zvose dizygotic, kana hama, mapatya zvinonzi dichorionic. Zvimwe monozygotic (zvakafanana) mapatya anogonawo kuva dichorionic. Dichorionic twins ane mapepa maviri, kunyange zvazvo dzimwe nguva placentas inogona kubatana pamwechete. Mapatya ayo ari dichorionic anotsanangurwawo ane diamniotic, sezvo buri amniotic sac ine chando chake chekunze. Dzimwe nguva mapatya anonzi dichorionic anorondedzerwa se dichorionic-diamniotic, kana kuti "Di-Di" mapatya.
Ive Dichorionic Twins Inowirirana kana Fraternal?
Dichorionic mapatya anogona kunge ari hama kana zvakafanana.
Izwi rezvesayenzi kutsanangura mavara maviri kana zygosity , ndeye monozygotic (yakafanana) kana dizygotic (fraternal). Dizygotic twins, iyo inoumbwa kubva kune zygote mbiri dzakasiyana, ichagara ichikura zvakasiyana, nemapapiro maviri, zvikwama, uye zvinyorwa. Zvose mapatya ehama ndezve dichorionic. Monozygotic twins, iyo inoumba kana zygote imwe chete ichiparadzana kuva mbiri, inogonawo kuva dichorionic, zvichienderana ne nguva yekupatsanurwa.
Kana yakangotanga, mukati memazuva mashomanana mushure mekuberekwa, blastocysts mbiri dzakasiyana dzichaita zvakasununguka, zvichiita kuti dichorionic-diamniotic (di-di) twins. Kunenge makumi matatu chete muzana yemamonosita emonozygotic anowira munharaunda iyi.
Apo mapatya anozivikanwa se dichorionic, hazvibviri kutora zygosity yavo uye vanotaura zvakajeka kana ivo vakafanana kana vakoma. Kuwedzerwa kuedzwa, kwakadai sekuongorora DNA, kwaizodiwa kutsunga. Vabereki vakawanda vanonyatsoziva kuti mapatya avo ari hama nokuti vakanga vari dichorionic, asi izvi hazvisi izvo.
Panguva yekuzvitakura, chiitiko chinongororwa uchishandisa ultrasound. Mumwe munyori wenharaunda anotarisa mapurende uye zvivako zvekufukidzira kuti aone ruvara rukuru rwakakomberedza fetus rimwe nerimwe, zvichiratidza chorion. Pakutanga pakuve nepamuviri, mumutambo wekutanga, zvichaonekwa zvakajeka sezvikwama zviviri zvakasiyana neyemuviri wakakura pakati pavo. Gare gare, mumutambo wechipiri, zvinogona kuva zvakaoma kuziva chiitiko, kunyanya kana mabhokisi maviri akabatana pamwe uye achiita sechimwe chinhu. Kana zvisingakwanisi kuziva kusagadzikana panguva yekuzvitakura, kuongorora kwepentecenta mushure mokubereka kunogona kupa mhinduro.
Sources:
Fox, Traci B. "Kubatana Kwakawanda: Kusarudza Chorionicity uye Amnionicity." Thomas Jefferson University Dhipatimendi reRadioologic Sciences Faculty Papers. Yakasvika July 27, 2015. http://jdc.jefferson.edu/cgi/viewcontent.cgi?article=1000&context=rsfp
Moise, Kenneth J., naArgotti, Pedro S. "kukosha kwekuziva kusagadzikana mumapato maviri." Contemporary OB / GYN. Yakasvika July 27, 2015. http://contemporaryobgyn.modernmedicine.com/contemporary-obgyn/news/modernmedicine/modern-medicine-feature-articles/importance-determining-chori?page=full
Al Riyami, Nihal, Al-Rusheidi, Asamaa, Al-Khabori, Murtadha. "Chiitiko chePerinatal chaMonochorionic pakuenzanisa Dichorionic Twin Pregnancies." Oman Medical Journal. , May 28, 2013, p. 173.
Morgan, Matt A. uye Radswiki et. al. "Dichorionic diamniotic twin pamuviri." Radiopaedia.org. Yakasvika July 27, 2015. http://radiopaedia.org/articles/dichorionic-diamniotic-twin-pregnancy
Trop, Isabelle. "Zviratidzo mumifananidzo: Chiratidzo cheTwin Peak." Radiological Society yeNorth America. Yakasvika July 27, 2015. http://pubs.rsna.org/doi/full/10.1148/radiology.220.1.r01jl1468