Kuongororwa kweongororo yevakadzi vane pamuviri inoitwa kuitira kuti nguva yakakodzera ione chero kukanganisa kupi zvayo kubva pakugadzirwa kwema fetus uye kutora matanho akakwana. Ultrasound kuongorora kuongororwa kunofanirwa kuitwa katatu panguva yakanyatsotsanangurwa. Yokutanga kuongorora ultrasound kuongororwa kunoitwa kubva kumavhiki 11 uye 1 zuva kusvika kumavhiki gumi nemana. Muchikamu chino, chengetedza kana kune zviratidzo zvehutachiona husina kunaka (zviratidzo zveArt's syndrome, makuhwa makuru europi uye musana, kuvapo kwemakumbo), kusagadzikana munguva yekuzvitakura pachako (hematoma, kuputsika kwepamuviri, kutyisidzika kwekusununguka kwepamuviri).
Kuongorora kwechipiri ultrasound panguva yekuzvitakura kunoitwa mukati memavhiki gumi nemasere uye rimwe zuva uye kusvika pakupera kwemavhiki makumi maviri nemashanu, panguva iyi, mwoyo we fetal inoongororwa nekuda kwekukanganisa, mapfupa ose emapfupa emakumbo, maoko nemakumbo anoongororwa, kuvapo kwemimba, chikwata, hutano hwehuropi, hukuru hwe cerebellum uye mhepo dzoupfungwa dzehuropi, mutsamba wekukura kwekudzivirira maererano netambo, zvinoratidza kukanganisa kwakanga kusina kuonekwa mukutarisa kwokutanga).
Kana kusakanganiswa kusinganzwisisi nehupfu hwemuchechi kwakaonekwa mukutanga kana kwechipiri kuongororwa, ipapo mukadzi angakurudzirwa kuti abvise kuberekwa kwezvikonzero zvekurapa (mushure mekunge panguva iyi, pamuviri haugoni kuvharwa). Kana pane kukanganisa kwekuvandudzwa kwema fetus kana kuparadzana kubva pane zvakasarudzwa, maererano nezviratidzo, kurapwa uye kutarisirwa kwemurwere munguva inotevera yekudzivirira inorayirwa.
Kuongorora kwechitatu kwechirongwa ichi kunoitwa mumakore makumi matatu nemasere kusvika ku3, panguva ino, fetal presentation, kukura kwekuzvitakura, mamiriro epa placenta, kuziva zvose zvinogona kuitika zvinogona kuitika panguva yekuberekwa uye kuronga kurapa kwakakodzera maererano nezviratidzo.
Ultrasound mitsara pavhiki makumi maviri
Kunyange zvazvo chipiri chekuongorora kwechirwere ichi chiri kuitwa pamasvondo 18-21, asi kazhinji kacho mukadzi ane pamuviri anotumirwa kune ultrasound mumavhiki makumi maviri ekuberekwa. Kazhinji, zviyero zvinoputika mukati memavhiki maviri, asi kune dzakawanda zvevhidhiyo zviratidzo zvinoshandisa nguva yekuzvitakura ne ultrasound. Zviratidzo zvinokosha zvekutara nguva:
- biparietal ukuru wehenya (BPR) - pakati peparietal mapfupa ehenya - iri kunze uye nechomukati nechemberi uye pamwe chete;
- kureba kwevakadzi;
- zvinoreva kureba kwechifukidzo (SDHC); zvinoreva mimba kubhiti (SJ);
- frontal-occipital kukura kwekukura (LZR);
- kuwanda kwepentecenta nemamwe maparamendi.
- Ultrasound mumasvondo 18-19 ekuberekwa ane mazano anotevera: BPR 41.8-44.8 mm, LZR 51-55 mm, kureba kwemvura 23,1-27,9 mm, SDH 37,5-40,2 mm, SJ 43 , 2-45,6 mm, uwandu hweparcenta 26,2-25,1 mm, chiyero cheamniotic fluid 30-70 mm (kusvikira pakupera kwekuita pamuviri).
- Ultrasound mumavhiki 19-20 ekuzvitakura : BPR 44.8-48.4 mm, LZR 55-60 mm, femir urefu 27.9-33.1 mm, SDHC 40.2-43.2 mm, SDJ 45.6- 49,3 mm, hupamhi hwepascenta 25,1-25,6 mm.
- Ultrasound mu20-21 vhiki yekuzvitakura - zviyero zvepakati: BPR 48,4-56,1 mm, LZR 60-64 mm, urefu hwemadzimai 33,1-35,3 mm, SDHC 43,2-46,4 mm, SJ 49 , 3-52,5 mm, kuwanda kwepentecenta 25.6-25.8 mm.
Mukuwedzera, pane ultrasound pamasvondo makumi maviri, muyero wepfungwa yemwoyo we fetus (mwoyo wekuda) kubva 130 kusvika 160 kurova paminiti, rhythmic. Ukuru hwemwoyo pa ultrasound mumavhiki makumi maviri ekuberekwa ndewe 18-20 mm, asi zvakakosha kutarisa kuvapo kwemakamuri mana emwoyo, kururamisa kwemidziyo huru, kuvapo kwemagetsi emwoyo, kusavapo kwematambudziko mune dzimwe nyanzvi dzemhepo uye zvakadaro.
Izvi ndezvekuongororwa kwomwoyo kuti ultrasound ye fetus inotarisirwa pamasvondo makumi maviri: muhupo hwezvinhu zvisingawirirani, zvinokurudzirwa kubvisa pamuviri pamatano. Uye kana zviito izvi zvingashandiswa mumazuva ekutanga ehupenyu hwomwana uye nekuita kuti hupenyu hwake huvepo , mukadzi ane pamuviri anotumirwa mberi kune mamwe mazano ekurapa ekutakura uye kushandiswa kwekuvhiya kwakatevera kune mwoyo wemwana.