Amai amai vanoziva pakutanga nechecheche wavo vanoitika panguva yekudzidza kwekutanga ye ultrasound. Chidzidzo chimwe nechimwe chine mabasa acho uye chinofanira kuitwa pane imwe nguva. Yokutanga yakagadzirirwa ultrasound inobva pagumi kusvika kwegumi nemaviri vhiki. Chinangwa chekutanga chekushandiswa kwechirwere ndiko kubviswa kwechromosomal kusagadzikana, kujekeswa kwesimba rekuita uye kubviswa kwematambudziko akakomba emufusi.
Muchipiri chechipiri yekuongorora, iyo inoitwa mukati memakore makumi maviri kusvika kwemavhiki makumi maviri nemechipiri, nyanzvi inofunga nezvekushanduka kwezvikamu, inotsvaga hutachiona hwehutano hwepamusoro uye zvinogona kuipa zvehutano hwemwoyo. Parizvino iwe unogona kutotanga kuziva hutano hwemwana.
Izwi rechitatu re ultrasound pakuberekwa riri mumiganhu yevhiki 32-34. Chinangwa chikuru chekudzidza ichi ndechekuona chikamu chekuwana che fetus uye kusabvisa kunonoka uye kusagadzikana kwechecheche.
Basa rechitatu rekusimbisa ultrasound pakuve nepamuviri
Ultrasound ye 3rd trimester ndiyo yekupedzisira kuongorora ultrasound , iyo inosungirwa, iyo inopfuudza amai vamangwana.
Tsanangudzo kuongorora ultrasound 3 trimester ichaita kuti:
- Sarudza nzvimbo iyo mwana aripo kuti atarise nzira yekuita basa: chikamu chepanyama kana chechiesarea.
- Taurai nezvemaatomical data e fetus: ukuru, huwandu hunotarisirwa, uyewo mutsamba wezvakawanikwa zvekare kusvika panguva yekuzvitakura. Pachine ultrasound mu 3rd trimester, zvinokwanisika kuona hutachiona hwema fetus, nekuda kwehutachiona hunoparadzirwa naamai pachavo, mamwe maitiro asina kuonekwa munguva yapfuura. Uyewo, kuongorora ultrasound mu trimester kunogona kuona kuchinja mu cerebral cortex.
- Sarudza chiyero che amniotic fluid. Kana uwandu hweamniotic fluid hunoparadzanisa kubva pane zvakasarudzwa mune hukuru kana hutsika hukuru, izvi zvinogona kuratidza kuchinja mune zvinyorwa zvemasumusi e fetus. Chokutanga pane zvose, teerera kumudumbu, kubwinya kwe fetus.
- Bvisa zvinetso zvinogona kuitika, zvakadai sechimiro chemaitiro akaoma, kusakwanisa kwechirwere, kureva. Izvo zvinogona kudzivirira kubereka kwemazuva ose.
Munguva yekuongorora kwe ultrasound, kuporesa uye motokari yekuita fetus inoongororwa, iyo placenta inoongororwa: iyo nzvimbo uye uwandu, kuvapo kwechirwere chinonzi inclusions muchimiro chayo. Ichi chidzidzo chinoita kuti zvive nyore kugona kukura kwema fetus uye zuva rinotarisirwa rekuendeswa.
Nzira dzechitatu ye ultrasound pakuve nepamuviri
Pamusana pemufambiro we ultrasound mu 3rd trimester, kune chirongwa chakaoma, maererano nezvinoitwa nachiremba kuti aite chiongorori chemukadzi ane pamuviri uye kuwana dhenda yakarurama pamusoro pekusimudzirwa kwe fetus. Iyi prototi inopa pfungwa yakajeka kumudzidzisi wezvakaitika pamusoro pemamiriro emukadzi ane pamuviri uye mwana wake weramangwana. Iyi nyanzvi ichabatsira chiremba nokukurumidza kupindura mune chero mamiriro ezvinhu anogona kuitika panguva yekuberekwa. Munharaunda ye ultrasound, trimester inofanira kutakura mashoko anotevera.
Nhamba yezvibereko, nzvimbo yavo. Zvakanaka, kana fetus ine musoro previa. Uyezve, kuguma kwe ultrasound kune zviratidzo zvakadaro:
- BPR - inowanzoita 7,6-9,1 cm;
- OZH - mutemo we8-10.3 cm;
- OG - mutemo we 8.7-10.4 cm;
- LZR - chimiro che 9.9-11.7 cm;
- DB - inowanikwa ye 5.7-7.1 cm.
Apo ma3 ultrasound akaitwa (masvondo 32-34), uremu hwemucheche hunofanira kunge huri mukati mehupamhi ye 2248-2750 g. Uhupamhi hwepentecenta haufaniri kuenda kudarika 26.8-43.8 mm. Iyo placenta inoguma kutama nekutangira kwechitatu chetatu uye inotora nzvimbo iyo ichave iyo isati yasunungurwa. Uyewo uone kukosha kwekukura kwepentecenta, kutanga pamasvondo makumi matatu, inofanira kuva nechikoro chechipiri chekukura. Nhamba ye amniotic fluid haifaniri kuva inopfuura 1700 ml. Mvura zhinji kana shoma inogona kuratidza kuvapo kwezvirwere mumucheche.