Litlhahlobo tsa ho hlahloba basali ba nang le bakhachane li etsoa ka nako e lekaneng ho khetholla mefokolo efe kapa efe e tsoang ho tloaelehileng ho nts'ets'etsong ea lesea le ho nka mehato e nakong. Liteko tsa ho hlahloba li-ultrasound li lokela ho khannoa ka makhetlo a mararo ka nako e tobileng. Tlhahlobo ea pele ea ho hlahloba ultrasound e etsoa ho tloha libeke tse 11 le letsatsi le le leng ho libeke tse 14. Lethathamong lena, hlahloba hore na ho na le matšoao a sa tloaelehang a liphatsa tsa lefutso (matšoao a Down's syndrome, mahlomola a maholo a boko le mokokotlo, ho ba teng ha maoto le matsoho), ho sa tloaelehang nakong ea bokhachane (hematoma, ho senyeha ka tsela e tšabehang, kotsi ea ho senyeheloa ke mpa).
Tlhahlobo ea bobeli ea ultrasound nakong ea bokhachane e etsoa nakong ea libeke tse 18 le letsatsi le le leng ho fihlela qetellong ea libeke tse 21, nakong ena, pelo ea fetal e hlahlojoa ka boteng ba bokooa, masapo 'ohle a maoto le matsoho a hlahlojoa, boteng ba mpa, senya, mokokotlo oa boko, boholo ba cerebellum le li-ventricles tsa boko, ngollano ea tsoelo-pele ea bokhachane ho latela mohala, ho senola mefokolo e sa kang ea bonoa ha ho hlahlojoa pele).
Haeba maemo a sa tloaelehang a sa lumellane le bophelo ba fetalane a ne a hlokomeloa ka ho hlahloba maikutlo a pele kapa a bobeli, mosali eo a ka 'na a buelloa hore a felise bokhachane ka mabaka a bongaka (kamora nako ena, bokhachane bo ke ke ba sitisoa). Haeba ho na le ho tlōla ha tsoelo-pele ea lesea kapa ho fapoha ho tloha ho tloaelehileng, ho ea ka litlhaloso, phekolo le tlhokomelo ea mokuli lilemong tse latelang tsa bokhachane li laeloa.
Tlhahlobo ea boraro ea ultrasound e etsoa nakong ea libeke tse 31-33, nakong ea nako ena, puisano ea fetal, ho hōla ha bokhachane, boemo ba placenta, ho lemoha mathata ohle a ka 'nang a etsahala nakong ea ho pepa le ho fana ka phekolo e loketseng ho latela lits'oants'o.
Likarolo tsa ultrasound libeke tse 20
Le hoja tlhahlobo ea bobeli ea ultrasound e khannoa libeke tse 18-21, empa hangata mosali ea nang le moimana o romeloa ho ultrasound libeke tse 20 tsa bokhachane. Ka tloaelo, mekhahlelo e fetoha ka hare ho libeke tse 1-2, empa boholo ba karolelano e fana ka maikutlo a hore na nako ea bokhachane ke ultrasound. Lintlha tse kholo tsa ho khetholla nako:
- biparietal boholo ba lehata (BPR) - pakeng tsa masapo a lekaneng - e ka ntle le kahare le kahare le ka hare ho eona;
- bolelele ba mosali;
- bophara ba sefuba (SDHC); e bolela sekhahla sa mpa (SJ);
- tekanyo e ka pele-occipital boholo (LZR);
- bophara ba placenta le lisebelisoa tse ling.
- Li-ultrasound libeke tse 18-19 tsa bokhachane li na le litekanyetso tse latelang: BPR 41.8-44.8 mm, LZR 51-55 mm, bolelele ba femor 23,1-27,9 mm, SDH 37,5-40,2 mm, SJ 43 , 2-45,6 mm, bophara ba placenta 26,2-25,1 mm, boholo ba amniotic fluid 30-70 mm (ho fihlela qetellong ea bokhachane).
- Li-ultrasound libeke tse 19-20 tsa bokhachane : BPR 44.8-48.4 mm, LZR 55-60 mm, femer length 27.9-33.1 mm, SDHC 40.2-43.2 mm, SDJ 45.6- 49,3 mm, bophara ba placenta 25,1-25,6 mm.
- Ultrasound ka libeke tse 20-21 tsa bokhachane - mekhahlelo e tloaelehileng: BPR 48,4-56,1 mm, LZR 60-64 mm, bolelele ba femous 33,1-35,3 mm, SDHC 43,2-46,4 mm, SJ 49 , 3-52.5 mm, bophara ba placenta 25.6-25.8 mm.
Ho phaella moo, ka ultrasound libeke tse 20, tekanyo ea pelo ea lesea (pelo) ho tloha ho 130 ho isa ho 160 e otla ka motsotso, pina. Boholo ba pelo ho ultrasound libeke tse 20 tsa bokhachane ke 18-20 mm, ha ho ntse ho hlokahala ho hlahloba boteng ba likamore tse 4 tsa pelo, ho nepahala ha lijana tse kholo, boteng ba li-valve tsa pelo, ho se be le bokooa linthong tse ling tsa boipheliso joalo-joalo.
Ke bakeng sa ho hlahloba pelo ea hore lesea la motsoako oa ultrasound le thehiloe libeke tse mashome a mabeli: ha ho na le liketso tse sa lumellaneng, ho khothalletsoa ho felisa ho ima nakong ea bongaka. 'Me haeba mekhoa e mebe e ka sebetsoa matsatsing a pele a bophelo ba ngoana' me e tiise hore bokamoso ba hae bo na le botsitso, mosali ea nang le moimana o fetisetsoa esale pele litsing tse khethehileng tsa meriana bakeng sa ho pepa le ho kenella ho kenngoa ha pelo ka pelong ea ngoana.