Baaritaanka baaritaanka ee haweenka uurka leh ayaa la sameeyaa si loo ogaado wixii isbedel ah ee ka yimaada heerka caadiga ah ee horumarinta uur-jiifka iyo qaadashada tallaabooyinka wakhtiga ah. Baaritaannada baaritaanka ultrasoundka ah waa in la qabtaa 3 goor wakhti go'an oo qeexan. Imtixaanka ugu horeeya ultrasound-ka waxaa la sameeyaa laga bilaabo 11 toddobaad iyo 1 maalin ilaa 14 usbuuc. Qeybtaan, fiiri haddii ay jiraan calaamado muujinaya in ay jiraan calaamado hidde-waduud badan (calaamadaha cudurka Down's syndrome, cilad-darrada maskaxda iyo lafdhabarka, jiritaanka dhumucda), cillado aan caadi aheyn inta lagu jiro uur-qaadida lafteeda (hematoma, xanaaqa gawaarida, khatarta ah dhicin).
Ultrasound baaritaanka labaad ee uurka waxaa lagu sameeyaa mudo ah 18 toddobaad iyo hal maalin illaa dhamaadka 21 toddobaad, inta lagu jiro mudadaas, wadnaha uur-jiifka waxaa la baarayaa joogitaanka cilladaha, dhammaan lafaha tubbooyinka ee addimada, gacmaha iyo lugaha ayaa la eegayaa, joogitaanka caloosha, kaadiheysta, qaabka maskaxda, cabbirka maskaxda iyo maskaxaha maskaxda, waraaqda horumarinta xaamilada sida waafaqsan xadhigga, waxay muujinaysaa isbeddelada aan lagu arkin baaritaanka ugu horreeya).
Haddii cillado aan caadi ahayn oo aan lala socon nolosha noolaha uurjiifka ah ee lagu arkay baaritaanka koowaad ama labaad, markaa haweeney waxaa lagula talin karaa in ay joojiso uurka sababo caafimaad awgood (ka dib xilligaan, uurka looma joojin karo). Haddii uu jiro xad gudub ku yimaada horumarinta uur-jiifka ama is-beddelka caadiga ah, sida ku cad calaamadaha, daaweynta iyo kormeerka bukaanka xilliyada xaamilada ah ayaa la qorayaa.
Baaritaanka saddexaad ee ultrasound ayaa lagu sameeyaa ereyada 31-33 usbuuc, inta lagu jiro mudadaas, bandhigga uurjiifka, baqashada uurka, xaalada mandheerta, waxay tilmaamaysaa dhammaan dhibaatooyinka suurtagalka ah ee dhici kara inta lagu jiro dhalidda iyo inay kuu qoraan daaweyn haboon marka loo eego tilmaamaha.
Xeerarka Ultrasound 20 asbuuc
Inkastoo baaritaanka labaad ee ultrasound-ka lagu sameeyo 18-21 isbuuc, laakiin inta badan haweenka uurka leh waxaa loo diraa ultrasound 20 toddobaad ee uurka. Caadi ahaan, xuduudaha ayaa isbedbeddelaya 1-2 wiig, laakiin badi tilmaamayaasha celceliska ayaa go'aaminaya muddada uurka ee ultrasound. Tilmaamayaasha Muhiimka ah ee go'aaminta muddada:
- biparietal size of the skull (BPR) - inta u dhaxaysa lafaha lafaha miskaha - dusha sare iyo bidixda gudaha iyo kan bidixda;
- dhererka femur;
- dhexroorka xabadka (SDHC); macnaheedu waa dhexroorka caloosha (SJ);
- Cabbirka horay loo yaqaan 'frontal-occipital cranial size' (LZR);
- dhumucda mandheerta iyo xuduudaha kale.
- Ultrasound 18-19 toddobaad ee uurka wuxuu leeyahay heerarka soo socda: BPR 41.8-44.8 mm, LZR 51-55 mm, dhererka dhererka 23,1-27,9 mm, SDH 37,5-40,2 mm, SJ 43 , 2-45,6 mm, dhumucda mandheerta 26,2-25,1 mm, qiyaasta dareeraha amniotic 30-70 mm (ilaa dhammaadka uurka).
- Ultrasound 19-20 toddobaad ee uurka : BPR 44.8-48.4 mm, LZR 55-60 mm, dhererka dherer 27.9-33.1 mm, SDHC 40.2-43.2 mm, SDJ 45.6- 49,3 mm, dhumucda mandheerta 25,1-25,6 mm.
- Ultrasound 20-toddobaadkii uurka uurka - xuduudaha caadiga ah: BPR 48,4-56,1 mm, LZR 60-64 mm, dhererka dhererka 33,1-35,3 mm, SDHC 43,2-46,4 mm, SJ 49 , 3-52.5 mm, dhumucda mandheerta 25.6-25.8 mm.
Intaa waxaa dheer, on ultrasound at 20 toddobaad, heerka garaaca wadnaha ee ilmaha caloosha (garaaca wadnaha) laga bilaabo 130 ilaa 160 garaac halkii daqiiqo, ritmic. Cabbirka wadnaha ee ultrasound ee 20 toddobaad ee uurka waa 18-20 mm, halka ay lagama maarmaan tahay in la hubiyo joogitaanka dhamaan 4 quluubta wadnaha, saxnaanta maraakiibta ugu muhiimsan, jiritaanka wadnaha wadnaha, maqnaanshaha cilladaha ku dhaca septum iyo sidoo kale.
Waxaa loogu talagalay baaritaanka wadnaha ee ultrasound ee uur-jiifka la beegsanayo 20 toddobaad: haddii uu jiro jirro khaas ah, waxaa lagu talinayaa in la joojiyo uurka sababo caafimaad awgood. Haddii cunnida loo adeegsan karo maalmaha ugu horreeya ee nolosha cunuga oo hubiyo in uu mustaqbalka sii wadi karo, haweeneyda uurka leh ayaa horay loogu sii gudbin doonaa xarumo caafimaad oo gaar ah oo loogu talagalay dhalmada iyo faragelinta dambe ee qalliinka ee wadnaha ilmaha.