Ezingqinambayo, kunezinkomba eziningi, ngenxa yokuthi ungayinquma isikhathi sokubeletha, ukutholakala noma ukungabikho kokukhubazeka ekuthuthukiseni i-fetus. Ubukhulu bombarietal inhloko ye-fetal ingenye yalezi zinhlayiya, kunembile kakhulu kunabanye ukutshela ngegama lokukhulelwa. Ubuningi biparietal yekhanda le-fetal linganqunywa ngosizo lokuhlolwa kwe-ultrasound, futhi ukuqonda kwalo esikhathini esivela kumaviki angu-12 ukuya kwangu-28 kuphakame kakhulu. Kulesi sihloko sizocubungula indlela yokukala ubukhulu be-biparietal yekhanda, yiziphi izinkomba zazo ezikudala ezinhlobonhlobo zokuthuthukiswa kwe-fetus kanye nokwehluleka kwayo okuvela kumkhuba ojwayelekile.
Usayizi we-biparietal wekhanda le-fetal livamile
I-BDP yekhanda le-fetal ibanga phakathi kwezingaphandle zangaphakathi nezingaphakathi zomzimba womabili, umzila ohlanganisa izimpondo zangaphandle zamathambo we-parietal kufanele udlule phezu kwe-thalamus. Ukungaphambuki emithethweni yokulinganisa kuholela ekuphambeni kwemiphumela futhi, ngenxa yalokho, hhayi ekunqumeni okulungile kweminyaka yobudala. Ukukhulelwa ngalunye kuhambisana nenani elithile le-BPR ye-fetal ngokujwayelekile. Njengoba isikhathi sokubeletha sanda, usayizi we-biparietal wekhanda le-fetal landa, futhi ekupheleni kokukhulelwa izinga lokukhula kwalo liyehla kakhulu. Isibonelo, i-BDP ye-fetus emasontweni angu-12, ngokwesilinganiso, i-21 mm, i-BDP ye-fetus emavikini angu-13 ngu-24 mm, emavikini angu-16 - 34 mm, emavikini angu-24 - 61 mm, i-BPR emavikini angu-32 ngu-82 mm, emavikini angu-38 - 84 mm, futhi emavikini angu-40 - 96 mm.
Ubuningi biparietal yekhanda le-fetal lilinganiswa kanye nosayizi wangaphambili-wesipilital (LZR), ukulinganisa endizeni eyodwa (ezingeni lemilenze yobuchopho nama-bumps). Izinguquko ngobukhulu balezi zikhombisi ezimbili zihambisana ngokulingana nobude bokukhulelwa.
Ngemuva kweviki lama-38, ukumiswa kwekhanda le-fetal kungashintsha, okuzokwenza ukuthi kunqume ubukhulu be-biparietal yekhanda le-fetal. Ngakho-ke, ngokumiswa kwe-dolichocephalic, i-BDP yekhanda le-fetal liyoba ngaphansi kwejwayelekile.I-Ultrasound ekukhulelweni kwe- BDP ikhanda le-fetus ngendlela evamile kanye ne-pathology
Ubuningi biparietal yekhanda le-fetal kanye nezinye izinkomba livumela ukucacisa ukuphutha okunjalo ekukhuleni kwentombazane njengokubambezeleka kokuthuthukiswa komntwana we-fetus, i-hydrocephalus ne-fetus enkulu. Uma ikhanda le-BDP lenkomba lingaphezulu kunejwayelekile, ungasheshe uphendule iziphetho, udinga ukukala ezinye izingxenye zomzimba wesisu. Ukunyuka okungafani kuzo zonke izikhulu zomzimba (ikhanda, isifuba, isisu) kunikeza isizathu sokuthatha izithelo ezinkulu.
Uma kuphela ukuphakama kwe-biparietal kanye ne-lobinal-occular kwanda (ibanga ukusuka emaphethelweni angaphandle angaphandle angena emaphethelweni wangaphandle wesifuba se-occipital), lokhu kuqinisekiswa kokuthola i-hydrocephalus. Imbangela ye-hydrocephalus emfubusini i-intrauterine infection.
Kulezo zimo lapho i-BDP ye-fetus ingaphansi kwesimiso futhi zonke izilinganiso zayo azihambisani nesikhathi sokubeletha, khona-ke ukuxilongwa kusungulwa - ukuphuza kokuthuthukiswa kwe-intrauterine ye-fetus. Izimbangela ze-ZVUR yi-infection ye-intrauterine ye-fetus, i-hypoxia engapheli, ngenxa yokungakwazi ukusebenza kwe-fetoplacental. Uma
Ukunciphisa i-BDP ye-fetus kanye ne-LZR ngaphandle kokunciphisa ezinye izikhulu zomzimba, ikhuluma nge-microcephaly.
Sihlolisise izindinganiso zenkomba yobuningi biparietal yenhloko ye-fetal, ukubaluleka kwayo ekuphambukeni okujwayelekile nokuphazamiseka.