Imigangatho yeFGV kwiiveki zokukhulelwa
Ukulinganisa i-circumference ye-fetus tummy kungekhona ukuze ukwazi ubude bokukhulelwa, kodwa ukubeka iliso uphuhliso jikelele. Kule ngqangi, ikhishwe ngeteknoloji yekhompyuter, ithembele kuphela kumongo weemitha zee-parameters zentsana. Ngoko ke, akukho nto ibaluleke kakhulu ubungakanani biparietal (BDP) , intambo yekhanda, i- pancake bone kunye neyezinye. Kuphela ngesiseko sobonke bale parameters sinokugqiba ukuba umntwana ukhula ngokuqhelekileyo, okanye kukho ukuphambuka.
Ngokuphindaphindiweyo, oomama xa befika ekhaya nge-ultrasound, thelekisa ezi ziphumo kunye neetafile ezikhoyo. Musa ukwenza oku, kuba kuphela ugqirha akwazi ukuhlola ngokwaneleyo imeko. Kodwa kufuneka ukwazi ukuba kukho ixesha elaneleyo, kwaye inani elikhutshwe lixhobo lingafanelana nemida ethile. Kukho iinqununu ezintathu ze-OLC - ubuncinci, obuphakathi kunye nobuninzi, kwaye zonke zazo ziqhelekileyo.
Ukuphambuka kwiimeko eziqhelekileyo zokupholisa
Ukuba idatha efunyenweyo ayihambelani namanani etafileni kwaye iyahluke kakhulu kwimigangatho, akufanele udideke ngaphambi kwexesha. Kuye kwezinye iimeko ezi zinto zingabonisa i-gap yentuthuko. Kodwa ngokuphindaphindiweyo kunokubonisa ixesha elichanekanga (ngokukodwa kwi-ultrasound kwi-trimester yesibini) okanye ngokukhulu kakhulu okanye, ngokukodwa, umntwana omncinci, ongathethi naluphi na uhlobo lokugula, kodwa uveliswa ngokwemizimba. Kule meko, yonke imilinganiselo elinganisiweyo iya kuncitshiswa kwaye idibeneyo.
Kodwa ukuba kuncinci kakhulu okanye, ngokuchaseneyo, kuphela isixa esikhulu kakhulu sokuphefumula, sinokuthetha ngento ethile yesifo sesisu okanye i-lag yokukhula jikelele. Ukucacisa ukuxilongwa, kuya kubakho ukuqhuba uviwo olugqithiseleyo kunye nokwenza i-ultrasound emva kweveki ezimbalwa, kuba ngokuqhelekileyo (ngokukodwa kwi-trimetre yesithathu) umntwana uyakhula ngokugqithiseleyo kwaye i-OC inokulingana nedatha evamile.