Ubukhulu bendodana buxhomeke ekutheni ukulethwa kwezidingo kuzokwenzeka kanjani, ngakho-ke ukubala isisindo se-fetus kwabaningi omama esikhathini esizayo kuba yinto ebaluleke kakhulu. Izitho zokuzivikela-izifo zezinkinga zegazi zisebenzisa amafomula amaningana okuvumela ukuba ubale isisindo esilinganiselwe se-fetus kusuka emavikini angu-32 . Kumele kuqashelwe ukuthi idatha yezibalo ezinjalo zihlobene, ngoba zixhomeke ezinhlobonhlobo zezici, kuhlanganise nesakhiwo se-anatomiki somama, inani le-amniotic fluid, isikhundla se-fetus esibelethweni, njalonjalo.
Amafomula wokuzimisela isisindo:
- OZH x VDM
Kule fomula, izindinganiso ezisemqoka yi-circumference yesisu kanye nokuphakama kokuma kwe-uterine fundus. Isibonelo, uma emasontweni angu-32 isisindo somzimba singama-84 cm kanti isibalo sesibili singama-32 cm, khona-ke isisindo esilinganiselwe se-fetus singama-2688. Kubalulekile ukuphinda futhi ukuthi imiphumela yezibalo ezinjalo zihlobene, futhi iphutha lingaba ngu-200-300 g.
- (OZH + VDM) / 4 x 100
Le fomula ikuvumela ukuthi ubale isisindo se-fetus ngesikhathi ukhulelwe. Kulokhu, izinkomba ezimbili (isisu esiswini nesimo sokuphakama kwesimo sesisu) kufanele zihlungwe, zihlukaniswe yizine futhi zande ngamakhulu. Ngakho-ke, ngamapharamitha anikeziwe, isisindo se-fetus sizoba yi-2900 g.
- (VDM - 12 noma 11) x 155
Ifomula yesithathu ibonisa ukuthi ungakanani ukukala kwesisindo somntwana, ngokucabangela izici zomzimba wesifazane. Ngokusho kwefomula ye-Solovyov, i-index ethile isusiwe ukusuka ekuboniseni ukuphakama kokuma kwesibeletho esingaphansi kwesisu (12 - uma isigcawu sesandla salo wesifazane singaphezu kuka-12 cm, 11 - uma singaphansi), bese inombolo yanda ngo-155. Ngenxa yalokho, isisindo somntwana wesibalo sizoba ngu-3100 noma 3255 igremu kuye ngokuthi isakhiwo somzimba womama esizayo.
Ukunqunywa kwesisindo se-fetus nge-ultrasound
Idatha enembile kunazo zonke ingatholakala uma sibala isisindo se-fetus nge-ultrasound. Ukuhlolwa kwe-Ultrasound ikuvumela ukuba unganqangi isisindo somntwana kuphela, kodwa ukuxhumana kwamasayizi akhe ngabanye esikhathini sokukhulelwa. Ukuze ubale isisindo se-fetus amasonto , kunokubala okukhethekile. Uma ufaka yonke idatha ye-ultrasound, ungathola umphumela osondelene nangokoqobo.
Ngemuva kokubala ngamafomu ahlukene futhi ucabangela imiphumela ye-ultrasound, ungabala isisindo esinembile kakhulu somntwana lapho uzalwa. Kubalulekile ukukhumbula ukuthi umzimba ngamunye ungumuntu ngamunye, ngakho-ke uma imiphumela ephakeme noma ephansi kunejwayelekile, kusencane kakhulu ukuze kube nokuthuthumela. Njengomthetho, izinkambiso zingasetshenziswa ngokuqinile kuphela engxenyeni yokuqala yokukhulelwa, lapho ingane isencane kakhulu, kuyilapho ku-trimester yesithathu iphutha lingathola 500 g.