Ultrasound ndiyo chete nzira inobvumira kufungidzira kubata pamuviri pakukura mumavambo ekutanga. Kuedzwa kwekuita pamuviri kunogona kuva kwakanaka kune ectopic uye pamuviri wakanyanyisa, uye pashure pekudzivirira kwechiedza, zvatova pachena pakutanga kwepamuviri chiri kuitika muchibereko.
Chii chinowoneka pa ultrasound mukutanga kwekutanga?
Kusvikira masvondo matatu ekuberekwa pa ultrasound, pamuviri hahuri kuonekwa, kunze kweiyo pamusana wechinja. Asi kana mukadzi achida kuchengetedza pamuviri, ipapo chirwere chepabonde chinowanzosashandiswa kuti chisakonzera kusununguka kwepamuviri. Mushure memasvondo matatu pamusana wehutachiona hwechirwere, mazai ech fetal anenge atooneka (anotarisa sebhokisi rakati dema mumuberekwa).
Kutanga kufungidzira kuberekwa pamuviri pa ultrasound
Pakutanga kwepamuviri pa ultrasound muchibereko, fetus egg inowanikwa:
- mumavhiki matatu - 0.8 cm;
- mumavhiki mana - 1.4 cm;
- mumavhiki mashanu - 2.0 cm;
- pamasvondo matanhatu - 2.7 cm;
- pavhiki 7 -3.4 cm;
- mumavhiki masere - 4.0 cm;
- mumavhiki 9 - 4.7 cm,
- mumavhiki gumi - 5.3 cm,
- mumavhiki gumi nemaviri - 6.0 cm;
- mumavhiki gumi nemaviri - 6.7 cm;
- mushure memavhiki gumi nemaviri ekuberekwa, fetus haina kuyerwa.
Iyo fetal egg inofanira kunge iri mudumbu. Kana kuedza kwakanaka kwekuita pamuviri muuterine cavity ye fetus hakuwanikwi, inofanira kutsvakwa mu fallopian tubes (ne ectopic pregnancy).
Iyo embryo ye ultrasound mukutanga kwekutanga
Mukuwedzera kune fetal egg, kubva kumavhiki matanhatu ekuzvitakura mucheche unoonekwa, uye yakatanga kuyera. Maererano nehupamhi hwe fetal egg uye embryo, mahwendefa anoona nguva yekubata ne ultrasound. Iyo embryo inoyerwa kubva parietal kusvika kune coccygeal bone murefu, tsoka hadzienzaniswi panguva ino, uku huyu hunonzi coccyx-parietal (KTP):
- kubva pamasvondo matanhatu kusvika kune manomwe ekuberekwa KTR 7-10 mm;
- kubva masvondo manomwe kusvika ku8 KTR 11-15 mm;
- kubva masvondo 8 kusvika ku9 KTR 16-22 mm;
- kubva masvondo 9 kusvika ku10 KTR 23-31 mm;
- kubva masvondo gumi kusvika ku11 KTR 32-41 mm;
- kubva masvondo 11 kusvika ku12 KTR 42-53 mm;
- kubva pamasvondo 12 kusvika ku13 KTR 54-66 mm;
- kubva masvondo 13 kusvika ku14 KTR 67-80 mm.
Kana iCTE ikakura kudarika 80, saka haisi kuyerwa, uye ukuru hwema fetus huchave hwakasiyana, kunze kwetafura kuti uone nguva yekubata. Mukuwedzera pakuyera KTP, iyo inofanira kuwedzera pamwe nenguva yekuzvitakura, kubata pamuviri kunotarirwawo nekushaya moyo kwema fetus, iyo inowanikwa kubva kumavhiki mashanu kusvika ku6, inoonekwa pa ultrasound pavhiki dzema7-8 uye inofanira kuonekwa kubva pavhiki gumi nematatu kubva pamuviri muhupenyu huri mupenyu. Kana mwoyo wako usina kugadziriswa pasati vhiki gumi nemana, iwe unogona kuronga kuongorora ultrasound mushure memazuva gumi, kana isina kuongororwazve, kunze kwekuti, KTP uye fetal egg inokura - kuberekwa kunotonhora.
Pakubuda kweUnited States pamatambo ekutanga ekudzivirira nemavhiki manomwe kunotsanangurira kufamba kwekutanga kwechibereko. Pakutanga iyo isinganzwisisiki, kubva pamasvondo masere ndiko kutenderera kweti, uye kubva mavhiki 9-10 - kufamba nekuwedzerwa kwemakumbo.
Kuwedzera kune zvakataurwa pamusoro apa, paunenge uchiita ultrasound pakutanga kwepamuviri, hutatu hutatu hwechibereko (urefu, hupamhi uye hutema) hunotaridzwa, kuongorora maitiro ayo. Muchiitiko ichi, nyora kana pane zvikamu zvezvikamu zvechibereko, chikwata che fetal egg, chero maitiro muhutachi uye mavha mavari, zvikamu mumukaka. Izvo fetus inoyera kubwinya kwepauchi yepamusoro (kutanga kwekuongororwa kweArt syndrome), kuwanda kwechirion (inotevera placenta).
Ultrasound mumavambo ekutanga ane zvinyorwa zvayo: kusvika kumasvondo matanhatu, imwe mazai muuterine cavity kana zvimwe zvinotarirwa. Apo mazai anoonekwa, ivo pachavo vanotevera kubudirira kweumwe neumwe wavo. Kana mukutanga kwema fetal egg yaive imwe chete, uye kubva mavhiki manomwe kune mazai maviri, zvino tarisai kuti mazai akawanda mavari uye chorion. Kana iyo fetal egg uye chorion imwe chete, zvino michero inoongororwa nekuda kwekunamatira, panguva yakakodzera - nokuda kwekushayikwa kwematambudziko.
Iko kune pfungwa yokuti ultrasound inokutanga inokuvadza, kunyanya nokuti iyo fetal tissue inogona kudziya nekukuvara. Kunyanya izvi zvinoshanda kune fluid-rich tissues (zvakadai seuropi yengwana yeramangwana). Asi iyo ultrasound inogona kutotanga mumatanho ekutanga inoratidza maitiro akaipa, mazhinji ayo asingabvumirane nehupenyu hwomwana asati aberekwa.