Ultrasound inowanikwa mune zvakagadzirwa zvidzidzo panguva yekuzvitakura. Ultrasound inorongwa uye isingarongororwi, iyo yakagadzirirwa ine nguva yakajeka yemazuva ano uye iri kuongorora kuonekwa kwekuzvarwa kwemafuro uye maitiro ekurapa. Yokutanga ultrasound inoitwa mavhiki 9-11, yechipiri pa19-23, uye yekupedzisira ultrasound pakuzvitora kunoitwa pavhiki 32-34.
Sei uchifanira kuendesa ultrasound trimester yekuzvitakura?
Yechitatu yeiyo yakagadzirirwa panguva yekuzvitakura inoitwa nekuda kwezvinangwa izvi:
- kuongorora hutano uye hunoita hutsika hwepa placenta (kubvisa kukwana kusakwanira);
- nechinangwa chekufananidzira kwehutano hwemucheche (kusabvisa kunonoka kwekuvandudzwa kwemukati) uye kunzvimbo yaro mumumvuri wechibereki (musoro, mutsindo, mutambo);
- kutakura fetus biometrics (kuyera rutivi rwemusoro, chiuno nemumumvu), sarudza kufanana kwema fetal size kusvika panguva yekuzvitakura.
Mwana wacho anotarisa sei ultrasound mumutatu wechitatu wekudzivirira?
Pachine ultrasound ye fetus kwemavhiki makumi matatu, zvinogona kuonekwa kuti ganda haritisvi rakanyungudutswa, asi rakanaka. Kurema kwomwana uyu 1400 gm, uye kukwirira kuri 40 cm.
Munguva ye ultrasound pamasvondo makumi maviri nemasere ekuberekwa, iwe unogona kuona kuti uremu hwemucheche ndewe 1900 gm, uye kukwirira kuri masikati 42. Mwana wacho atoita zvakafanana nemurume muduku, ane nhengo dzose dzakagadzirwa, panguva ye ultrasound unogona kuona kufamba kwake (chigunwe chinotyisa, kusungirira nemaoko nemakumbo). Paunenge uchiita ultrasound mu 3D uye 4D, unogona kuona maziso emwana.
Kuongorora kwe fetal biometry pamasvondo makumi maviri nemasere ekuberekwa:
- biparietal size munguva ino inokwana 75-89 mm;
- frontal-occipital uswa ne ultrasound iri 95-113 mm;
- rutivi rwemusoro we fetal inowanzova 283-325 mm;
- rutivi rwechechecheche mucheche muvhiki 32 ndeye 258-314 mm.
Kana uchiyera mapfupa marefu, zvinotevera zvinowanikwa:
- kureba kwevakadzi kune 56-66 cm;
- kureba kwemvura - 52-62 cm;
- kureba kwemafupa echomuputika 45-53 cm;
- kureba kwemapfupa emapfupa ndiwo 52-60 cm.
Paawa ultrasound pamasvondo makumi maviri nematatu ekuberekwa, unogona kuona kuti kuyerwa kwemwana kwakawedzera nema 100 gramu uye kwaive iko 2 kg, uye kukura kwaiva 44 cm.
Kuonga ultrasound, unogona kuona kuti pakutanga kwetatu mamiriyoni ekutora pamuviri, mwana anenge atove akaumbwa uye mumwedzi inotevera ichakura nekushingaira. Nokudaro, mugore rechitatu, zvakakosha kuti amai vanguva inouya vanofanira kudya rationally uye vasingashandisi upfu hwakanaka uye hwakanaka.
Kutakura yechitatu ultrasound pakuberekwa kunosanganisira kutora doppler, kuitira kuongorora kubuda kweropa mumaketheni emubilical cord. Muhupo hwekusakosha, inofanirwa kuitisa doplerometry yemasara anenge asara (pakati pemakemikari arteri, uterine arteri, aorta yemukomana).
Ultrasound mukutora kwekupedzisira
Ultrasound pashure pemasvondo makumi matatu isati yasarudzwa uye inoitwa maererano nezviratidzo. Kana mukadzi atanga kuonekwa achikurumidza kushingaira kumutsamwisa we fetus, uye nehargic kana kunyange akamira kunzwa kunzwa. Chimwe chinoratidza kuti ultrasound inenge ichinge yapera pamuviri ndeyekuvapo kwekuyerera ropa kubva pamatomu ekuberekwa
Sezvatinotarisa, ultrasound pamushure wevhiki 32 wekuzvitora inokosha kukosha yekuongorora kunobvumira kuti uongorore hutachiona hwepascenta munguva, uyewo kuongorora kukura kwe fetus (kushandisa biometrics) nekuteerera kwayo nguva yekubata. Pachine ultrasound mu 3rd trimester, zvinotenderwa kuita umbilical artery doppler.