Ichokwadi, hatigone kuwana tsanangudzo yakasimba, tichivimba chete nemitemo iyi, sezvo mwana mumwe nomumwe ane purogiramu yake pachake, zvichienderana nezvimwe zvinhu. Zvisinei, munhu haafaniri kukanganwa zviratidzo izvi zvakakosha. Somuenzaniso, maererano nehutachiwana hwemwana iwe unogona kutonga hupenyu hwomukomana, kuvapo kwehutachiona, kusadya kwakakwana kwezvibereko kana kutyisidzirwa kwekupera kwekuita pamuviri.
Zvakakosha kuziva kuti kutarisa kuti kukura nekurema kwema fetus zvakasiyana sei nemavhiki ekuzvitakura, unogona kushandisa ultrasound. Iyi nzira inokubvumira kuwana zviyero zvakajeka zvechecheche. Ingova nechokwadi chokuti mwana anokura uye anowirirana maererano nehurongwa anogona kunge ari purogiramu yekuongorora, mushure mokunge gynecologist aenzanisa denderedzwa remuviri uye kukwirira kwechimiro chepasi pechibereko. Mushure mezvose, maitiro aya anosiyana zvichienderana nekukura kwemwana kwemavhiki ekudzivirira. Saka, musati mimba, chibereko chemukadzi ane hutano hwezera rekubereka chinorema anenge 50-60 gm, uye pakuguma kwemazuva ano kukosha kunowanikwa kubva ku 1000-1300 gm. Izvo zvakasikwa, zvichipiwa kuti muviri uyu kwemwedzi mipfumbamwe unofanira kupa mamiriro ezvinhu akasununguka ehupenyu. Saka, apo mwana anokura, ukuru hwechibereko hunowedzera nevhiki imwe neimwe yekuzvitakura.
Nguva dzekuwedzera kwekukura kwemavhiki
Iko tafura chaiyo, iyo inoratidza mavhareji ekukura kwehuwandu uye uremu hwemucheche nevhiki. Zvechokwadi, maitiro chaiwo angasiyana akasiyana neaakaratidzwa, sezvo izvi zvinokonzerwa nemhando dzakasiyana, kusanganisira hutano. Kunyange zvakadaro, mukugadzira mufananidzo wakajeka wezviri kuitika, mutsamba yekukura uye kuyerwa kwechimiro, uyewo chimiro chekuwedzera kwavo, vanoita basa rinokosha. Sezvo mutemo, kuenzanisa kukura kwemucheche kunotangira kubva pakati pekutanga kwetatu, nokuti panguva yekutanga mazuva ekuyeresa kwema embryo achiri mashoma.
Kubva pano maonero, zvinonzwisisika kuita ultrasound vasati vhiki yechisere.
Panguva ino, kukura kwema fetus kunoreva kure kure kubva korona kusvika kune tailbone. Saizvozvowo, ukuru uku kunonzi "coccygeal parietal" uye inosarudzwa seKTP chete. KTP inotarirwa kusvika masvondo 14-20 (zvichienderana nechinzvimbo chemucheche uye unyanzvi hweyanyanzvi anoita ultrasound) nokuti zvisati zvaitika nguva iyi makumbo emakumbo acho akasungirirwa uye hazvibviri kutsanangura urefu hwose.
Kutanga kubva pamasvondo 14-20 ekudzivirira, vanachiremba vanoedza kuenzanisa kure nechemberi kusvika kune korona.
Kutora kukura kwemavhiki
Vakadzi vakawanda vanomhanyira kuita ultrasound nguva pfupi mushure mekurumidza kunonoka. Muchiitiko ichi, iyo ultrasound inogona kungosimbisa kuvepo kwe fetal egg mu uterine cavity uye kuongorora kubhiti kwayo. Sezvo mutemo, pa6-7 yevhiki yekuberekwa kwemaawa ekuberekwa, ichi chinokosha 2-4 mm, uye pa10 - 22 mm. Kunyange zvakadaro, munhu weramangwana anokura zvakasimba uye anokura, nekudaro:
- pakupera kwemavhiki gumi nemaviri, iCTE ye fetus is 6-7 cm;
- Mumavhiki mana anotevera mwana achakura 5 cm;
- uye pamasvondo makumi maviri kureba kubva korona kusvika pasitsitsinho kusvika kusvika masendimita 26;
- mumavhiki makumi maviri nemaviri - 30 cm, uye muna 28-35 cm;
- pamasvondo makumi maviri nemaviri, gumbo rinogona kuita kuti zvikwire mukukura nekuita masendimita manomwe;
- pamasvondo makumi mana vazhinji vevana vakagadzirira kuberekwa, nhengo dzavo uye zvirongwa zvinoumbwa, dzakapora uye dzakakura. Chaizvoizvo, panguva ino kukura kwecheche ichine 45-48 cm;
- zvisinei, mavhiki masere asati asangana musangano unokosha, unhu hauna kurasikirwa pasina. Munguva iyi, vana vanogona kuwedzera 100-300 gm pavhiki uye kukura 1-2 cm;
- kukura kwemwana achangoberekwa kwenguva yakazara kunopararira mukati memakore 48-54 cm.