Nzira yekuumbwa kwepentecenta panguva yekuzvitakura inopera nevhiki 16. Kubva panguva ino, panguva yekuongorora kwe ultrasound, chiyero chekukura kwepentecenta chinotsanangurwa. Kusarudza chiyero chekukura kwepentecenta ndicho chikonzero chakakosha chokuongororwa chekutonga kuti yakaita sei mabasa ayo: kuberekwa kwe okisijeni nemuviri kune fetus.
Nzira yekuziva sei kukura kwepascenta 1, 2, 3?
Pose pane zvikamu 4 zvekukura kwepentecenta kubva pa3 kusvika ku3. Funga kuti zviratidzo zvei ultrasound zvinopindirana nechimwe chezvikamu izvi:
- chiyero chekukura kwepascenta 0 chinoratidzwa musati vhiki ye30 yekutakura. Munguva iyi, chimiro che placenta chikafanana;
- chiyero chekukura kwe-placenta 1 yakatarwa kubva pamasvondo makumi maviri nemakumi matatu nemakumi matatu ekuberekwa. Iyi yero yekukura inoratidzwa nekuvapo kwenhamba shoma ye echogenic inclusions, pamwe nekuratidzika kwekuora kwekapu ye chorionic;
- chiyero chekukura kwepascenta 2 yakatarwa munguva yevhiki makumi matatu nemasere kusvika matatu. Pamusoro pe-ultrasound ye-placenta yakadaro, kushandiswa kwepakitioni yekrionic inowedzera uye nhamba ye hyperechoic inclusions inowedzera;
- chiyero chekukura kweparcenta 3 chinowanzouya kubva pavhiki 37 yekuzvitakura. Chiyero chechitatu chekukura kwepascenta chinoratidzwa nehupfumi hwekugadzirisa uye yakaratidza kushungurudzika kwechidimbu chechirionic.
3 kusvibiswa kwepentecenta musati mavhiki makumi matatu kana masere kana kutunganidzwa kwepentecenta
Kukura kwekutanga kwepentecenta kunoratidza kusakwanisa kwepentecenta pakupa fetus ne oksijeni nemakemikari, izvo zvinoita kuti kunonoke pakukura kwemukati. Zvikonzero zvechiitiko ichi zvinogona kuva: hutachiwana hwechirwere, preeclampsia, kubuda ropa mumutambo wekutanga wekuita pamuviri, nezvimwewo. Mumamiriro ezvinhu akadaro, mukadzi achanyatsotarirwa kurapwa chinangwa chekuvandudza kupararira kweropa muparcenta.