Ka halofo ea bobeli ea bokhachane, lesea le fetela ka matla (mosali eo a lekana le mehato e 15 hora), o qala ho hōla le ho theola boima ba 'mele. Papali ea libeke tse mashome a mabeli a metso e mene e utloa hantle 'me e arabela lentsoe la' mè. Bolelele ba lesea ka libeke tse 26 ke 32 cm, boima ba eona ke 900 g.
Boimana bo hlahelang ka tloaelo ha bo ame boiketlo ba 'mè. Ha hoa lokela ho ba le ho ruruha maotong, boholo ba lesea ka libeke tse mashome a mabeli le metso e mene e le monyenyane ho thibela ho tsoa ha liphio. Empa haeba ho e-na le matšoao leha e le afe, u lokela ho ea ho setsebi sa basali bakeng sa tlhahlobo, e etsoang hang ka libeke tse peli nakong ena.
Li-fetus libeke tse 25-26 tsa bokhachane
Matsatsing ana, lesea le lokela ho bontša boholo bo latelang ba ultrasound:
- BDP ( biparietal boholo ba lehata ) - 63.0 - 65.1 mm;
- LTE (boholo ba parietal e ka pele) - 78 - 83 mm;
- SJ (boima ba mpa) - 66.1 - 68.9 mm;
- SDHK (bophara bo boholo ba sefuba) - 58.6 - 60.7 mm;
- DB (bolelele ba letheka) - 46.1 - 48.0 mm;
- Boima ba placenta ke 29.3 - 30.0 mm, bo lumellanang, ntle le ho bala kapa li-cysts.
Li-fetus libeke tse 26-27 tsa bokhachane (boholo ba ultrasound)
- BDP (biparietal boholo ba lehata) - 65.1 - 69.2 mm;
- LTE (boholo ba parietal e ka pele) - 83 - 88 mm;
- SJ (boima ba mpa) - 68.9 - 71.3 mm;
- SDHK (bophara ba sefuba) - 60.7 - 62.9 mm;
- DB (bolelele ba hip) - 48,0 - 50,9 mm;
- Botenya ba placenta ke 30.6 - 32.6 mm, e lekanang, ntle le lipalo kapa li-cysts.
Nako (kholumo e phahameng) ea amniotic fluid e lokela ho ba ka hare ho 35 - 70 mm. Mokokotlo oa motsoako o lokela ho ba le likepe tse 3. Ka pelong likamore tsohle tse 'nè le li-valve tsohle li bonahala ka ho hlaka, tsela ea lijana tse khōlō (aorta le methapo ea pulmone) e lokela ho nepahala. Palo ea pelo e lokela ho ba ka hare ho 120-160 ka motsotso, pina e nepahetse.
Metsamao ea fetal e lokela ho bonahala ka ho hlaka ho ultrasound, hlooho (hangata e se e le gluteal), hlooho e tsitsitsoe pele (ntle le ho eketsa). Liphetoho leha e le life ka boholo bo ka tlase li ka 'na tsa bontša lefu la retard fetalation, ka tsela ea ho eketseha - mohlomong e le boima bo fetisisang ba lesea kapa lesea le sa hlalosoang ka tsela e fosahetseng.