Emasontweni angu-18-21 owesifazane unqunywe ukuhlolwa kwesibili kokuhlolwa kokuhlolwa. Kusukela kumasonto angama-24 nje kuphela, ukukhulelwa kungaphazanyiswa ngenxa yezimo zezokwelapha, kungukuhlolwa kwesibili kokuhlola ukuthi odokotela kufanele baqiniseke ukuthi ukungabi khona kwezinkinga ezinzima zokubeletha ezinganeni. Uma kunesidingo, ngalesi sikhathi kungenzeka ukuba uhlole izikhungo ezikwelapha ezifanele - ukuqinisekisa isihluku noma ukususa ukuxilongwa futhi isikhathi esiphezulu salokhu ngamasonto angu-21 okukhulelwa. Ngezinye izikhathi kungase kubonakale sengathi i- 3-D ultrasound ngalesi sikhathi kuzokusiza kangcono ukuhlonza ukuhlukumeza okuhlukile, kodwa ukuhlolwa kwe-ultrasound konke akuxhomeke kuphela kumakhono wedivayisi, kodwa futhi kulesi sifundo sokudokotela.
I-Norm ye-ultrasound emavikini angu-21 wokubeletha
Emasontweni angu-20 kuya kwangu-21 okukhulelwa, ubukhulu obukhulu be-ultrasound bunjengoba:
- ngesonto lama-21, isisindo esilinganisweni se-fetus ngu-300 g;
- ubude bomzimba - kufika ku-16 - 18 cm;
- BDP (ubukhulu biparietal ye-skull) - 48.4 - 51.6 mm;
- I-LTE (usayizi weparietal wangaphambili we-skull) - 60 - 64 mm;
- DB (ubude bethanga) - 33.1 - 35.3 mm;
- I-SJ (ubukhulu besisindo somzimba) - 49.3 - 52.5 mm;
- I-SDHK (ubukhulu besisindo sesifuba) - 43.2 - 46.4 mm;
- ubukhulu be-placenta - 25 - 26 mm, okungafani ngaphandle kokuthola izifo, izinga lokukhula lokukhula;
- ukuphakama kwekholomu ye-amniotic fluid kusuka ku-35 kuya ku-70 mm, amanzi kufanele ahlanzeke.
Phakathi nalesi sikhathi, kubalulekile ukuhlola ukuba khona kwazo zonke izingxenye ezine zenhliziyo nesimo se-valve, hlola inkambo yezingqikithi ezinkulu, izinga lokushaya kwenhliziyo phakathi nalesi sikhathi - kusuka ku-120 kuya ku-160 ngomzuzu, ukushaya kwenhliziyo , ukunyakaza okusebenzayo - okungaphansi kuka-15 ngehora.
Ngalesi sikhathi owesifazane kufanele azizwe ukuhamba kokuqala kwe-fetus, kodwa asebuthakathaka futhi engavamile, kodwa ku-ultrasound ibonakala kahle. Isikhundla se-fetus esibelethweni asikaqiniseki - phakathi nosuku, singakwazi ukuphenduka izikhathi eziningana ngendlela othanda ngayo. Imiphumela ye-ultrasound, lapho amaviki angu-21 okukhulelwa aqala, kufanele afake izilinganiso zakhiwo zobuchopho bomuntu ngamunye: ama-ventricles obuchopho, i-cerebellum, umthombo omkhulu. Qinisekisa ukuthi ulinganisa ubude bazo wonke amathambo we-tubular wengane, hlola isakhiwo sezandla nezinyawo. Esikhathini esiswini se-fetus, isakhiwo sesibindi, ukutholakala kwesisu nesisu, isimo sezinso namathumbu kubonakala.
I-ultrasound ekukhulelwe ngesonto 21-22
Ngeviki, imingcele eyisisekelo ye-ultrasound isivele ishintshe kakhulu futhi ibe nemigomo elandelayo:
- I-BDP (ubukhulu biparietal ye-skull) - 51.6 - 54.2 mm;
- I-DB (ubude bethanga) - 35.3 - 38.3 mm;
- I-LTE (usayizi weparietal wangaphambili we-skull) - 64 - 67 mm;
- I-SJ (ubukhulu besisindo somzimba) - 52.5 - 56.4 mm;
- I-SDHK (ububanzi obukhulu besifuba) - 46.4 - 49.4 mm.
Zonke izivivinyo zesimo se-fetal, okufanele zenziwe ekuhlolweni kokuhlolwa, ziqhubeke zenziwa ngalesi sikhathi. Amaviki angu-21 okukhulelwa yisikhathi lapho ubulili bomntwana obubonakalayo bubonakala ngokucacile kwi-ultrasound: intombazane noma umfana. Ngalesi sikhathi, noma yikuphi ukwehluka okuvela kumkhuba we-ultrasound kufanele kuxoxwe nongcweti ezifanele ukuze kuhlolwe ukuthi kuyahambisana futhi akuhambisani nokuphila komntwana wezinkinga zokuthuthukiswa.