Amangqamuzana avamile weNtshisekelo Yenhliziyo Yengane ku-Trimester Yokuqala
Isilinganiso senhliziyo esisodwa evamile sesifubhe sivame ukuhluka endaweni ethile phakathi kuka-120 no-160 beats ngomzuzu (bpm) phakathi nokukhulelwa, kodwa ekuqaleni kwengxenye yokuqala, izinga lentliziyo yengane lingancipha. Ucwaningo olwenziwa ngo-1996 lwasungula lokhu okulandelayo njengezinga elincane elivamile lezinhliziyo zenhliziyo ekukhulelweni kokukhulelwa kokuqala , ngobukhulu obuhlukahluka ngobukhulu besibalo se- fetal :
- I-embryo engu-2 mm: i-75 beats ngomzuzu
- I-embryo engu-5 mm: ukushaya okungu-100 ngomzuzu
- Umbungu we-10 mm: ukushaya okungu-120 ngomzuzu
- I-embryo engu-15 mm: 130 ukushaya ngomzuzu
Nakuba ukukhulelwa okuphephile kungase kube nenhliziyo yokuqala kwezinga eliphansi kunelezi zimiso, izinga lentliziyo elincane ekukhulelwe kokuqala lihlotshaniswa nengozi ephezulu yokukhulelwa kwesisu . Odokotela bavame ukuncoma ukulandela ama-ultrasound kwabesifazane abanabantwana abanenhliziyo encane yokulinganisela ukuze banqume ukuthi ngabe ukukhulelwa kuyasebenza yini noma cha. Ngeshwa, akukho lutho olungenziwa ukuze kuthinte umphumela; ukukhulelwa kwesisu okwenzeka ngemuva kokubona izinga lokushaya kwenhliziyo kancane ngezinye izikhathi kusho ukuthi ingane isinezinhlobo ezingavamile kusukela ekuqaleni.
Ngokushesha kunokulinganisa kwenhliziyo evamile kubonakala kungenayo ingozi yokweqa kwesisu noma enye imiphumela yokukhulelwa okungalungile.
Akukho bufakazi bokuthi izinga lentliziyo ye-fetal lingakwazi ukubikezela ubulili bomntwana.
Imithombo
Ukuthuthukiswa Kwesimo Senhliziyo - I-Embryonic Heart Rate. Mark Hill. I-UNSW Embryology. http://embryology.med.unsw.edu.au/notes/heart8.htm
I-Coulam, i-CB, i-S.Britten, ne-DMSoenksen, "Okuqala (izinsuku ezingu-34-56 kusukela esikhathini sokugcina esikhathini sokugcina) ama-ultrasonographic measurements in pregnancy evamile." Ukukhiqizwa kwabantu 1996. 11 (8): 1771-1774.
Doubilet PM no-CB Benson. "Inhliziyo ye-embryonic ekuqaleni kwe-trimester yokuqala: isiphi isilinganiso esivamile?" I-Journal of Ultrasound ku-Medicine Stefos,
Theodor I, Dimitrios E. Lolis, Alexander J. Sotiriadis, uGeorge V. Ziakas. "Inhliziyo ye-embryonic ekukhulelweni kokuqala." I-Journal of Clinical Ultrasound 1998. Vol. 26, Issue 1, 33 - 36.
Doubilet, Peter M., uCarol B. Benson noJeanne S. Chow. "Umphumela Wokukhulelwa Ngama-Rapid Embryonic Heart Rates kwi-Early Trimester." I-American Journal of Roentgenology 2000. 175: 67-69