Mharaunda Yakarongeka yeMwana weMwoyo muDare muTatu Trimester
Izvo zvinowanzoitwa fetal heart rate inowanzosiyana pane imwe nguva pakati pe 120 ne1 160 kurova paminiti (bpm) panguva yose yekuzvitakura, asi mukutanga kwekutanga kwemwedzi mitatu, kutora kwomwoyo kwomwana kunogona kuderera. Chidzidzo che1996 chakagadza zvinotevera sekusingaperi kwemoyo wemwoyo muhutano mukutanga kwepamuviri hukuru, pamwe nehukuru hwakasiyana nekukura kwe fetal pole :
- 2 mm embryo: 75 kurohwa paminiti
- 5 mm embryo: 100 kurohwa paminiti
- 10 mm embryo: 120 kurohwa paminiti
- 15 mm embryo: 130 kurohwa paminiti
Kunyange zvazvo pamuviri unobatsira pane dzimwe nguva unotanga kuve nemwoyo wepasera yakaderera pane mitemo iyi, inononoka mwoyo yehutano muhutano hwepakutanga inobatanidza nehuwandu hwekuparara kwepamuviri . Vanachiremba vanowanzokurudzira kutevedzana kwechirwere chechikadzi kuvana vakadzi vane vana vane mwoyo inononoka kuitira kuti vaone kana kana kutora mimba kuchikwanisika. Zvinosuruvarisa, hapana chinogona kuitwa kuti chigadzire mhinduro; kutapukira kunenge kuchiitika mushure mekuona kuora mwoyo kwepamuviri dzimwe nguva zvinoreva kuti mwana ane chromosomal kusagadzikana kubva pakutanga.
Inokurumidza kudarika inowanzosvika pamwoyo inotaridzika haifaniri kutakura ngozi yakawanda yekusununguka kwepamuviri kana zvimwe zvibereko zvisina kunaka zvekuzvitakura.
Hapana humwe uchapupu hwokuti fetal heart rate inogona kufanotaura nezvehutano hwemwana.
Sources
Cardiovascular System Development - Embryonic Heart Rate. Mark Hill. NDAPE Embryology. http://embryology.med.unsw.edu.au/notes/heart8.htm
Coulam, CB, S.Britten, uye DMSoenksen, "Kutanga (mazuva 34-56 kubva pakupedzisira kwemwedzi). Kuberekwa kwevanhu 1996. 11 (8): 1771-1774.
Doubilet PM uye CB Benson. "Embryonic heart rate mukutanga kwekutanga trimester: ingano ipi inowanzoitika?" Nyaya ye Ultrasound muMitambo Stefos,
Theodor I, Dimitrios E. Lolis, Alexander J. Sotiriadis, George V. Ziakas. "Embryonic heart rate muhutano hwepakutanga." Nyaya yeCliniki Ultrasound 1998. Vol. 26, Nyaya 1, 33 - 36.
Doubilet, Peter M., Carol B. Benson uye Jeanne S. Chow. "Mugumisiro wekuberekwa ne Rapid Embryonic Heart Mitengo muAt Early First Trimester." American Journal of Roentgenology 2000. 175: 67-69