[Doppler flow evaluation of atrio-ventricular valve blood flow in the fetal heart during the second half of normal pregnancy].
39 normal fetal heart examinations were evaluated since 20 week of gestation to term, and Doppler blood flow was analysed for mitral and tricuspid valves. The measurements were done always in good 4 chamber view and qualitative and quantitative analysis were performed, in terms of describing E and A waves and maximal velocity against gestational age. In all of the cases between 20 and 34 weeks of gestation there were type E < A Doppler waveform, and since 35 week of gestation there was also type E = A. There were only 2 cases with type E > A, both near term. This Doppler waveform may depends on maturity of the fetal myocardium. The maximal velocity for the atrio-ventricular valves did not correlated with gestational age. The average max value for mitral valve was 43 +/- 10 cm/s and for tricuspid valve 50 +/- 11 cm/s (p < 0.01).
Respondek
M
M
Zakładu Diagnostyki Obrazowej CZMP.
Wilczyński
J
J
Kawa
D
D
D001783:Blood Flow Velocity; D005260:Female; D005318:Fetal Heart / Q000000981:diagnostic imaging* / Q000502:physiology; D005865:Gestational Age; D006801:Humans; D008943:Mitral Valve / Q000000981:diagnostic imaging / Q000196:embryology*; D011247:Pregnancy; D012016:Reference Values; D014261:Tricuspid Valve / Q000000981:diagnostic imaging / Q000196:embryology*; D016216:Ultrasonography, Prenatal
Dopplerowska ocena przepływów przedsionkowo-komorowych w sercu płodu w ii połowie ciazy prawidłowej.