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Fetal echocardiography
F119Fetal cardiac flow velocity waveforms between 14 and 16 weeks' gestation in normal pregnancies
Author(s) -
BenAmi M.,
Perlitz Y.,
Peleg D.
Publication year - 2000
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1046/j.1469-0705.2000.00015-1-118.x
Subject(s) - medicine , tricuspid valve , cardiology , gestation , gestational age , fetus , mitral valve , cardiac cycle , doppler effect , doppler echocardiography , flow velocity , blood flow , pregnancy , diastole , physics , blood pressure , genetics , astronomy , biology , relaxation (psychology)
Background The purpose of this study was to establish normal values for flow velocity waveforms in fetuses at 14–16 weeks' gestation. Method Doppler waveforms were recorded in 89 normal fetuses at 14–16 weeks' gestation. All scans were performed transvaginally. Peak velocities at E (passive atrial filling) and A (atrial contraction) waves were obtained from tricuspid and mitral flow velocity waveforms. Peak systolic velocities for the ascending aorta and pulmonary artery were also calculated. Linear regression analysis was performed. Results There was no significant correlation between any of the velocities and gestational age.Velocity(cm/sec) r PTricuspid valve peak E‐wave velocity 25.3 ± 4.3 0.04 0.74 Tricuspid valve peak A‐wave velocity 42.7 ± 5.7 0.08 0.48 Mitral valve peak E‐wave velocity 23.0 ± 4.1 −0.02 0.84 Mitral valve peak A‐wave velocity 39.9 ± 5.1 0.01 0.94 Aortic peak systolic velocity 38.5 ± 4.8 0.01 0.96 Pulmonary peak systolic velocity 38.6 ± 4.9 −0.14 0.21Conclusion Fetal cardiac function by Doppler waveform analysis remains unchanged between 14 and 16 weeks' gestation in normal pregnancies.