Original articleQuantitative assessment of right ventricular function using doppler tissue imaging in fetuses with and without heart failure
Section snippets
Study subjects
The study group consisted of 43 fetuses (36 control and 7 fetuses with heart failure). The control fetuses (16-39 weeks gestation) were referred for echocardiography secondary to family history of congenital heart disease, fetal arrhythmia (not present at time of study), or an abnormality of another organ system noted on obstetric sonography. No evidence of structural cardiovascular disease was detected by 2-dimensional/Doppler echocardiography. The fetuses with heart failure (27-35 weeks
Control fetuses
In control fetuses, the mean values for Ea, Aa, Ea/Aa, and Sa were 5.59 ± 1.24, 7.24 ± 1.40, 0.78 ± 0.16, and 5.08 ± 1.293 cm/s, respectively. Figure 2 illustrates the relationships between age and RV myocardial wall-motion velocities. The Ea, Ea/Aa, and Sa increased significantly with increasing gestational age, whereas Aa was generally unaffected. The mean values for E, A, and E/A were 34 ± 7, 44 ± 7, and 0.78 ± 0.12 cm/s, respectively. Figure 3 illustrates the relationships between age and
Discussion
This study demonstrated a clinically important application of DTI-derived tricuspid annular velocities in fetuses with heart failure.
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Tissue doppler is more sensitive and reproducible than spectral pulsed-wave doppler for fetal right ventricle myocardial performance index determination in normal and diabetic pregnancies
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