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Assessment of diastolic function of normal fetal heart using dual-gate Doppler.
- Source :
-
Ultrasound in Obstetrics & Gynecology . Aug2018, Vol. 52 Issue 2, p238-242. 5p. - Publication Year :
- 2018
-
Abstract
- <bold>Objectives: </bold>The ratio of mitral peak early diastolic filling to early diastolic mitral annular velocity (E/e') reflects diastolic cardiac function in adults. Dual-gate Doppler (DD) enables measurements of E/e' in the same heart beat. This study was designed to assess the utility of the DD method for measurement of fetal E/e' and determine reference ranges for normal fetuses.<bold>Methods: </bold>This prospective study comprised normal singleton pregnancies undergoing fetal echocardiography between 16 and 36 weeks of gestation. According to the DD method, E-wave velocity on pulsed-wave Doppler and e'-wave on tissue Doppler imaging were measured simultaneously on an apical or basal four-chamber view, and fetal E/e' was calculated. Spearman's correlation coefficient was used to assess the relationship between gestational age (GA) and E-wave and e'-wave velocities and E/e'.<bold>Results: </bold>A total of 133 pregnancies were included in this study and all E/e' measurements were successful. Significant correlation was observed between GA and both left ventricular (LV) E/e' (r s  = -0.666, P < 0.001) and right ventricular (RV) E/e' (r s  = -0.607, P < 0.001). The regression equations for bilateral E/e' were: LV-E/e' = 17.341 - 0.631GA + 0.008 × GA2 (mean ± SD, R 2  = 0.440 ± 1.333); and RV-E/e' = 19.156 - 0.794GA + 0.012GA2 (R 2  = 0.419 ± 1.329).<bold>Conclusions: </bold>Bilateral E/e' of normal fetuses, measured using the DD method, decreased with GA, which is considered to be related to myocardial maturity. DD is a useful and convenient method for evaluating fetal E/e' in order to assess diastolic function in the prenatal period. Copyright © 2017 ISUOG. Published by John Wiley & Sons Ltd. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DIASTOLE (Cardiac cycle)
*FETAL heart
*DOPPLER echocardiography
*HEART function tests
*FETAL echocardiography
*MEASUREMENT of flow velocity
*FETAL heart rate
*PHYSIOLOGY
*BLOOD flow measurement
*COMPARATIVE studies
*FETAL ultrasonic imaging
*GESTATIONAL age
*HEMODYNAMICS
*LONGITUDINAL method
*RESEARCH methodology
*MEDICAL cooperation
*REFERENCE values
*RESEARCH
*EVALUATION research
*FETAL development
Subjects
Details
- Language :
- English
- ISSN :
- 09607692
- Volume :
- 52
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Ultrasound in Obstetrics & Gynecology
- Publication Type :
- Academic Journal
- Accession number :
- 131074310
- Full Text :
- https://doi.org/10.1002/uog.18821