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Murine Fetal Echocardiography
Published on: February 15, 2013
Evaluation of normal fetal left cardiac function by tissue Doppler imaging
Yongping Lu1, Youbin Deng, Ya'ni Liu
1Department of Ultrasonography, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Summary
Tissue Doppler imaging is a feasible method for assessing fetal left ventricular diastolic function. This technique offers stable measurements, unaffected by fetal heart rate or preload, enhancing diagnostic reliability.
Area of Science:
- Cardiology
- Fetal Medicine
- Medical Imaging
Background:
- Fetal left ventricular diastolic function assessment is crucial for prenatal diagnosis.
- Traditional methods may be influenced by physiological variations.
- Tissue Doppler imaging (TDI) offers a potential alternative for stable measurements.
Purpose of the Study:
- To evaluate the feasibility of TDI for assessing fetal left ventricular diastolic function.
- To confirm the reliability of TDI by comparing it with conventional echocardiography.
- To analyze the correlation between TDI parameters and gestational age.
Main Methods:
- Sixty-one pregnant women underwent fetal echocardiography.
- Conventional Doppler assessed mitral valve flow velocities (E, A, E/A).
- Tissue Doppler imaging measured mitral annulus velocities (Ea, Aa, Sa, Ea/Aa).
Main Results:
- A positive correlation was observed between mitral valve orifice velocities and mitral annulus velocities.
- Both sets of velocities demonstrated an increase with advancing gestational age.
- The most significant changes occurred between 28 and 34 weeks of gestation.
Conclusions:
- Tissue Doppler imaging is a feasible and reliable method for evaluating fetal left ventricular diastolic function.
- TDI measurements are stable and less susceptible to fetal heart rate and preload variations.
- This technique enhances the accuracy of diastolic function assessment in fetuses.
