| Estimating Fetal Cardiac Output by Doppler Echocardiography |
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Young Mi Hong |
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Department of Pediatrics, College of Medicine, Ewha Womans University, Seoul, Korea |
| 도플러 심초음파에 의한 태아 심박출량에 대한 연구 |
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홍영미 |
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이화여자대학교 의과대학 소아과학교실 |
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| Abstract |
Purpose
: Doppler echocardiography has been used to identify fetal cardiac anatomy and hemodynamics. It can estimate flow velocity, volume, and cardiac output. The purposes of this study were to estimate right and left ventricular stroke volume and cardiac output in fetus, and to see if there were any changes of right and left ventricular parameter with fetal growth.
Methods
: Internal diameter and time velocity integral of the aorta and pulmonary artery were measured during diastole in 101 normal fetuses between 18 and 40 weeks of gestation. Right and left ventricular stroke volume and cardiac output were estimated.
Results
: Diameter and time velocity integral of aortic and pulmoary artey increased significantly as gestational age advanced. Aortic velocity and integral were significantly higher than those of pulmonary artery. Left and right stroke volume and cardiac output increased significantly as gestational age advanced. Right ventricular stroke volume and cardiac output were significantly higher than those of the left ventricle.
Conclusion
: Fetal Doppler echocardiography is useful for evaluation of fetal cardiac anatomy and cardiovascular function. These normal parameters may be helpful when compared with fetal congenital heart disease. |
| Key Words:
Fetal echocardiography, Cardiac output |
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