Why the study?
What are the normal cardiac flow velocities in fetuses at 14-16 weeks of gestation measured by transvaginal ultrasound?
Population
87 normal fetuses at 14-16 weeks of gestation
Design
Cross-sectional
Authors
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May support fixed reference ranges for fetal cardiac flows at 14-16 weeks; leaves open longitudinal validation in larger cohorts.
What are the normal cardiac flow velocities in fetuses at 14-16 weeks of gestation measured by transvaginal ultrasound?
Flow velocities through fetal cardiac valves remain unchanged between 14 and 16 weeks of gestation when measured by transvaginal Doppler sonography.
Benami et al. (2002) studied this question.
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