A fetal echocardiogram is an ultrasound test that is usually performed from 18–22 weeks gestation (mid way through a pregnancy). This test may be performed during this time frame or at any time during special instances. This ultrasound is just like a regular OB ultrasound but only the fetal heart is evaluated. Usually one hour is allocated for the test. Some reasons for having this test include:
- A parent or sibling has heart disease
- Maternal medical disease, such as diabetes
- Abnormal fetal heartbeat
- Suspected heart abnormality on the OB ultrasound
A sonographer will look at the fetal heart in detail to evaluate the heart chambers, heart valves and the heart arteries and veins. A special kind of ultrasound, color Doppler, will be used to look at the direction of blood flow. Color Doppler converts the ultrasound waves into colors that mimic the speed and direction of blood flow across the heart valves.
At the end of the examination, you will meet a pediatric cardiologist who has expertise in fetal heart imaging. The cardiologist will review the ultrasound images, explain the results and answer any questions. Your obstetrician will also receive the results of the test.