How many echocardiograms are needed during pregnancy?

During pregnancy

, at least one heart ultrasound examination is required, usually between 18 weeks and 20 weeks of pregnancy, mainly to confirm whether the fetal heart structure is normal and to rule out congenital heart disease and other abnormalities. However, if there are special circumstances, multiple examinations may be required. For example, if the pregnant woman has congenital heart disease, valvular disease and other heart diseases, the risk of fetal disease will also increase, often requiring multiple examinations; Second, for some high-risk pregnant women, such as older women, multiple pregnancies, and pregnant women with high blood pressure, diabetes, etc., more frequent cardiac ultrasound examinations may be needed to ensure the heart health of the fetus.