Fetus refers to the unborn child in the mothers womb. Fetal Echo is the name given to the echocardiography (ultrasound of the heart) evaluation of the foetal heart. It provides comprehensive details on the anatomy and operation of the heart, congenital cardiac abnormalities, issues with heart rhythm or rate (Arrhythmia), cardiomyopathy, etc. With the use of 2D echocardiography, these problems are verified after the infant is born.