A fetal echocardiogram is an ultrasound examination of a baby's heart during pregnancy. It uses sound waves to produce images of the heart between 18-24 weeks of gestation. This test allows doctors to check the structure and function of the fetal heart, detect any abnormalities in heart rate or blood flow, and prepare for potential postpartum procedures like surgery. While it is generally safe and takes 30 minutes to 2 hours, fetal echo may not identify all birth defects and could inaccurately flag some as present. Knowing the results may help expectant parents better manage the pregnancy and be prepared for the baby's needs after birth.