Pregnancy Care Nowadays, ultrasound technology is developing rapidly and new scientific techniques are constantly being applied in the clinic. A skilled ultrasonographer can detect some cardiac abnormalities at 18 weeks of pregnancy. An ultrasound examination of systemic malformations and congenital heart disease at 22-24 weeks of pregnancy can find out whether the fetus has fatal defects in the heart. This is the best time for congenital heart disease screening as the fetus reaches a certain level of growth and the heart shows the best images. If a fetus is found to have a heart problem, hurry up and consult a cardiologist first. Generally, simple congenital heart disease or complex congenital heart disease but can be surgically corrected with a good prognosis can be born under the premise of adequate preparation.