The prenatal stage of any pregnancy is an extremely crucial phase. Abnormalities in the cardiac function of the foetal health during the first trimester of the pregnancy may cause miscarriage, congenital heart disease, and twin‐to‐twin transfusion syndrome. To diagnose abnormal cardiac function, it is essential to fully assess the healthy foetus in the first‐trimester. The prenatal stage of any pregnancy is an extremely crucial phase. Abnormalities in the cardiac function of the foetal health during the first trimester of the pregnancy may cause miscarriage, congenital heart disease, and twin‐to‐twin transfusion syndrome. To diagnose abnormal cardiac function, it is essential to fully assess the healthy foetus in the first‐trimester.