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  • Your Heart & Circulatory System for Kids


    Your heart is a hard-working muscle. Find out more in this article for kids.

  • Arrhythmia (Abnormal Heartbeat) for Parents


    An arrhythmia is an abnormal heartbeat usually caused by an electrical "short circuit" in the heart. Many are minor and not a health threat, but some can indicate a more serious problem.

  • Hypoplastic Left Heart Syndrome (HLHS) for Parents


    Hypoplastic left heart syndrome (HLHS) is a birth defect of a baby’s heart. The left side of the heart doesn’t grow as it should, making it smaller and weaker than normal.

  • Heart and Circulatory System for Teens


    The heart and circulatory system (also called the cardiovascular system) make up the network that delivers blood to the body's tissues.

  • Ventricular Assist Device for Parents


    A ventricular assist device is a mechanical pump that takes over for the heart and pumps blood. This can give a weak or injured heart time to heal or support someone as they wait for a heart transplant.

  • Tetralogy of Fallot (TOF) for Parents


    Tetralogy of Fallot (TOF) is a combination of problems caused by a birth defect that changes the way blood flows through the heart.

  • Atrial Septal Defect (ASD) for Parents


    Atrial septal defect (ASD) — also known as a "hole in the heart" — is a type of congenital heart defect. Most ASDs are diagnosed and treated successfully.

  • Patent Ductus Arteriosus (PDA) for Parents


    The ductus arteriosus is a blood vessel that connects two major arteries before birth and normally closes after a baby is born. If it stays open, the result is a condition called patent ductus arteriosus (PDA).

  • Cardiomyopathy for Parents


    Cardiomyopathy is when the heart muscle becomes weak and enlarged. This makes it hard for the heart to pump blood through the body. Treatments can help with the symptoms and sometimes stop it from getting worse, but usually there's no cure.

  • Heart Disease for Kids


    Heart disease, also called cardiovascular disease, mainly affects older people. Find out more in this article for kids.