Health Library

Heart Disorders

Detailed information on heart disorders in high-risk newborns

Heart Failure in Children

Heart failure is when the heart can't pump enough blood to the body. In children, it is often caused by a congenital heart defect.

Heart Murmurs in Children

Heart murmurs are extra or unusual sounds made by blood moving through the heart. Many children have heart murmurs. Some cause no problems or go away over time. Others need treatment.

Heart Transplant for Children

A heart transplant is a surgery to replace a diseased heart with a healthy one from an organ donor. This topic describes the transplant surgery for children and what to expect from it.

Heart-Healthy Eating for Children

This offers detailed information on heart-healthy eating for children.

Heat-Related Illnesses (Heat Cramps, Heat Exhaustion, Heat Stroke)

Children and teens are at greater risk for heat-related illnesses for several reasons. They adjust more slowly to changes in air temperature. They also make more heat with activity and sweat less.

Helicobacter Pylori in Children

H. pylori (Helicobacter pylori) is a spiral-shaped germ (bacteria) that infects the stomach. It can damage the tissue in your child’s stomach and the first part of the small intestine (duodenum). This can cause redness and swelling (inflammation). It may also cause painful sores called peptic ulcers in the upper digestive tract.

HELLP Syndrome

HELLP syndrome is a rare but life-threatening condition in pregnancy. It causes red cells in the blood to break down. It also causes problems with the liver, bleeding, and blood pressure. It's often linked with preeclampsia and eclampsia. It often develops before delivery. But it may also occur after delivery.

Hemifacial Microsomia (HFM) in Children

Hemifacial microsomia (HFM) is a congenital disorder. This means that your child is born with it. In this condition, one side of your baby’s face is underdeveloped (hemi means half). HFM usually only affects one side of the face. Sometimes both sides may be affected.

Hemoglobin C Disease

Most people carry hemoglobin A in their red blood cells. Those who carry hemoglobin C, considered an abnormal variation, may develop hemoglobin C disease. This blood disorder develops because the red blood cells break down earlier than they should, leaving too few in the blood and leading to mild anemia.

Hemoglobin E Trait

Hemoglobin E trait is an inherited blood disorder. That means it's passed down through your parent’s genes. Read on to learn more.

Hemolytic Anemia in Children

Hemolytic anemia is a group of disorders in which the red blood cells are destroyed faster than the bone marrow can make them. Learn more about the causes, symptoms, diagnosis, and treatment.