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Chromosomal and Genetic Conditions

Marfan Syndrome


What Is Marfan Syndrome?

Marfan syndrome is a genetic disorder that affects the connective tissue, including the blood vessels of the heart and the heart valves.

Connective tissue gives strength and support to many parts of the body. Besides the blood vessels and heart valves, the tendons, ligaments and cartilage are all examples of connective tissue.

In Marfan syndrome the connective tissue isn't normal. As a result, certain body parts aren't as strong as they should be. This can cause a range of symptoms from very mild to severe and life threatening.

Heart problems are typically the most serious problems in children with Marfan syndrome. The walls of their major arteries tend to be weak. Often their aorta is affected. If it is, the aorta gets bigger. This weakens the inner wall of the aorta.

A weak inner aortic wall can result in an aneurysm (pronounced AN-yer-iz-em), an area where the wall bulges outward.

A weak inner aortic wall can also tear. Then blood can leak through the tears and separate the layers of the aorta. This problem is called aortic dissection.

Marfan Syndrome in Children

Marfan syndrome is a genetic condition. Children who have Marfan are born with it. Children either inherit it from one of their parents, or it is caused by a genetic change that happened in the child and wasn’t passed down from a parent.

This makes no difference in how doctors treat the condition. But your doctor will want to find out if your child’s condition was inherited. If it was, it may affect either the child’s brothers and sisters, or one of the child’s parents.

Marfan syndrome affects about one in every 5,000 people.

Marfan Syndrome at Seattle Children’s

Our heart team has treated many children with Marfan syndrome. We have extensive experience with the treatment these patients may require, including surgery in some cases. We also have a pediatric cardiac anesthesia team and a cardiac intensive care unit ready to care for children who undergo heart surgery.

When you come to Children's, a team of people will take care of your child. Along with your child's cardiologist, you are connected with neonatologists, pulmonologists (lung doctors), nurses, child life specialists, social workers and others, if their expertise is needed. We work together to meet all of your child's health needs and help your family through this experience.

Since 1907, Children's has been treating children only. Our team members are trained in their fields and also in meeting the unique needs of children. For example, the doctors who give your child anesthesia are board certified in pediatric anesthesiology. This means they have extra years of training in how to take care of kids. Our child life specialists know how to help children understand their illnesses and treatments in ways that make sense for their age. Our expertise in pediatrics truly makes a difference for our patients and families.

The Adult Congenital Heart Disease Program shared by Children’s and the University of Washington can help with care throughout your child’s life.

Who Treats This at Seattle Children's?

Should your child see a doctor?

Find out by selecting your child’s symptom or health condition in the list below:

Summer 2014: Good Growing Newsletter

In This Issue

  • Understanding the Power and Influence of Role Models
  • Legal Marijuana Means Greater Poisoning Risks for Children
  • Why Choose Pediatric Emergency Care?

Download Summer 2014 (PDF)