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Eisenmenger syndrome is a complication of having a heart defect. It is most commonly caused by a large hole in your heart between the two lower heart chambers (ventricles), called a ventricular septal defect (VSD). This heart condition is present at birth (congenital heart disease).
This hole in your heart causes blood to flow or circulate abnormally in your heart. Oxygen-carrying blood (red blood) from the left ventricle mixes with oxygen-poor blood (blue blood) from the right ventricle. This mixed blood then returns to your lungs instead of going to the rest of your body, causing high blood pressure in your lungs. High blood pressure in your lungs (pulmonary hypertension), when significant, can cause serious medical conditions.
Mayo Clinic doctors with special training in heart diseases (cardiologists) treat people who have Eisenmenger syndrome and other congenital heart diseases. For more than 60 years, Mayo Clinic cardiologists have treated thousands of children and adults who have congenital heart diseases.
Cardiologists, heart surgeons and other staff trained to diagnose and treat congenital heart disease work closely with specialists in other areas to provide coordinated, high-quality care. At Mayo Clinic in Minnesota, staff in the Center for Congenital Heart Disease care for people who have congenital heart disease throughout their lives.
Mayo Clinic in Rochester, Minn., is ranked among the Best Hospitals for heart and heart surgery by U.S. News & World Report. Mayo Clinic also ranks among the Best Children's Hospitals for heart and heart surgery.
Read more about Eisenmenger syndrome, congenital heart disease in children and congenital heart disease in adults.
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