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Heart Chambers and Valves  
heart anatomy

Copyright © Nucleus Medical Media, Inc.

Blood Flow Through the Heart  

Copyright © Nucleus Medical Media, Inc.

Definition  

Double-outlet right ventricle (DORV) is a rare heart defect. In a normal heart, the blood flows in from the body to the right atrium. It then goes into the right ventricle. Next, the blood travels to the lungs through the pulmonary valve. Here, it picks up fresh oxygen. The blood returns to the left atrium and goes into the left ventricle. The blood moves out to the rest of the body.

Normally, the aorta, which is the largest artery in the body, comes from the heart’s left ventricle. But when DORV occurs, the aorta and the pulmonary artery are attached to the right ventricle.

Another heart defect called ventricular septal defect (VSD) usually occurs with DORV. VSD is a hole in the wall between the right and left ventricle. DORV can be categorized into several types depending on the position of the VSD.

Along with these conditions, the pulmonary valve may be narrowed. DORV is a serious condition. It requires care right away by the doctor.

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Causes  

This condition is a congenital defect. This means that the heart forms incorrectly when the baby is developing in the womb. The baby is born with the condition. It is not known exactly why the heart develops abnormally in some babies.

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Risk Factors  

For many heart defects, the risk factors are unclear. Some risk factors for DORV may include:

  • Family history of congenital heart defect
  • Certain chromosomal disorders
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Symptoms  

Symptoms may vary depending on where the VSD is located. Symptoms may include:

  • Bluish skin color
  • Poor feeding/slow weight gain
  • Fatigue
  • Sweating
  • Rapid breathing
  • Shortness of breath
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Diagnosis  

Your doctor will ask about your child’s symptoms and medical history. A physical exam will be done. During the exam, the doctor may also