Single Ventricle Anomalies—Child

(Single Ventricle Lesions—Child)

Definition

Single ventricle anomalies refer to a category of rare heart conditions that can develop in the growing fetus. In a normal heart, the two ventricles work by collecting blood and pumping it to the lungs or the rest of the body. With this condition, one of the ventricles does not develop properly. The defect can be mild to severe. Other heart problems may be present, as well.Examples of single ventricle anomalies include:
  • Tricuspid atresia—tricuspid valve does not develop
  • Pulmonary atresia—pulmonary valve does not develop
  • Hypoplastic left heart syndrome—left side of the heart does not develop properly
  • Double inlet left ventricle—large left ventricle and small right ventricle
Heart Chambers and Valves
heart anatomy
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Causes

These anomalies are congenital defects. This means that the baby is born with the condition. The abnormality develops while the baby is forming in the womb. It is not known exactly why the heart develops this way in some babies.

Risk Factors

Specific risk factors for single ventricle anomalies are often unclear, but they may include:
  • Family history of congenital heart defect
  • Other heart defects
  • Certain chromosomal disorders
  • Environmental exposure to chemicals that cause birth defects

Symptoms

Symptoms may include:
  • Blue or pale grayish skin color
  • Fast breathing
  • Rapid heartbeat
  • Sweating
  • Poor feeding/poor weight gain

Diagnosis

You will be asked about your child’s symptoms and medical history. A physical exam will be done. A heart murmur may be detected during the exam. Your child's bodily fluids may be tested. This can be done with blood tests.Images may be taken of your child's bodily structures. This can be done with:Your child's heart function may be tested. This can be done with:

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June 2015

A meta-analysis found that mothers participating in a prenatal exercise group were less likely to have a large newborn, less likely to need a cesarean section, and no more likely to have a low birthweight baby than those who did not exercise. The study supports proper prenatal care advice which advocates for mothers to exercise during pregnancy if allowed by the physician.

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