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    Dextrocardia

    Dextroversion; Dextrorotation

    Dextrocardia is a condition in which the heart is pointed toward the right side of the chest instead of normally pointing to the left. It is present at birth (congenital).

    Causes

    During the early weeks of pregnancy, the baby's heart develops. Sometimes, for reasons that are unclear, the heart develops and turns so that it points to the right side of the chest instead of the left side.

    There are several types of dextrocardia. Many typesinvolve other defects of the heart and abdomen area.

    The simplest type of dextrocardia is one in which the heart is a mirror image of the normal heart, and no other problems exist. This condition is rare.Often in this case, the organs of the abdomen and the lungs will also be arranged in a mirror image of their normal position. For example, the liver will be on the left side instead of the right.

    Some people with mirror-image dextrocardia have a problem with the fine hairs (cilia) that filter the air going into their nose and air passages. This condition is called Kartagener syndrome.

    In the more common types of dextrocardia, heart defects are present in addition to the abnormal location of the heart. The most common heart defects seen with dextrocardia include:

    • Double outlet right ventricle
    • Endocardial cushion defect
    • Pulmonary stenosis or atresia
    • Single ventricle
    • Transposition of the great vessels
    • Ventricular septal defect

    The abdominal and chest organs in babies with dextrocardia may be abnormal and may not work correctly. A very serious syndrome that appears with dextrocardia is called heterotaxy. In heterotaxy, many of the organs are not in their usual places and may not work properly.

    In heterotaxy, the spleen may be completely missing. Because the spleen is an extremely important part of the immune system, babies born without a spleen are in danger of severe bacterial infections and death. In another form of heterotaxy several small spleens exist, but may not work correctly.

    Heterotaxy may also include:

    • Abnormal gallbladder system
    • Problems with the lungs
    • Problems with the structure or position of the intestines
    • Severe heart defects

    Possible risk factors for dextrocardia include a family history of the condition.

    Symptoms

    There are no symptoms of dextrocardia if the heart is normal.

    Conditions that may include dextrocardia may cause the following symptoms:

    • Bluish skin
    • Difficulty breathing
    • Failure to grow and gain weight
    • Fatigue
    • Jaundice (yellow skin and eyes)
    • Pale skin (pallor)
    • Repeated sinus or lung infections

    Exams and Tests

    There are no signs of dextrocardia if the heart is normal.

    Conditions that can include dextrocardia may cause the following signs:

    • Abnormal arrangement and structure of the organs in the abdomen
    • Enlarged heart
    • Problems with the structure of the chest and lungs, seen on x-rays
    • Rapid breathing or problems breathing
    • Rapid pulse

    Tests to diagnose dextrocardia include:

    • Computed tomography (CT) scans
    • EKG -- a test to examine the electrical system of the heart
    • Magnetic resonance imaging (MRI) of the heart
    • Ultrasound of the heart (echocardiogram)
    • X-rays

    Treatment

    A complete mirror image dextrocardia with no heart defects requires no treatment. It is important, however, to let the child's health care provider know the heart is on the right side of the chest. This information can be important in some exams and tests.

    Treatment for conditions that include dextrocardia depends on whether the infant has other heart or physical problems in addition to dextrocardia.

    If heart defects are present with dextrocardia, the baby will most likely need surgery. Critically ill babies may need treatment with medication before surgery. These medications help the baby grow larger so surgery is less difficult to perform.

    Medications include:

    • "Water pills" (diuretics)
    • Medications that help the heart muscle pump more forcefully (inotropic agents)
    • Medications that lower blood pressure and ease the workload on the heart (ACE inhibitors)

    The baby might also need surgery to correct problems in the organs of the abdomen.

    Children with Kartagener syndrome will need repeated treatment with antibiotics for sinus infections.

    Children with a missing or abnormal spleen need long-term antibiotics.

    All children with heart defects should get antibiotics before surgeries or dental treatments.

    Outlook (Prognosis)

    Babies with simple dextrocardia have a normal life expectancy and should have no problems related to the location of the heart.

    When dextrocardia appears with other defects in the heart and elsewhere in the body, how well the baby does depends on the severity of the problems.

    Babies and children without a spleen may have frequent infections. This is at least partially preventable with daily antibiotics.

    Possible Complications

    Complications depend on whether dextrocardia is part of a larger syndrome, and whether other problems exist in the body. Complications include:

    • Bacteria in the blood (septic shock)
    • Blocked intestines (due to a condition called intestinal malrotation)
    • Congestive heart failure
    • Death
    • Infection (heterotaxy with no spleen)
    • Infertility in males (Kartagener syndrome)
    • Repeated pneumonias
    • Repeated sinus infections (Kartagener syndrome)

    When to Contact a Medical Professional

    Call your health care provider if your baby:

    • Is often ill
    • Does not seem to gain weight
    • Tires easily

    Seek emergency care if your baby has:

    • A bluish tinge to the skin
    • Trouble breathing
    • Yellow skin (jaundice)

    Prevention

    Some syndromes that include dextrocardia may run in families. If you have a family history of heterotaxy, talk to your health care provider before becoming pregnant.

    While there are no known ways to prevent dextrocardia, avoiding the use of illegal drugs (especially cocaine) before and during pregnancy may lower the risk of this problem.

    Talk to your health care provider if you have diabetes, because it may contribute to your risk of having a child with certain forms of dextrocardia.

    References

    Zahka KG. Cardiovascular problems of the neonate. In: Martin RJ, Fanaroff AA, Walsh MC, eds. Fanaroff and Martin's Neonatal-Perinatal Medicine. 9th ed. Philadelphia, Pa: Mosby Elsevier; 2010:part 8.

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    • Congenital heart defect ...

      Animation

    • Dextrocardia

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    • Congenital heart defect ...

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    • Dextrocardia

      illustration

    Review Date: 6/5/2012

    Reviewed By: Kurt R. Schumacher, MD, Pediatric Cardiology, University of Michigan Congenital Heart Center, Ann Arbor, MI. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.

    The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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