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- $Unique_ID{BRK03854}
- $Pretitle{}
- $Title{Hypoplastic Left Heart Syndrome}
- $Subject{Hypoplastic Left Heart Syndrome Aortic Atresia }
- $Volume{}
- $Log{}
-
- Copyright (C) 1986, 1993 National Organization for Rare Disorders, Inc.
-
- 178:
- Hypoplastic Left Heart Syndrome
-
- ** IMPORTANT **
- It is possible the main title of the article (Hypoplastic Left Heart
- Syndrome) is not the name you expected. Please check the SYNONYMS listing to
- find the alternate names and disorder subdivisions covered by this article.
-
- Synonyms
-
- Aortic Atresia
-
- General Discussion
-
- ** REMINDER **
- The information contained in the Rare Disease Database is provided for
- educational purposes only. It should not be used for diagnostic or treatment
- purposes. If you wish to obtain more information about this disorder, please
- contact your personal physician and/or the agencies listed in the "Resources"
- section of this report.
-
-
- Hypoplastic left heart syndrome is the result of a rare congenital heart
- defect characterized by the failure of the left side of the heart to develop
- sufficiently. The left atrium and ventricle are small, the valves connecting
- the chambers to each other and to the aorta are narrowed, and the aorta is
- abnormally constructed.
-
- Symptoms
-
- The normal heart is divided into four chambers. The blood flows from the
- systemic circulation (i.e., all the tissues except the lungs) into the right
- atrium, and from there into the right ventricle which pumps the blood to the
- lungs. In the lungs, the blood absorbs the oxygen it will carry to the body
- tissues. It then flows to the left atrium, and past the mitral valve into
- the left ventricle. The strong muscle in the walls of the left ventricle
- then force the blood past the aortic valve into the aorta, which delivers the
- blood to the systemic arteries.
-
- In Hypoplastic Left Heart Syndrome, the left side of the heart is not
- developed normally at birth, and the heart cannot pump enough blood from the
- lungs to the systemic circulation. Blood accumulates in the lungs, and
- insufficient oxygen reaches the organs and tissues of the body. Persistent
- heart failure results in difficulty breathing and blue colored skin
- (cyanosis).
-
- Causes
-
- The arrest or abnormality in embryonic development that causes congenital
- heart defects such as left heart hypoplasia syndrome may result from various
- conditions including maternal rubella (measles), excessive alcohol intake, or
- diabetes. Generally, the causes of these disorders are unknown. Rarely,
- hereditary factors play a role.
-
- Therapies: Standard
-
- Treatment for Hypoplastic Left Heart Syndrome may consist of surgical
- intervention. A neonatal cardiologist is best qualified to give parents an
- opinion as to the type of treatment which best suits their child. Heart
- transplantation is another type of therapy used in the treatment of
- Hypoplastic Left Heart Syndrome.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through March
- 1993. Since NORD's resources are limited, it is not possible to keep every
- entry in the Rare Disease Database completely current and accurate. Please
- check with the agencies listed in the Resources section for the most current
- information about this disorder.
-
- Resources
-
- For more information on Hypoplastic Left Heart Syndrome, please contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- American Heart Association
- 7320 Greenville Ave.
- Dallas, TX 75231
- (214) 750-5300
-
- NIH/National Heart, Lung and Blood Institute (NHLBI)
- 9000 Rockville Pike
- Bethesda, MD 20892
- (301) 496-4236
-
- References
-
- THE CECIL TEXTBOOK OF MEDICINE, 18th Ed.: James B Wyngaarden and Lloyd H.
- Smith, Jr., Eds; W.B. Saunders Co. 1988. P. 303.
-
- THE MERCK MANUAL 15th ed: R. Berkow, et al: eds; Merck, Sharp & Dohme
- Research Laboratories, 1987. Pp. 420-22.
-
-