Wolff Parkinson White Syndrome
National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Wolff Parkinson White Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
Wolff-Parkinson-White (WPW) syndrome is a rare congenital heart disorder involving irregularities in the electrical system of the heart. In individuals with WPW syndrome, an abnormal alternate electrical pathway (accessory pathway), exists between the atrium and the ventricle, resulting in abnormal heartbeat rhythms (arrhythmias) and faster than normal heartbeats (tachycardia).
The normal heart has four chambers. The two upper chambers are the atria and the two lower chambers are the ventricles. Within the right atrium of a normal heart is a natural pacemaker that initiates and controls the heartbeat. The electrical stimulus travels from the pacemaker (sinoatrial or SA node) to the ventricles along a specific pathway consisting of conducting tissue and known as the AV (atrioventricular) node. The extra electrical pathway in individuals with WPW syndrome bypasses the normal route and causes the ventricles to beat earlier than normal (preexcitation) and can allow electrical impulses to be conducted in both directions (i.e., from the atria to the ventricles and from the ventricles to the atria).
American Heart Association
7272 Greenville Avenue
Dallas, TX 75231
NIH/National Heart, Lung and Blood Institute
P.O. Box 30105
Bethesda, MD 20892-0105
Chiltern Court, Unit 10
Asheridge Rd Ind
Chesham, HP5 2PX
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
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This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".
The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.
It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report
This disease entry is based upon medical information available through the date at the end of the topic. 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.
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Last Updated: 4/6/2007
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