Heart Block -- Child
(Atrioventricular [AV] Block—Child)
- First-degree heart block—mildest form of heart block. Electrical signals reach all parts of the heart but move more slowly than normal. There are usually no symptoms, and heartbeat is normal.
- Second-degree heart block—some of the electrical signals are not reaching the ventricles. This means that sometimes the ventricles do not pump when they should.
- Third-degree, or complete, heart block—most serious type of heart block. No electrical signals are able to reach the ventricles. Cells in the ventricles act as a back up and create their own electrical signals. This allows the ventricles to keep pumping, but it is slower and out of rhythm with the rest of the heart. .
|Anatomy of the Heart|
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- Previous heart problems like heart failure or heart attack
- Heart valve problems
- Certain medications
- Exposure to toxic substances
- Chest pain
- Shortness of breath
- Rapid or slow heart beat
- Weakness or fatigue
- Trouble keeping up with other children when playing
- Needing to take resting breaks from playing
CardioSource—American College of Cardiology http://www.cardiosource.org
Heart Rhythm Society http://www.hrsonline.org
Canadian Cardiovascular Society http://www.ccs.ca
Heart and Stroke Foundation of Canada http://www.heartandstroke.com
First-degree AV nodal block. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated June 14, 2013. Accessed November 3, 2014.
Heart block. Heart Rhythm Society website. Available at: http://www.hrsonline.org/Patient-Resources/Heart-Diseases-Disorders/Heart-Block. Accessed November 3, 2014.
Second degree atrioventricular nodal block (non-Wenckebach). EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated April 18, 2013. Accessed November 3, 2014.
Third degree atrioventricular nodal block. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated January 21, 2011. Accessed November 3, 2014.
University of California San Francisco. Heart block. UCSF Benioff Childrens’ Hospital website. Available at: http://www.ucsfchildrenshospital.org/conditions/heart%5Fblock/. Accessed November 3, 2014.
What is heart block? National Heart, Lung and Blood Institute website. Available at: http://www.nhlbi.nih.gov/health/health-topics/topics/hb/. Updated July 9, 2012. Accessed November 3, 2014.
- Reviewer: Kari Kassir, MD
- Review Date: 12/2014 -
- Update Date: 12/20/2014 -
This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.
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