Illustration of the heart

An arrhythmia is a problem with the rate or rhythm of your heartbeat. It means that your heart beats too quickly, too slowly, or with an irregular pattern. When the heart beats faster than normal, it is called tachycardia. When the heart beats too slowly, it is called bradycardia. The most common type of arrhythmia is atrial fibrillation, which causes an irregular and fast heart beat.

Many factors can affect your heart's rhythm, such as having had a heart attack, smoking, congenital heart defects, and stress. Some substances or medicines may also cause arrhythmias.

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Results 1 - 10 of 1,296 for irregular heartbeat
  1. Arrhythmia (National Library of Medicine)  
    An arrhythmia is a problem with the rate or rhythm of your heartbeat. It means that your heart beats ... is called bradycardia. The most common type of arrhythmia is atrial fibrillation, which causes an irregular and ...
  2. ... How Safe Is Exercise for Those With Common Irregular Heartbeat? Atrial fibrillation strikes many older Americans, and study ... 000 people with atrial fibrillation -- a type of irregular heartbeat that affects many aging Americans and is tied ...
  3. Botox: An Rx for Irregular Heartbeat After Cardiac Surgery? Preliminary trial found the drug effective against potentially fatal atrial fibrillation To use the sharing features on ...
  4. ... COPD Raises Cardiac Death Risk for Those With Irregular Heartbeat But the lung condition not tied to raised ...
  5. ... and Simple Snoring VIDEO: If I Had - An Irregular Heartbeat and Was Diagnosed With Long QT Syndrome- Dr. ... to Home Page VIDEO: If I Had - An Irregular Heartbeat and Was Diagnosed With Long QT Syndrome- Dr. ...
  6. Heartbeat sensations; Irregular heartbeat; Palpitations; Heart pounding or racing ... the time. Sensations representing an abnormal heart rhythm ( arrhythmia ) may be more serious. The following conditions make ...
  7. Propafenone is used to treat arrhythmia (irregular heartbeat) and to maintain a normal heart rate. Propafenone is in a class of medications called antiarrhythmics. It works by acting on the ...
  8. ... used to prevent certain types of life-threatening irregular heartbeats. Flecainide is in a class of medications called ... is surgically placed under the skin to control irregular heartbeats) and if you have or have ever had ...
  9. Children and Arrhythmia (American Heart Association)  
    ... beat faster. During sleep it slows down. An irregular heartbeat is an arrhythmia . The most common irregularity occurs ... to ask questions about specific medicines or activities. Arrhythmia • Home • About Arrhythmia • Why Arrhythmia Matters • Understand Your ...
  10. Devices for Arrhythmia (American Heart Association)  
    ... Blood Pressure Tools & Resources Stroke More Devices for Arrhythmia Updated:Nov 18,2014 In a medical emergency, ... was last reviewed on 10/23/2014. Printable Arrhythmia Information Sheets What is Arrhythmia? (PDF) What is ...
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