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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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Illustration of the heart
Results 1 - 10 of 1,245 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. ... From Heart Disease Down, Up for Blood Pressure, Irregular Heartbeat Obesity and aging population may be contributing factors, ... but deaths related to high blood pressure and irregular heartbeats are on the rise, a new government study ...
  3. ... JavaScript. Fish Oil Supplements Have Little Effect on Irregular Heartbeat: Study Atrial fibrillation increases the risk for stroke, ... prevent the return of a common type of irregular heartbeat known as atrial fibrillation, Canadian researchers report. In ...
  4. ... sharing features on this page, please enable JavaScript. Irregular Heartbeat Doubles Risk for 'Silent Strokes,' Review Suggests Finding ...
  5. ... Device May Cut Stroke Risk in Those With Irregular Heartbeat: Study Mesh implant keeps clots that can form ...
  6. ... 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. ...
  7. 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 ...
  8. 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 ...
  9. ... 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 ...
  10. Common Tests for Arrhythmia (American Heart Association)  
    Common Tests for Arrhythmia Updated:Nov 18,2014 Several tests can help your doctor diagnose an arrhythmia ( View an animation of arrhythmia ). Identifying, ... the heart and its rhythm. Common Tests for Arrhythmia Electrocardiography (ECG or EKG) An arrhythmia is considered ...
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