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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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Results 1 - 10 of 1,244 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. ... Learn More Exercise may protect older women from irregular heartbeat American Heart Association Rapid Access Journal Report August ... reduce their risk of developing a life-threatening irregular heartbeat by doing more physical activity. Despite earlier research ...
  3. ... JavaScript. Even Moderate Drinking Might Raise Odds for Irregular Heartbeat But the finding held true for wine and ... their odds for a potentially dangerous form of irregular heartbeat, a new study suggests. The study did not ...
  4. ... page, please enable JavaScript. Exercise May Guard Against Irregular Heartbeat in Older Women Study found it lowered risk ... avoid a condition that causes a life-threatening irregular heartbeat, a new study shows. Physically active postmenopausal women ...
  5. ... features on this page, please enable JavaScript. Common Irregular Heartbeat May Pose Risks for Surgery Patients People with ... 2014 (HealthDay News) -- Surgery patients who have the irregular heartbeat known as atrial fibrillation may be at heightened ...
  6. ... JavaScript. Pacemakers Common for Those With Dementia and Irregular Heartbeats Study couldn't explain why more dementia patients ... 2014) Monday, July 28, 2014 Related MedlinePlus Pages Arrhythmia Dementia Pacemakers and Implantable Defibrillators MONDAY, July 28, ...
  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 ...
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