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    Cardioversion: Atrial Fibrillation

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    In atrial fibrillation, erratic electrical impulses in the upper chambers of the heart (atria) cause those chambers to fibrillate, or quiver. This results in an irregular and frequently rapid heart rate. The irregular pattern in the electrocardiogram (EKG, ECG) tracing shows these erratic impulses.

    ByHealthwise Staff
    Primary Medical ReviewerRakesh K. Pai, MD, FACC - Cardiology, Electrophysiology
    Specialist Medical ReviewerJohn M. Miller, MD, FACC - Cardiology, Electrophysiology

    Current as ofMarch 12, 2014

    WebMD Medical Reference from Healthwise

    Last Updated: 2/, 014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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