RHYTHMS AND ABNORMAL
ELECTROCARDIOGRAMS
Alcohol is a major cause of atrial fibrillation, which is the most common abnormal heart rhythm encountered in medical practice. This serious arrhythmia requires patients to be treated with oral anticoagulants to prevent stroke. Moderate alcohol consumption can cause atrial fibrillation. (See the chapter Atrial Fibrillation). In some patients atrial or ventricular premature beats and palpitations may occur. Alcohol consumption for several years can cause the electrocardiogram to show abnormal findings such as mild deformities of the ST segment and T waves.

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