What Are Some Causes of Ventricular Arrhythmias?


Quick Answer

Underlying heart disease, scar tissue, and trauma, including electrocution, are conditions that can sometimes cause ventricular arrhythmias, according to Mayo Clinic. Tobacco, alcohol, caffeine and street drugs can also lead to arrhythmias, notes the American Heart Association.

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Full Answer

A ventricular arrhythmia occurs when the electrical impulses of the heart do not fire correctly, causing the lower chambers of the heart, which are the ventricles, to beat irregularly, notes Mayo Clinic. Ventricular arrythmias can be classified as ventricular tachycardia or ventricular fibrillation. During Ventricular tachycardia, the ventricles beat too fast. However, during ventricular tachycardia, the ventricles simply quiver instead of producing cardiac output.

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