Arrhythmias and Atherosclerosis
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An irregular heartbeat is an arrhythmia (also called dysrhythmia). Heart rates can also be irregular. A normal heart rate is 50 to 100 beats per minute. Arrhythmias and abnormal heart rates don't necessarily occur together. Arrhythmias can occur with a normal heart rate, or with heart rates that are slow (called bradyarrhythmias -- less than 50 beats per minute). Arrhythmias can also occur with rapid heart rates (called tachyarrhythmias -- faster than 100 beats per minute). In the United States, more than 850,000 people are hospitalized for an arrhythmia each year.

What causes an arrhythmia?
Arrhythmias may be caused by many different factors, including:
-- Coronary artery disease.
-- Electrolyte imbalances in your blood (such as sodium or potassium).
-- Changes in your heart muscle.
-- Injury from a heart attack.
-- Healing process after heart surgery.
-- Irregular heart rhythms can also occur in "normal, healthy" hearts.

What Are the Signs and Symptoms of an Arrhythmia?
Many arrhythmias cause no signs or symptoms. When signs or symptoms are present, the most common ones are:
-- Palpitations (feelings that your heart is skipping a beat, fluttering, or beating too hard or fast)
-- A slow heartbeat
-- An irregular heartbeat
More serious signs and symptoms include:
-- Anxiety
-- Weakness, dizziness, and light-headedness
-- Fainting or nearly fainting
-- Sweating
-- Shortness of breath
-- Chest pain

Diseases Related
Diseases, Symptoms,  tcm, []

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