Arrhythmias/Rhythm Disorders
Source: National Heart, Lung, and Blood Institute

Table of Contents

What is an arrhythmia?
Does having an arrhythmia mean that a person has heart disease?
What causes arrhythmias?
Are arrhythmias serious?
How common are arrhythmias?
What are the symptoms of an arrhythmia?
Arrhythmia Types
What happens in the heart during an arrhythmia?
What is a heart block?
What are the different types of arrhythmias?
How does the doctor know that I have an arrhythmia?
What tests can be done?
Tests for Detecting Arrhythmias
How are arrhythmias treated?
How can arrhythmias be prevented
Is research on arrhythmias being done?
Where can I find publications about heart disease?

What is an arrhythmia?

An arrhythmia is a change in the regular beat of the heart. The heart may seem to skip a beat or beat irregularly or very fast or very slowly.

Does having an arrhythmia mean that a person has heart disease?

No, not necessarily. Many arrhythmias occur in people who do not have underlying heart disease.

What causes arrhythmias?

Many times, there is no recognizable cause of an arrhythmia. Heart disease may cause arrhythmias. Other causes include: stress, caffeine, tobacco, alcohol, diet pills, and cough and cold medicines.

Are arrhythmias serious?

The vast majority of people with arr