An arrhythmia is an irregular heart rhythm. An arrhythmia can occur with a normal heart rate or with fast or slow heart rates. Causes may include coronary artery disease, heart attack, heart surgery, blood imbalances, and more. There are many types of arrhythmias including atrial fibrillation and atrial flutter. Treatments include medications and lifestyle changes, cardioversion, pacemakers, ICDs, and surgery. Follow the links below to find WebMD's comprehensive coverage about how arrhythmia is caused, what it looks like, how to treat it, and much more.
Abnormal Heart Rhythms and Implantable Cardioverter Defibrillators (ICD)
Abnormal heart rhythms sometimes require the use of an ICD or implantable cardioverter defibrillator. WebMD explains how the device works.
What Is Cardiac Ablation for AFib?
Find out about the different types of this procedure that are used to treat atrial fibrillation. Get information on how they work to fix an irregular heartbeat and who should get ablation as a treatment.
Abnormal Heart Rhythms (Arrhythmias)
WebMD explains arrythmias, or abnormal heart rhythms, including causes, symptoms, treatment, and more.
Flutter, thump, bump: facts about tachycardia
Tachycardia is a common, treatable condition that causes rapid heartbeat. Learn what causes your heart to beat too fast and how doctors diagnose and treat it.
5 Heart Rate Myths Debunked
Myths and facts about heart rates, including what an erratic heart rate means and the link between your pulse and stress.
Medication to Control Your Heart's Rate and Rhythm
Different kinds of medication can treat the irregular heartbeat of AFib, by controlling the rate or the rhythm.
Atrial Fibrillation (AFib) Myths and Facts
Did you know? If you have AFib, you can drive, have sex, and even eat ice cream. Find out if what you think is true.
Slideshows & Images
A Holter monitor is a type of ambulatory electrocardiogram (EKG or ECG). Ambulatory means that you are able to walk. This device can record the electrical activity of your heart while you move around to do your usual activities. You might wear it for 24 to 72 hours. The monitor is a lightweight, battery-operated tape recorder. You can wear it on a strap over your shoulder. Or you can wear it around your waist. The monitor is connected by wires to small metal discs (electrodes) taped to your chest.
Implantable cardioverter-defibrillator (ICD)
Image of an implantable cardioverter defibrillator (ICD); A doctor places an implantable cardioverter-defibrillator (also called an ICD) in the chest. The ICD has one or two wires called leads that connect to the heart through a vein. The ICD checks the heartbeat for an abnormal rhythm. If the ICD senses an abnormal heart rhythm,it sends out either electrical pulses or a shock to fix it. ...
Slideshow: A Visual Guide to Atrial Fibrillation
See inside a heart during atrial fibrillation. Pictures show the causes, tests, and treatments for this common heart rhythm problem through illustrations and photos.
Slideshow: A Visual Guide to Heart Disease
WebMD provides a visual overview of heart disease, including symptoms to watch for, diagnostic tests, treatments, and prevention strategies.