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Heart Rhythm Disorders Topic Guide Arrhythmias (Heart Rhythm Disorders): Arrhythmias or heart rhythm disorders are conditions that causes changes in the normal heartbeat. There are numerous types of arrhythmias, for example, supraventricular tachycardia, sinus sick syndrome, atrial fibrillation, atrial flutter, and ventricular fibrillation. Signs and symptoms of an arrhythmia may include: Chest pain or discomfort Shortness of breath Palpitations Racing heart sensation Treatment for arrhythmias depend upon the cause. Read the Heart Rhythm Disorders Main Article >> Complete Guide to Heart Rhythm Disorders: Must Read Articles Visuals - slideshows, pictures, images, and quizzes Medications and Vitamins Related Topics Heart Rhythm Disorders Main Article Must Read Articles: Anxiety Atrial Fibrillation Atrial Flutter Automated External Defibrillators (AED) Congestive Heart Failure Electrocardiogram (ECG) Fainting Palpitations Stroke Sudden Cardiac Arrest Supraventricular Tachycardia Featured: Sudden Cardiac Arrest Sudden cardiac arrest (SCA) usually causes death if it is not treated within minutes. Some of the causes of sudden cardiac death include ventricular fibrillation, medication or drug abuse/overdose, heart attack, physical stress, inherited disorders, and changes in the structure of the heart. Automatic external defibrillator (AED), if available is the best immediate treatment for sudden cardiac arrest. Expert Views and News Leadless Pacemaker for Heart Rhythm Disorders Common Heart Drug Questioned FDA Rejects New Use for Blood Thinner Xarelto Next Page >> Heart Rhythm Disorders Topic Guide - Visuals