Pacemakers and Defibrillators Pacemakers and Defibrillators: Procedure and FAQS: Arrhythmia is the improper beating of the heart. It is a disorder of your heart rate or rhythm that occurs when your heart beats too fast, too slowly, or irregularly. Arrhythmias usually occur due to problems in the electrical system of your heart. Arrhythmia can be...Read More