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Atrial flutter ablation success rate11/21/2023 ![]() ![]() Atrial FibrillationĪtrial fibrillation (AF) is a form of arrhythmia, or irregular heartbeat, in which the atria (the two small upper chambers of the heart) quiver instead of beating effectively. Ventricular tachycardia (starting in the ventricles)īradycardia refers to a slow heart rhythm, caused by a failure of the heart signals to fire as they should.Supraventricular tachycardia (starting above the ventricles).Atrial tachycardia (starting in the atria).There are three major types of tachycardia: Tachycardia is defined by a heart rate over 100 beats per minute. The two major types of heart arrhythmia are tachycardia (fast arrhythmia) and bradycardia (slow arrhythmia). Atrial fibrillation (AF) is a form of arrhythmia, or irregular heartbeat, in which the atria (the two small upper chambers of the heart) quiver instead of beating effectively. A heart block (delay in the normal flow of electrical impulses that cause the heart to beat) may be present.Īny of these may cause the heart to skip a beat, beat too fast, or beat too slow.The sinus node may develop an abnormal rate or rhythm.The heartbeat may begin in a part of the heart other than the sinus node.An arrhythmia may happen for different reasons: ![]() There are several types of arrhythmias, named by the chambers of the heart in which they occur (atria or ventricles) and by what effect they have on the heart's rhythm. An arrhythmia is an abnormal heart rhythm. ![]()
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