![]() Sinus node dysfunction: Slow heart rhythms due to an abnormal SA node.When the QT interval is longer than normal, it increases the risk for “torsade de pointes,” a life-threatening form of ventricular tachycardia.Ī bradyarrhythmia is a slow heart rhythm that is usually caused by disease in the heart’s conduction system. The QT interval is the area on the ECG that represents the time it takes for the heart muscle to contract and then recover, or for the electrical impulse to fire and then recharge. Long QT: While this is not an arrhythmia, it can predispose someone to have one.This is a medical emergency that must be treated with cardiopulmonary resuscitation (CPR) and defibrillation (delivery of an energy shock to your heart muscle to restore a normal rhythm) as soon as possible. The ventricles quiver and can’t generate an effective contraction, which results in a lack of blood being delivered to your body. Ventricular fibrillation (V-fib): An erratic, disorganized firing of impulses from the ventricles.A cardiologist should evaluate this condition. V-tach can be serious, especially in people with heart disease, and may be associated with more symptoms than other types of arrhythmia. The rapid rhythm keeps the heart from adequately filling with blood, and less blood is able to pump through the body. Ventricular tachycardia (V-tach): A rapid heartbeat that begins in the ventricles.People who have several PVCs and/or symptoms associated with them should be evaluated by a cardiologist (heart doctor). They can be also be caused by heart disease or electrolyte imbalance. This type of arrhythmia is common and can be related to stress, too much caffeine or nicotine, or exercise. Most of the time, PVCs don’t cause any symptoms or require treatment. Premature ventricular contractions (PVCs): Early, extra heartbeats that start out in the ventricles.Types of ventricular arrhythmias include: What are the types of ventricular arrhythmias?Ī ventricular arrhythmia begins in the heart’s ventricles. Atrial flutter is usually more organized and regular than atrial fibrillation. Atrial flutter: An atrial arrhythmia caused by one or more rapid circuits in the atrium. ![]() Because the impulses are traveling through the atria in a disorderly fashion, there’s a loss of coordinated atrial contraction. This results in a disorganized rapid and irregular rhythm. This happens when many impulses begin and spread through the atria, competing for a chance to travel through the AV node. Atrial fibrillation: A very common irregular heart rhythm. ![]()
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