![]() ![]() Changes in the heart muscle (cardiomyopathy).Irritable tissue in the heart (due to genetic or acquired causes).Weakening of the heart muscle or low ejection fraction.Weakness or fatigue (feeling very tired).++Palpitations++: A feeling of skipped heartbeat or that your heart is “running away,” fluttering or doing "flip-flops.”.A doctor can find an irregular heartbeat during an examination by taking your pulse, listening to your heart or performing diagnostic tests. The heartbeat may be irregular and slow.Īn arrhythmia may be “silent” and not cause any symptoms. The level of the block or delay may occur in the AV node or HIS-Purkinje system. Heart block: A delay or complete block of the electrical impulse as it travels from the sinus node to the ventricles.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.Atrial tachycardia: A rapid heart rhythm that starts in the atria.AV nodal re-entrant tachycardia (AVNRT): A fast heart rhythm caused by the presence of more than one pathway through the atrioventricular (AV) node.This allows the impulses to travel around your heart very quickly, causing it to beat unusually fast (example: Wolff- Parkinson-White syndrome). The impulses travel through the extra pathways as well as the usual route. Accessory pathway tachycardias (bypass tract tachycardias): A fast heart rhythm caused by an extra, abnormal electrical pathway or connection between the atria and ventricles.This type of arrhythmia begins and ends suddenly. Paroxysmal supraventricular tachycardia (PSVT): A rapid but regular heart rhythm that comes from the atria.Types of supraventricular arrhythmias include: Supraventricular arrhythmias begin in the atria or the upper chambers of your heart. What are the types of supraventricular arrhythmias? Bradyarrhythmias: Slow heart rhythms that may be caused by disease in the heart’s conduction system, such as the sinoatrial (SA) node, atrioventricular (AV) node or HIS-Purkinje network.Ventricular arrhythmias: Arrhythmias that begin in the ventricles (the heart’s lower chambers).“Ventricular” refers to the lower chambers of the heart or ventricles. Supraventricular arrhythmias: Arrhythmias that begin in the atria (the heart’s upper chambers).AV Node Re-entrant Tachycardia What is an arrhythmia?Īn arrhythmia (also called dysrhythmia) is an irregular or abnormal heartbeat. ![]()
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