Atrial flutter with varying A-V conduction ( and ) Specialty. Cardiology. Atrial flutter (AFL) is a common abnormal heart rhythm that starts in the atrial chambers of the heart. When it first occurs, it is usually associated with a fast heart rate and is classified as a type of supraventricular tachycardia.‎Classification · ‎Signs and symptoms · ‎Pathophysiology · ‎Diagnosis. After atrial fibrillation, atrial flutter is the most important and most common atrial tachyarrhythmia. Although it was first described 80 years ago, techniques for its. Atrial flutter is a cardiac arrhythmia characterized by atrial rates of beats/min and some degree of atrioventricular (AV) node conduction.


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Atrial flutter: common and main atypical forms

This rhythm is commonly flutter atrial with atrial fibrillation, into which it may degenerate. Atrial fibrillation may also convert to atrial flutter. If the rhythm persists despite treatment of the underlying cause or in the absence of a reversible cause, electrical cardioversion is used to terminate flutter atrial arrhythmia.

If electrical cardioversion is unavailable or not acceptable flutter atrial the patient, pharmacological cardioversion may be attempted. Diagnosis is by ECG. Treatment involves rate control with drugs, prevention of flutter atrial with anticoagulants, and often conversion to sinus rhythm with drugs, cardioversion, or atrial flutter substrate ablation.

See also Overview of Arrhythmias. Atrial flutter is much less common than atrial fibrillationbut its causes and hemodynamic consequences are similar.


Many patients with atrial flutter also have periods of atrial fibrillation. Typical atrial flutter is due to a large reentrant circuit involving most of the right atrium. Because the atrioventricular AV node cannot usually conduct at this rate, typically half of the impulses get through 2: Sometimes the block flutter atrial from moment flutter atrial moment, causing an irregular ventricular rhythm.

Atrial Flutter - Cardiovascular Disorders - MSD Manual Professional Edition

Type I[ edit ] Type I atrial flutter, counterclockwise rotation with 3: Atrial flutter with a two to one block. However, this rate may be slowed by antiarrhythmic agents. The reentrant loop circles flutter atrial right atrium, passing through the cavo-tricuspid isthmus — a body of fibrous tissue in the lower atrium between the inferior vena cavaand the tricuspid valve.

Left atrial flutter is considered flutter atrial and is common after incomplete left atrial ablation procedures. Signs flutter atrial symptoms[ edit ] While atrial flutter can sometimes go unnoticed, its onset is often marked by characteristic sensations of the heart feeling like it is beating too fast or hard.


Such sensations usually last until the episode resolves, flutter atrial until the heart rate is controlled. Atrial flutter is usually flutter atrial tolerated initially a high heart rate is for most people just a normal response to exercisehowever, people with other underlying heart disease such as coronary artery disease or poor exercise tolerance may rapidly develop symptoms, such as shortness of breathchest pain, lightheadedness or dizziness, nausea and, in some patients, nervousness and feelings of impending doom.

Atrial flutter - Symptoms, diagnosis and treatment | BMJ Best Practice

Prolonged atrial flutter with fast flutter atrial rates may lead to decompensation with loss of normal heart function heart failure.

Complications[ edit ] Although often regarded as a relatively benign heart rhythm problem, atrial flutter shares the same complications as the related condition atrial fibrillation. We describe common atrial flutter as well as the main atypical forms, with a focus on circuits and main electrocardiographic patterns with relevant notes on role of eletrophysiological studies and ablation.

In patients with chronic obstructive pulmonary disease with concomitant bronchodilators especially, controlling the ventricular rate could be challenging with an increased risk of 1: Loss of atrioventricular synchronisation and physiological rate response to activity can also decrease functional class in patients with ventricular dysfunction.

We present a brief report describing common atrial flutter as well as the main atypical forms, with a focus on description of their circuits, and main electrocardiographic patterns.

It can also be defined flutter atrial a macroreentrant tachycardia confined to the right atrium.

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