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When does atrial flutter occur?

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Atrial flutter occurs when an abnormal conduction circuit develops inside the right atrium, allowing the atria to beat excessively fast, about 250-300 beats per minute.

These rapid contractions are slowed when they reach the atrioventricular (AV) node, but are still too fast (typically about 150 beats per minute, or every other atrial beat getting through the AV node to the ventricles).

This type of rhythm is called tachycardia. Because atrial flutter comes from the atria, it is called a supraventricular (above the ventricles) tachycardia.

From: Atrial Flutter WebMD Medical Reference

Author: Noel G Boyle, MB, BCh, MD, PhD, Co-Director of Cardiac Electrophysiology, Assistant Professor, Department of Internal Medicine, Division of Cardiology, University of California at Los Angeles School of Medicine. Coauthor(s): Theodore A Spevack, DO, Director, Chair, Program Director, Clinical Associate Professor, Department of Emergency Medicine, St Barnabas Hospital, New York College of Osteopathic Medicine; Kathryn L Hale, MS, PA-C, Medical Writer, eMedicine.com, Inc. Editors: Alan D Forker, MD, Program Director of Cardiovascular Fellowship, Professor of Medicine, Department of Internal Medicine, University of Missouri at Kansas City School of Medicine; Mary L Windle, Pharm D, Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Pharmacy Editor, eMedicine.com, Inc; Anthony Anker, MD, FAAEM, Attending Physician, Emergency Department, Mary Washington Hospital, Fredericksburg, VA.  




Atrial Flutter on eMedicineHealth.

Reviewed by James Beckerman on May 14, 2018

Author: Noel G Boyle, MB, BCh, MD, PhD, Co-Director of Cardiac Electrophysiology, Assistant Professor, Department of Internal Medicine, Division of Cardiology, University of California at Los Angeles School of Medicine. Coauthor(s): Theodore A Spevack, DO, Director, Chair, Program Director, Clinical Associate Professor, Department of Emergency Medicine, St Barnabas Hospital, New York College of Osteopathic Medicine; Kathryn L Hale, MS, PA-C, Medical Writer, eMedicine.com, Inc. Editors: Alan D Forker, MD, Program Director of Cardiovascular Fellowship, Professor of Medicine, Department of Internal Medicine, University of Missouri at Kansas City School of Medicine; Mary L Windle, Pharm D, Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Pharmacy Editor, eMedicine.com, Inc; Anthony Anker, MD, FAAEM, Attending Physician, Emergency Department, Mary Washington Hospital, Fredericksburg, VA.  




Atrial Flutter on eMedicineHealth.

Reviewed by James Beckerman on May 14, 2018

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