Atrial flutter is an abnormal cardiac rhythm characterized by rapid, regular atrial depolarizations at a characteristic rate of approximately 300 beats/min and a regular ventricular rate of about 150 beats/min in patients not taking atrioventricular (AV) nodal blockers. It can lead to symptoms of palpitations, shortness of breath, fatigue, or lightheadedness, as well as an increased risk of atrial thrombus formation that may cause cerebral and/or systemic embolization.
Atrial flutter occurs in many of the same situations as atrial fibrillation, which is much more common. Atrial flutter may be a stable rhythm or a bridge arrhythmia between sinus rhythm and atrial fibrillation. It may also be associated with a variety of other supraventricular arrhythmias. In atrial flutter, your heart's upper chambers (atria) beat too quickly. This causes the heart to beat in a fast, regular rhythm. Atrial flutter is a type of heart rhythm disorder (arrhythmia) caused by problems in your heart's electrical system. Atrial flutter is similar to atrial fibrillation, a common heart rhythm disorder.
A cross-sectional study compared 509 men aged 65–90 years who participated in a long-distance cross-country ski race with 1768 men aged 65–87 years from the general popu-lation.Light and moderate leisure-time physical activity during the last 12 months reduced the risk with 3.7 and 4.3 pp, respec-tively, but the RDs were not statistically significant.This study suggests that elderly men with a history of long-term endurance sport practice have an increased risk of AF compared with elderly men in the general population.