Atrial flutter occurs when a “reentrant” circuit is present, causing a repeated loop of electrical activity to depolarize the atrium at a rate of about 250 to 350 beats per minute; the atrial ...

Atrial flutter is similar to atrial fibrillation in that the rhythm originates in the atrium and causes a narrow complex tachycardia, which carries thromboembolic risk. Typical atrial flutter ...

Lakeway attorney David Wright, 72, had dizzy spells for years, but none of his doctors found the source. Last year, when he was jogging, he noticed his heart rate, which was usually in the 50s ...