After years of stress tests and EKGs that yielded no results, Andrew Kohlenberg says he feels validated and relieved.

Atrial tachycardia and other ectopic atrial rhythms occur when a site outside of the sinus node, but within the atria, creates action potentials faster than the sinus node. This ectopic focus ...

Ventricular tachycardia refers to a wide QRS complex heart rhythm — that is, a QRS duration beyond 120 milliseconds — originating in the ventricles at a rate of greater than 100 beats per minute.

Ventricular tachycardia is an abnormally fast heart beat (with three or more consecutive heart beats at least 100 beats per minute) that originates from one of the ventricles in the heart.

The most common mechanism of inappropriate detection in these patients was double counting, which occurred during sinus rhythm, supraventricular tachycardia and nonsustained VT. Double counting ...

which is also known as tachycardia-bradycardia syndrome. When antiarrhythmic drugs (AADs) are administered for rhythm or ventricular rate control in this subset of AF patients, a permanent ...