1:1 Conduction of Atrial Flutter When a class IC antiarrhythmic drug is used for atrial flutter, an AV blocking agent must be used simultaneously to avoid a paradoxical increase in ventricular rates.

Atrial flutter is an organized regular rhythm that is generally characterized by an atrial rate of 280 to 300 beats per minute and that with 2:1 conduction in the atrioventricular node results in ...

The classic arrhythmias seen during digoxin toxicity include atrial tachycardia with a 2:1 conduction, bidirectional ventricular tachycardia and atrial fibrillation with a slow ventricular response.