Atrial fibrillation with slow ventricular rate, ventricular bigeminy, bidirectional ventricular ectopy

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Atrial fibrillation with slow ventricular rate, ventricular bigeminy and bidirectional ventricular ectopy. This combination can occur in digoxin toxicity. Ventricular ectopic bigeminy is a feature which can be seen in digoxin toxicity. Bidirectional ventricular tachycardia is another characteristic arrhythmia of digoxin toxicity. Other conditions in which bidirectional ventricular tachycardia can occur are catecholaminergic polymorphic ventricular tachycardia and Andersen-Tawil syndrome.

Atrial fibrillation with fast ventricular rate and  Mobitz type II AV block are two features which are never seen in digitoxicity.