Digoxin toxicity produce all of the changes in ECG except: (A) Inveed T waves, (B) Prolonged QT interval, (C) ST depression, (D) Prolonged PR interval
Answer is B. In digoxin toxicity, the finding of frequent premature ventricular beats (PVCs) is the most common and the earliest dysrhythmia. Sinus bradycardia is also very common. In addition, depressed conduction is a predominant feature of digoxin toxicity. Other ECG changes that suggest digoxin toxicity include bigeminal and trigeminal rhythms, ventricular bigeminy, and bidirectional ventricular tachycardia.[ Refer kDT 7/e p514