1.1 Heart Failure in Adults. Digoxin is indicated for the treatment of mild to moderate heart failure in adults. Digoxin increases left ventricular ejection fraction and imporves heart failure symptoms, as evidenced by improves heart failure symptoms, as evidenced by improved exercise capacity and decreased heart failure-related. Digoxin ECG changes: arrhythmias, conduction defects and waveform changes. Digoxin may be used in patients with heart failure, atrial fibrillation, atrial flutter and in selected cases of paroxysmal supraventricular tachycardia. “Paroxysmal” atrial tachycardia with block and frequent PVCs. This is a classic ECG of digoxin toxicity showing atrial tachycardia (P waves at 150 bpm), high-grade 2nd degree AV block (A:V ratio of 4:1) with frequent premature ventricular complexes. Ventricular tachycardia (VT): types, causes, ECG features and management. This chapter deals with ventricular tachycardia from a clinical perspective, with emphasis on ECG diagnosis, definitions, management and clinical characteristics. What should be done? First, what kind of VT is this? Polymorphic VT. PMVT is defined as a wide complex ventricular rhythm at rate over 100 with rapidly changing QRS axis and/or morphology. Ventricular arrhythmia (VA) may be an isolated and completely benign finding in children, a marker of serious systemic disease or myopathy, or a mechanism for syncope and sudden cardiac death (SCD). Isolated premature ventricular contractions (PVCs) are reasonably common. Sustained ventricular tachycardia(VT) may arise in the conducting system below the bundle of His or in the ventricular myocardium or both lasting 30s or more at rate of 100 beats/min. or more. I am sorry, but this site is only supported in an strict HTML compliant browser. The site may continue to function, but may not display properly. Ventricular tachycardia (VT) or ventricular fibrillation (VF) is responsible for most of the sudden cardiac deaths in the United States, at an estimated rate of approximately 300,000 deaths per year. - ECG type I sinoatrial block - ECG type II sinoatrial block - ECG atrial tachycardia with block - ECG digoxin toxicity in AF 1 - ECG digoxin toxicity in AF 2.