UNLABELLED In the Multicenter Automatic Defibrillator Implantation Trial (MADIT) II, implantable cardioverter-defibrillator (ICD)-randomized patients underwent electrophysiologic testing. Both inducible and noninducible patients received an ICD. We correlated inducibility with the occurrence of subsequent ventricular tachycardia (VT) or ventricular fibrillation (VF). Intracardiac ICD electrogra...

Introduction Frequent premature ventricular depolarizations (VPDs) may lead to the development of dilated cardiomyopathy, which is reversible with catheter ablation. Closely coupled VPDs have also been shown to trigger polymorphic ventricular tachycardia. Twelve-lead electrocardiogram morphology and pace-mapping are useful clinical tools for localization of the site of origin of VPDs, particula...

Therapeutic hypothermia has been used for neuroprotection following cardiac arrest presenting with ventricular tachycardia or ventricular fibrillation regardless of underlying cause. Long QT syndrome is a cause for polymorphic ventricular tachycardia, and we know that therapeutic hypothermia increases the QT interval. We managed a 27-year-old woman, who was 10 weeks post-partum, who collapsed s...

OBJECTIVE To study various types of supraventricular arrhythmias in patients with Brugada Syndrome. METHODS Forty six patients with ECG of spontaneous type Brugada and with ventricular and/or supraventricular tachyarrhythmia, without structural heart diseases which were excluded by echocardiography, underwent 24 h-Holter recording, electrophysiological study and/or radiofrequency ablation. ...

Polymorphic ventricular tachycardia can be a detrimental consequence of coronary vasospasm [1]. The pathophysiology of vasospastic angina (VA) is poorly understood, although the disease has been linked to sympathetic hyperactivity [2–4]. We present a 52-year-old male smoker with ventricular fibrillation (VF) 2 years ago. Work-up revealed no signs of structural heart disease or obstructive coronary

Cardiac arrhythmias are a frequent and important complication of cardiac failure regardless of aetiology. It might be expected that those afflicted would be aware of their occurrence, but surprisingly, even salvoes of ventricular tachycardia often are not perceived by patients. It has required 24 hour ambulatory electrocardiographic recordings to disclose the true prevalence of arrhythmias. The...

background:cardiovascular effects of acute organophosphate (op) poisoning are common. this study was aimed to assess the cardiovascular effects of op poisoned patients in nepal. methods:this was a prospective hospital-based cross-sectional study of 115 acute op poisoned patients presenting in emergency department of a tertiary care teaching hospital of central nepal during november 2008 to octo...