Isolated cardiac sarcoidosis masquerading as right ventricular outflow tract ventricular tachycardia.

A 67-year-old man with coronary artery disease (CAD) and left anterior descending artery (LAD) stent presented with symptomatic monomorphic ventricular tachycardia (VT) at a rate of 190 bpm requiring cardioversion. ECG showed left bundle branch block pattern and inferior axis, suggestive of a right ventricular outflow tract (RVOT) focus rather than left ventricular scar due to LAD territory myocardial infarction (MI). Echocardiography showed normal wall motion.

T-wave inversion and diastolic dysfunction in patients with electrocardiographic left ventricular hypertrophy.

Objectives: The aim of this study was to investigate if T-wave inversion (TWI) in the settings of electrocardiogram (ECG)-left ventricular hypertrophy (LVH) is associated with advanced diastolic dysfunction (DD) in subjects with preserved ejection fraction (EF).

Background: Animal studies suggested that an abnormal transmural repolarization sequence from endocardium to epicardium may contribute to DD. However, little is known about abnormal repolarization sequence and DD in humans.

An uncommon twist on Twiddler's syndrome.

Twiddler's syndrome is a rare cause of pacemaker dysfunction characterized by coiling of the lead around the rotated generator. It is even less common for implantable cardioverter-defibrillator (ICD) devices. We describe a 44-year-old woman who underwent successful implantation of an ICD and three months later presented with left arm twitching.

Selection of drugs in pursuit of a rhythm control strategy.

A rhythm control strategy based on a combination of antiarrhythmic drugs and electrical cardioversion(s) has emerged as a viable alternative for treatment of atrial fibrillation, particularly when the arrhythmia is associated with symptoms, which may be poorly tolerated, or with congestive heart failure. Several classes of antiarrhythmic drugs are available to restore sinus rhythm by chemical cardioversion and to help maintain it once it has been achieved. In our discussion, we will detail aspects of their efficacy and safety, and attempt to outline a pragmatic clinical approach to their use.