Ventricular arrhythmia (VA) is an abnormal heart rhythm that begins in the ventricles, the heart’s two lower chambers. The rhythm may be too fast or too uncoordinated for the heart to function ...

A new multicenter trial has used a new ablation technique for patients with ventricular tachycardia, an abnormally rapid heart rhythm that is a leading cause of sudden cardiac death worldwide. A first ...

SUDDEN death in persons with artificial pacemakers is a continuing and disturbing problem. Causes include pacemaker-catheter displacement, electric-component failure, broken wires and rising pacing ...

Scar tissue in the heart was associated with abnormal heart rhythms among healthy, long-time male endurance athletes age 50 or older, potentially increasing their risk of sudden cardiac ...

An important and unresolved issue is optimal application of ATP in different ICD patient populations. In general, secondary prevention patients have a greater frequency of spontaneous ventricular ...

Heart attacks trigger a cascade of reactions in the body, and certain immune cells may worsen the damage by disrupting heart ...

A team at Massachusetts General Hospital uncovered that an immune defense protein, Resistin-like molecule gamma, attacks ...

Depending on how the heart’s electrical activity appears on an EKG, a doctor may diagnose coarse or fine ventricular fibrillation (VF). Coarse VF appears as larger waves on an EKG compared with the ...

Dr. Naccarelli answers the question: 'What Is Flecainide, How Does It Work?' — -- Question: I have been placed on an antiarrhythmic drug called flecainide for my heart rhythm problem. How does it ...

Breathing in tiny particles of air pollution may trigger irregular heart rhythms in otherwise healthy teenagers and increase their risk of sudden cardiac death, a new study has found. The study, ...