Narrow QRS complexes occur regularly. This tracing suggests either atrial flutter or ventricular tachycardia. It is not atrial flutter, however. If it were, the QRS complexes occurring regularly would ...

This ECG is challenging. The rhythm starts as normal sinus rhythm with a right bundle branch block, then a wide-complex tachycardia develops in a left bundle branch block pattern. The important thing ...

Polymorphic ventricular tachycardia is an abnormal heart rhythm where the bottom chambers of your heart beat too quickly. People with severe cases may experience sudden cardiac arrest. Conditions that ...

Cardiac arrhythmias following myocardial infarction (MI) predict poor outcome. β-blockers are effective ventricular antiarrhythmics and angiotensin-converting-enzyme (ACE) inhibitors can prevent both ...

Ventricular tachycardia is a type of arrhythmia, or abnormal heart rhythm. Sometimes called VT or V-tach, it’s an unusually fast heartbeat that starts in the lower part of your heart called the ...