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 ...

Supraventricular tachycardia is a term used to describe any heart rhythm that is greater than 100 beats per minute originating from above the AV node (the atrium). The term “SVT” can be confusing at ...

Pacing Clin Electrophysiol. 2005;28(12):1322-1346. The performance of SVT-VT discriminators is linked to boundaries between detection zones for ventricular arrhythmias. In Guidant ICDs, this link is ...

Ravi Ranjan, M.D., Ph.D., is the Section Chief of Cardiac Electrophysiology. His clinical interests include the ablation of complex cardiac arrhythmias such as atrial fibrillation, ventricular ...

Dr. Hugh Calkins answers the question: 'Atrial Fibrillation vs. Atrial Flutter?' — -- Question: My doctor told me I sometimes have atrial fibrillation and at other times have atrial flutter. What ...

A significant percentage of affected patients were observed to have dilated atria and left ventricular hypertrophy. Ingestion of polyethylene glycol (PEG)-based solutions for bowel preparation prior ...

In the ED, adenosine is used to terminate supraventricular tachycardias (SVTs). It is also used by cardiologists for pharmacologic stress testing. Paroxysmal SVT has a prevalence of around 2.25 per ...

When your electrical system is working normally, the two upper chambers of the heart (atria) contract and pump blood into the two lower chambers (ventricles) in a well-coordinated way. This results in ...