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 ...

NF was a 24-year-old gravida 5 Para 1031 African-American woman presented for a prenatal visit at 38 weeks of gestation. As part of her visit, the fetal heart rate was auscultated and found to be ...

Antiarrhythmic medications are, as the name suggests, a group of medications used to treat cardiac arrhythmias, which are any abnormalities in the heart’s rate or rhythm. Given the many types of ...

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 ...

Dr. Timm Dickfeld answers the question: 'What Is Supraventricular Tachycardia?' — -- Question: What does SVT (supraventricular tachycardia) mean, and is it similar to atrial fibrillation? Answer ...

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 ...

This Journal feature begins with a case vignette highlighting a common clinical problem. Evidence supporting various strategies is then presented, followed by a review of formal guidelines, when they ...