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 ...

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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 ...

The 12-lead ECG remains the gold standard of diagnosing AF. 8 The ECG will be positive for lack of a p-wave, an oscillatory baseline wave with varying amplitudes, irregular rhythm, and the classic ...

The rhythm is either sinus rhythm or not sinus rhythm. Sinus rhythm refers to the origination of the electrical activity coming from the sinus node — also known as the sinoatrial node, or SA node.

If you have ventricular tachycardia, your doctor may give you medicine to slow your heart rate down. You might also need a catheter ablation. In this procedure, a doctor threads a thin tube through an ...

Background: A 60-year-old male with obesity (body-mass index 43 kg/m 2) presented with recurrent symptomatic atrial fibrillation (AF), which he had had since age 41 years. The AF was refractory to ...

Carotid sinus massage is a major diagnostic test for carotid sinus hypersensitivity, which may be manifested as dizziness or syncope. Carotid sinus massage is also used in emergency settings to ...