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 ...

A 47-year-old woman with obstructive hypertrophic cardiomyopathy (HCM) presented with severe chest pain with both atypical and exertional features. Her symptoms had initially improved with verapamil, ...

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

Medically reviewed by Rafle Fernandez, MD Key Takeaways Ventricular tachycardia is when the lower chamber of the heart beats ...

Exercise-induced ventricular ectopy predicts an increased risk of death in population-based cohorts. We sought to examine in a clinical cohort the prognostic importance of ventricular ectopy ...