Gatifloxacin induced torsades de pointes.

The authors present an unusual case of torsades de pointes in an elderly woman treated with intravenous gatifloxacin antibiotic therapy.

Clinical significance of variability of ventricular late potentials detected before discharge in patients after myocardial infarction.

Background: Signal-averaged electrocardiography (SAECG) in patients after myocardial infarction (MI) is widely used to identify patients at risk for ventricular tachycardia (VT) and sudden cardiac death (SCD). It is believed that ventricular late potentials when detected after day 5 after MI are relatively stable and carry the most significant relation to subsequent arrhythmic events. This study sought to determine if ventricular late potentials in patients after MI exhibit variability when recordings were made 10 to 12 hours apart on day 7 and to assess the clinical significance of this variability.

An unusual case of multiple right atrial thrombi in a patient with a dual-chamber pacemaker--a case report.

The authors present an unusual case of multiple large atrial thrombi attached to permanent pacemaker leads identified by transesophageal echocardiography. Pathogenesis, clinical implications, and therapeutic options of pacemaker thrombi are discussed.