Fifty-five year old lady presented with complaints of recurrent palpitations for last 5 years. She had already undergone 3 previous attempts at ablation at another institution; the details of the procedures were not available. Previous cardiac disease or cardiac surgery was absent. Presenting ECG was consistent with counterclock wise (CCW) atrial flutter (Negative flutter waves in II, III, aVF ...

OBJECTIVE To determine whether cardiac troponin T increases after electrical cardioversion in patients with atrial fibrillation or atrial flutter. DESIGN Serum creatine kinase (CK), creatine kinase-MB (CKMB), and cardiac troponin T were measured before, 24 hours, and 48 hours after cardioversion in 15 patients with atrial fibrillation or atrial flutter. RESULTS 12 of the 15 patients (80%) w...

rhythm with each early complex having a wide QRS. Although the wide QRS superficially suggests that this is ventricular bigeminy, the perfect right-bundle-branchblock pattern (RS in lead I, qRS in lead V6, rsR ́ in lead V1) suggests that the early complex is an aberrantly conducted supraventricular complex. The atrial rhythm is typical counterclockwise atrial flutter with negative P waves in lea...

BACKGROUND Single premature beats were introduced in the reentrant circuit during stable atrial flutter in the canine sterile pericarditis model to test the hypotheses that (1) despite the fact that the reentrant circuit is functionally determined, there is a fully excitable gap; (2) the excitable gap in the reentrant circuit is not uniform; and (3) inhomogeneities of conduction in the reentran...

This 12-lead electrocardiogram (ECG) is of a 69 year-old man with Parkinson’s disease. On initial inspection, the rhythm appears to be that of atrial flutter, with negatively directed flutter waves in the inferior leads (Fig. 1A, grey arrow), consistent with cavo-tricuspid isthmus dependent flutter. These waves present a cycle length of approximately 200 ms and are best visualized in leads I, I...

OBJECTIVES The purpose of this study was to define the incidence, mechanisms, and management, including catheter ablation, of supraventricular tachycardia (SVT) in a large series of patients after orthotopic heart transplantation (OHT). BACKGROUND Supraventricular arrhythmias are frequently encountered after OHT, but their characteristics in this population have not been well established. M...

This study is of a family with a syndrome of atrial fibrillation or flutter with advanced or complete atrioventricular (A-V) block, involving four members in two generations. Less serious arrhythmias were documented in another 15 members (three generations). Inheritance was by autosomal dominance with varying degrees of expression. An atrial biopsy was obtained in one of the members, a 40-year-...

This study is of a family with a syndrome of atrial fibrillation or flutter with advanced or complete atrioventricular (A-V) block, involving four members in two generations. Less serious arrhythmias were documented in another 15 members (three generations). Inheritance was by autosomal dominance with varying degrees of expression. An atrial biopsy was obtained in one of the members, a 40-year-...