Case report A 48-year-old man with nonischemic dilated cardiomyopathy, left ventricular ejection fraction r35% status post dual-chamber ICD (Boston Scientific Energen, model E142) since September 2012, history of ventricular tachycardia with antitachycardia pacing (ATP) therapy, paroxysmal atrial fibrillation, and atrial tachycardia on beta-blocker therapy was seen in clinic following an ICD sh...

Atrial tachyarrhythmias occur in 4%–14% of patients presenting with pulmonary embolism (PE), sinus tachycardia being the most common, followed by atrial tachycardia (AT), atrial fibrillation, and atrial flutter, in that order. Although AT has been described with PE, its exclusive occurrence with changes in body posture after PE has not been previously reported. In fact, atrial arrhythmia occurr...

When Paul Wood spoke about this to the British Cardiac Society in 1961, we were impressed by the originality of his work on a subject that so many had noticed but failed to investigate. A few months before his death in July 1962, when I asked him if his paper was ready for the journal, he said that he had not yet been able to get all the evidence he hoped for to establish the full explanation. ...

BACKGROUND Information on comparative outcome between radiofrequency catheter ablation (RFA) and antiarrhythmic drugs (AADs) >1 year after randomization is important for clinical decision-making. METHODS AND RESULTS A total of 198 patients (age, 56 ± 10 years) with paroxysmal atrial fibrillation were randomly assigned to RFA (99 patients) or to AADs (99 patients). We evaluated efficacy of RFA...

Background—Information on comparative outcome between radiofrequency catheter ablation (RFA) and antiarrhythmic drugs (AADs) 1 year after randomization is important for clinical decision-making. Methods and Results—A total of 198 patients (age, 56 10 years) with paroxysmal atrial fibrillation were randomly assigned to RFA (99 patients) or to AADs (99 patients). We evaluated efficacy of RFA or A...

A 29-year-old woman underwent an electrophysiologic procedure because of a 10-year history of recurrent episodes of paroxysmal supraventricular tachycardia. The baseline cycle length, atrial-His (AH), and His-ventricular (HV) intervals were 550, 50, and 45 msec, respectively. The AV block cycle length was 270 msec. With programmed atrial stimulation, there was no evidence of dual AV nodal pathw...

A 45-year-old woman underwent an electrophysiology procedure because of a 20-year history of recunent episodes of paroxysmal tachycardia. The baseline sinus cycle length, atrial-His. and His-ventricular intervals were 700, 60, and 45 msec, respectively, and the QRS duration was 80 msec. Ventricular pacing at a cycle length of 300 msec induced a tachycardia that had a cycle length of 320 msec an...

A simplified predictor of episodes of paroxysmal atrial fibrillation (PAF) is presented. Over a thirty minute monitoring time, the number of premature atrial complexes (PAC) without normal sinus node reset is counted. When the number of such PACs changes by more than 2 over the monitoring period, a PAF prediction is made. The PAC test is supplemented with a paroxysmal atrial tachycardia (PAT) t...