I read with interest the article by David et al. regarding a case of recurrent tachycardia-induced cardiomyopathy secondary to typical atrial flutter. I have some concerns regarding the management of the recurrences of atrial flutter and tachycardiainduced cardiomyopathy in this case. The authors’ choice of treatment involved DC cardioversion of the atrial flutter that was successful in restori...

A 41-year-old man had chronic, recurrent, drug-resistant paroxysmal right atrial tachycardia. Electrophysiologic studies revealed features suggesting atrial reentrance, including induction and termination of tachycardia with rapid atrial pacing and atrial extrastimuli. Endocardial catheter mapping localized the origin of tachycardia to the right atrial appendage. Intraoperative epicardial mappi...

Proc (Bayl Univ Med Cent) 2012;25(2):159–160 A n obese (height, 62 inches; weight, 252 lb; body mass index, 46.2 kg/m2) 54-year-old woman with longstanding asthma and chronic cigarette smoking came to the hospital with an acute asthma attack manifested by dyspnea, wheezing, and chest tightness. Her electrocardiogram showed an irregular atrial tachycardia (114 P waves/minute) with multiple P-wav...

Supraventricular arrhythmias are relatively common, often persistent, and rarely life-threatening cardiac rhythm disturbances that arise from the sinus node, atrial tissue, or junctional sites between the atria and ventricles. The term "supraventricular arrhythmia" most often is used to refer to supraventricular tachycardias and atrial flutter. The term "supraventricular tachycardia" commonly r...

This report deals with a patient reflecting atrial parasystole and episodes of atrial tachycardia. The P' waves during tachycardia were identical to the parasystolic P' waves. Atrial parasystole was at times regular, as revealed by a precise mathematical relationship between the interectopic intervals, and on other occasions irregular. Irregularity was due to modulation, namely electrotonic inf...

Twenty-one patients with atrioventricular (AV) bypass tracts underwent electrophysiologic studies. The bypass tract was left-sided in 15 patients, septal in five and right-sided in one patient. Orthodromic AV-reciprocating tachycardia was induced in all 21 patients, with a mean tachycardia cycle length of 342 59 msec. The introduction of single stimuli in the high right atrium during tachycardi...

BACKGROUND Radio frequency catheter ablation is accepted therapy for patients with paroxysmal supraventricular tachycardia and has a low rate of complications. For patients with atrial arrhythmias, catheter ablation of the His bundle has been an option when drugs fail or produce untoward side effects. Although preventing rapid ventricular response, this procedure requires a permanent pacemaker ...

A 66-year-old woman with a 24-year history of paroxysmal supraventricular tachycardia underwent an electrophysiologic procedure. The baseline sinus cycle length, atrial-His (AH), and Hisventricular (HV) intervals were 8(X). 70, and 40 msec, respectively. Programmed stimulation with a single atrial extrastimulus did not demonstrate dual AV nodal physiology and did not result in the induction of ...

Plasma concentrations of immunoreactive atrial natriuretic polypeptide were raised in 22 of 23 patients with paroxysmal supraventricular tachycardia and in all seven patients with atrial flutter. Plasma concentrations of atrial natriuretic polypeptide rose soon after the onset of supraventricular tachycardia. A sample taken 30 minutes after reversion to sinus rhythm (pharmacological or non-phar...

was initially decided to induce atrial fibrillation as necessary with the use of a permanent radiofrequency-controlled atrial pacemaker. Several days after implantation of the pacemaker, however, rapid atrial pacing produced atrial tachycardia with atrioventricular block rather than atrial fibrillation. Despite this apparent failure, the ventricular rate has been adequately controlled by rapid ...