The effect of surgical ablation of ablation of atrioventricular accessory pathways on the incidence of atrial fibrillation in patients with Wolff-Parkinson-White syndrome was examined and the results of preoperative electrophysiologic testing were studied to determine factors predictive of outcome. Among 50 consecutive surgical cases, 19 patients were identified with a past history of at least ...

Radiofrequency ablation has been shown to be a safe and effective treatment strategy for the management of symptomatic patients with Wolff-Parkinson-White syndrome. It is supported by a success rate of 95% and a recurrence rate of less than 5%. However, ablation of accessory pathways can be challenging at times. The causes for failure can be grouped into three categories - unusual location of t...

Cryoablation was applied to the treatment of 15 refractory tachyarrhythmias in 12 patients, Wolff-Parkinson-White atrioventricular reentrant tachycardia (WPW) in five patients, paroxysmal atrial fibrillation (PAF) in five patients, chronic atrial fibrillation (CAF) in one patient, paroxysmal atrial tachycardia (PAT) in two patients and paroxysmal ventricular tachycardia (PVT) in two patients. A...

recurrent paroxysmal tachycardia was admitted to hospital because of chest pain. The electrocardiogram (ECG) on admission (Figure 1A) showed signs suggestive of an antero septal accessory pathway, as well as ST segment elevation in leads V1 through V4, aVL and aVR, with elevated levels of cardiac enzymes. This was consistent with a diagnosis of Wolff–Parkinson–White syndrome with acute myocardi...

A 34 year-old male patient presented with recurrent attack of palpitation and chest pain due to Wolf Parkinson White syndrome (WPWS). Two dimensional echocardiography demonstrated features of Ebstein's anomaly along with biventricular non compaction. Color flow Doppler studies confirmed the presence of blood flow within the trabeculations. Biventricular myocardial non-compaction associated with...

Introduction Patients with Wolff-Parkinson-White syndrome are generally evaluated for symptomatic supraventricular tachycardia (SVT). Not infrequently, these patients are also at risk of wide complex tachycardia. Although overt pre-excitation in sinus rhythm is most often present in patients with WolffParkinson-White syndrome, the absence of a delta wave on the resting electrocardiogram (ECG) d...

Forty-nine patients with Wolff-Parkinson-White syndrome, ages 7 weeks to 51 years, were studied with isopotential body surface maps during normal sinus rhythm, atrial pacing or induced atrial fibrillation. The location of the accessory pathway was determined by multicather electrophysiologic study or surgical ablation of the accessory pathway. When fusion was minimized and ventricular activatio...

BACKGROUND Noninvasive techniques for the localization of the accessory pathways (APs) might help guide mapping procedures and ablation techniques. We sought to examine the diagnostic accuracy of strain imaging for the localization of the APs in Wolff-Parkinson-White syndrome. METHODS We prospectively studied 25 patients (mean age = 32 ± 17 years, 58.3% men) with evidence of pre-excitation on...

34. Birkhead JS, Vaughan Williams EM: Dual effects of disopyramide on atrial and atrioventricular conduction and refractory periods. Br Heart J 39: 657, 1977 35. Desai JM, Scheinman M. Peters RW. O'Young J: Electrophysiological effects of disopyramide in patients with bundle branch block. Circulation 59: 215, 1979 36. LaBarre A, Strauss HC, Scheinman MM, Evans GT. Bashore T, Tiedeman JS, Wallac...

This paper reviews the anatomical substrates responsible for the induction and maintenance of supraventricular tachycardia and discusses the ECG findings associated with these tachycardias. The normal anatomy of the supraventricular conducting system, particularly within the atria, is complex with conduction proceeding along preferential pathway, which are in turn determined in part by the anis...