Antidromic tachycardia utilizing decremental, latent accessory atrioventricular fibers: Differentiation from adenosine-sensitive ventricular tachycardia

Diagnosis of Ventricular Tachycardia Electrocardiography

Les signes clectrocardiographiques classiques nc sont pas toujours suMisants pour ·le diagnostic de la tachycardie ventriculaire. Nous avons insiste d'une part sur !'importance diagnostique des complex de ca· ptures et d'auters part sur l'import.anre des procedcs nouveux Tels :  1- Enrcgishemcnt du potentiel du faisreau de  2- Stimulation references endocavitaire.

Adenosine-sensitive ventricular tachycardia from the anterobasal left ventricle.

OBJECTIVES This study demonstrates that exercise-provocable tachycardia resembling right ventricular outflow tract tachycardia may originate from the anterobasal left ventricle. BACKGROUND Reentry is the operative mechanism of idiopathic left ventricular tachycardia, with a QRS complex of right bundle branch block and superior axis that is responsive to verapamil but not adenosine. Whether so...

Entrainment for Distinguishing Atypical Atrioventricular Node Reentrant Tachycardia From Atrioventricular Reentrant Tachycardia Over Septal Accessory Pathways With Long-RP Tachycardia

Background—The response to right ventricular (RV) entrainment is useful to distinguish atypical AV node reentrant tachycardia from AV reentrant tachycardia using a septal accessory pathway. Whether entrainment can differentiate between AV node reentrant tachycardia and AV reentrant tachycardia in patients with long-RP tachycardia has not been systematically validated. Methods and Results—Twenty...

Physiological substrate for antidromic reciprocating tachycardia. Prerequisite characteristics of the accessory pathway and atrioventricular conduction system.

BACKGROUND Although the anatomic "substrate" for the occurrence of antidromic reciprocating tachycardia (ART) has been previously examined, the underlying physiological substrate for this unusual arrhythmia in patients with the Wolff-Parkinson-White syndrome has not been thoroughly characterized. METHODS AND RESULTS The electrophysiological properties of the accessory pathway and normal ventr...

Ventricular tachycardia: mechanistic insights derived from adenosine.