منابع مشابه
Manifest and Concealed Reentry
The mechanism of the AV nodal Wenckebach phenomenon was studied in 25 dogs by multiple atrial and His bundle electrogram (HBE) recordings. During ventricular stimulation with 1:1 retrograde conduction, the interval from the stimulus artifact to the retrograde His deflection (S-H interval) remained constant. Decreasing the cycle length of stimulation (CLS) resulted in retrograde AV nodal Wenckeb...
متن کاملManifest and concealed reentry. A mechanism of AV nodal Wenckebach phenomenon.
The mechanism of the AV nodal Wenckebach phenomenon was studied in 25 dogs by multiple atrial and His bundle electrogram (HBE) recordings. During ventricular stimulation with 1:1 retrograde conduction, the interval from the stimulus artifact to the retrograde His deflection (S-H interval) remained constant. Decreasing the cycle length of stimulation (CLS) resulted in retrograde AV nodal Wenckeb...
متن کاملManifest and concealed reentry: a mechanism of A-V nodal Wenckebach in man.
In five patients, bundle of His electrograms were recorded during right ventricular pacing at various cycle lengths. In all patients, as the cycle length of stimulation was decreased, the pattern of retrograde conduction proceeded from 1:1 retrograde conduction to retrograde Wenckebach with or without manifest reentry, to retrograde Wenckebach cycles with concealed reentry. The requisite condit...
متن کاملBrugada syndrome: manifest, concealed, "asymptomatic," suspected and simulated.
In the 2001 edition of the textbook Heart Disease (1) Brugada syndrome is defined as a “distinct form of idiopathic ventricular fibrillation (VF) in which patients have right bundle branch block (RBBB) and ST elevation in the anterior precordial leads without evidence of structural heart disease.” Although patients with such characteristics were described before the Brugada brothers reported th...
متن کاملConcealed reentry: a mechanism of atrioventricular nodal alternating Wenckebach periodicity.
Alternating WEnckebach periodicity is generally believed to reflect bilevel block due to horizontal electrophysiologic dissociation in the conducting tissues. We describe a case of atrial pacing-induced atrioventricular nodal alternating Wenckebach periodicity with concealed reentry in a longitudinally dissociated AV conduction system. Three observations support this unique mechanism: Concealed...
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ژورنال
عنوان ژورنال: Circulation
سال: 1973
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.47.4.752