Atrial Pacing-Induced Reverse Alternating Wenckebach Periods. A Common Electrophysiologic Phenomenon in Patients with Dual Atrioventricular Nodal Pathways.
نویسندگان
چکیده
منابع مشابه
Dual atrioventricular nodal pathways: a common electrophysiologic response in children.
Electrophysiologic investigation was performed on 61 children and young adults during evaluation of either cardiac dysrhythmia or pre- or postoperative congenital heart disease. The results of these studies were reviewed retrospectively to determine if longitudinal dissociation of the atrioventricular node (AVN) was present. Dual AVN pathways were detected by the atrial extrastimulus technique,...
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The linking phenomenon is an electrophysiological phenomenon of conduction between 2 different pathways, such as bundle branches, atrioventricular node (AVN) and accessory pathways. The present study used electrophysiological studies to investigate this phenomenon in 14 patients with dual AVN pathways. Decremental ramp pacing at intervals of 10 ms was carried out in high right atrium until the ...
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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...
متن کاملPatients with Dual Atrioventricular Nodal Pathways
Electrophysiological studies were performed in two patients with documented paroxysmal supraventricular tachycardia and dual atrioventricular (AV) nodal pathways as defined by the atrial extra-stimulus technique. Both patients manifested two ranges of A-H intervals (AV nodal conduction times) at critical cycle lengths, reflecting fastand slow-pathway conduction. The occurrence of fastand slow-p...
متن کاملMultilevel block in the atrioventricular node during atrial tachycardia and flutter alternating with Wenckebach phenomenon.
The electrocardiograms of 100 patients with rapid and regular PP intervals during atrial arrhythmias (because of atrial tachycardia or flutter, or pacing) were examined for periods of irregular atrioventricular conduction. This irregular conduction corresponds to an alternating Wenckebach phenomenon, of a type that can be determined from simple rules. The different types of conduction encounter...
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ژورنال
عنوان ژورنال: Japanese Heart Journal
سال: 1994
ISSN: 0021-4868,1348-673X
DOI: 10.1536/ihj.35.431