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Transient entrainment and interruption of atrioventricular node tachycardia
- Source :
- Journal of the American College of Cardiology. 9:769-775
- Publication Year :
- 1987
- Publisher :
- Elsevier BV, 1987.
-
Abstract
- The possibility of transiently entraining and interrupting the common type of atrioventricular (AV) node tachycardia (anterograde slow, retrograde fast AV node pathway) was studied using atrial and ventricular pacing in 18 patients with paroxysmal AV node tachycardia. Transient entrainment occurred in all patients. During atrial pacing, localized block in the AV node for one beat followed by anterograde conduction over the fast pathway was observed in three patients. During ventricular pacing, localized block for one beat followed by retrograde conduction over the slow pathway was not observed in any patient. Neither atrial nor ventricular fusion beats were observed during entrainment. These observations indicate in a way not previously shown that reentry involving two functionally dissociated pathways in the AV node is the underlying mechanism of paroxysmal AV node tachycardia. The inability to demonstrate atrial or ventricular fusion beats during entrainment suggests a true intranodal location of the reentrant circuit. Finally, the ability to transiently entrain intranodal tachycardia demonstrates that this electrophysiologic phenomenon is not exclusively limited to macroreentrant circuits.
- Subjects :
- Adult
Male
Tachycardia
medicine.medical_specialty
Heart Ventricles
Electrocardiography
Heart Conduction System
Internal medicine
Tachycardia, Supraventricular
medicine
Humans
Tachycardia, Atrioventricular Nodal Reentry
Heart Atria
cardiovascular diseases
Fast pathway
Atrial pacing
medicine.diagnostic_test
business.industry
Cardiac Pacing, Artificial
Reentry
Middle Aged
Ventricular pacing
Atrioventricular node
medicine.anatomical_structure
Anesthesia
Atrioventricular Node
cardiovascular system
Cardiology
Female
medicine.symptom
Cardiology and Cardiovascular Medicine
Entrainment (chronobiology)
business
Subjects
Details
- ISSN :
- 07351097
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Journal of the American College of Cardiology
- Accession number :
- edsair.doi.dedup.....faedf4f3ecb8f5df30578c14e2ad0a0c