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Discordant Junctional Beats and Preexcitation
- Source :
- Circulation: Arrhythmia and Electrophysiology. 8:991-992
- Publication Year :
- 2015
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 2015.
-
Abstract
- An 18-year-old woman with Down syndrome and ventricular preexcitation was referred to our center for electrophysiological evaluation. She had no structural heart disease, and her 12-lead ECG showed minimal preexcitation. After obtaining an informed consent, an electrophysiology study was performed under conscious sedation. Via bilateral femoral veins, multipolar diagnostic catheters were introduced and positioned at the His bundle region and coronary sinus. A roving quadripolar catheter was positioned alternatively in the right ventricle, the right atrium appendage, and successively was used for mapping. At the beginning of the procedure, nonpreexcited junctional beats were recorded, a phenomenon compatible with a typical atrioventricular accessory pathway (AP). However, a comprehensive electrophysiology study confirmed the presence of an innocent fasciculoventricular pathway (FVP), showing minimal and fixed preexcitation (ie, the His–ventricular interval) during multisite atrial pacing and at different pacing rates. The effective refractory period …
- Subjects :
- medicine.medical_specialty
Pre-Excitation Syndromes
Adolescent
Electrocardiography
Electrophysiology study
Heart Conduction System
Heart Rate
Physiology (medical)
Internal medicine
medicine
Humans
Accessory atrioventricular bundle
Coronary sinus
medicine.diagnostic_test
business.industry
Effective refractory period
medicine.disease
medicine.anatomical_structure
Ventricle
Anesthesia
cardiovascular system
Cardiology
Female
Electrical conduction system of the heart
Cardiology and Cardiovascular Medicine
business
Pre-excitation syndrome
Subjects
Details
- ISSN :
- 19413084 and 19413149
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Circulation: Arrhythmia and Electrophysiology
- Accession number :
- edsair.doi.dedup.....4599dbfe3962f27754636f30a2417a0d