May 24, 2016Circulation Arrhythmia and Electrophysiology
Unusual Atrioventricular Reentry Tachycardia in Congenitally Corrected Transposition of Great Arteries
Key result
Radiofrequency ablation of anterior atrial inputs to the anterior atrioventricular node from the posterior pulmonary artery root successfully eliminated AVNRT in a patient with ccTGA.
Population
19-year-old male with congenitally corrected transposition of the great arteries presenting with recurrent…
Design
Case_report
Authors
Discussion
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Implication
May guide ablation mapping in ccTGA; leaves open generalizability beyond this single case.
Study Design
Type
Case Report (n=1)
Multicenter
No
Structured PICO
P
Population
A 19-year-old male with congenitally corrected transposition of the great arteries and recurrent supraventricular tachycardia, followed for 2 years.
I
Intervention
Electrophysiological mapping and catheter ablation targeting the atrioventricular nodal reentry tachycardia (AVNRT) circuit.
O
Outcome
Identification of the tachycardia mechanism and successful ablation site.
This case highlights the complex conduction system anatomy in congenitally corrected transposition of the great arteries, specifically the presence of duplicate AV nodes and His bundles, which is critical for mapping and ablating arrhythmias in this population.
Limitations
- Inherent higher risk of atrioventricular block during AVNRT ablation in ccTGA due to variability in the atrioventricular conduction axis.
- Accessing the coronary sinus in patients with ccTGA may be challenging due to ostial abnormalities.
Cite This Study
Noheria et al. (2016) conducted a case report in Congenitally corrected transposition of the great arteries (ccTGA) with atrioventricular reentry tachycardia (AVNRT) (n=1). Catheter ablation at the posterior pulmonary artery root was evaluated on Elimination of AVNRT. Radiofrequency ablation of anterior atrial inputs to the anterior atrioventricular node from the posterior pulmonary artery root successfully eliminated AVNRT in a patient with ccTGA.