Arrhythmias & electrophysiology
Paradigm Shift for Catheter Ablation of Atypical Atrioventricular Nodal Re-Entrant Tachycardia: 3-Dimensional Mapping-Based Ablation
Authors' conclusion
Catheter ablation targeting the exit sites of LIE or RIE mapped at the CS or TA holds promise as an effective and safe alternative approach to the current targets of ablation for atypical AVNRT cases.
Study context
- Population
- Patients with atypical AVNRT (fast/slow or slow/slow) undergoing electrophysiological study and ablation14 with atypical AVNRT
- Participants
- 42 patients
- Outcome
- Exit site of earliest retrograde atrial activation during atypical AVNRT
Main finding
As reported in the abstract
- Exit sites solely inside the coronary sinus (CS) (left inferior extension, LIE)
- 7 patients
- Exit sites solely in right postero-septal tricuspid annulus (right inferior extension, RIE)
- 3
- Both LIE and RIE exits
- 4
- Distance from CS ostium to LIE exits (mm)
- 14 ± 6
- RIE exits on tricuspid annulus (TA) posterior to CS ostium (LAO projection)
- between 5 and 6 o'clock
Further findings
Long-term elimination of AVNRT with ablation targeting exits or conventional slow pathway
- Success
- 13 of the 14 patients (93%)
Safety
- Complications
- 0
Original publication
Paradigm Shift for Catheter Ablation of Atypical Atrioventricular Nodal Re-Entrant Tachycardia: 3-Dimensional Mapping-Based Ablation. JACC Clin Electrophysiol. Published 21 June 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →