Arrhythmias & electrophysiology
Slow/fast atrioventricular nodal reentrant tachycardia catheter ablation guided by atrial resetting: The new insight
Authors' conclusion
LE AVNRT is a common finding and can be ablated by a right-sided approach in most cases.
Study context
- Population
- Patients with slow/fast atrioventricular nodal reentrant tachycardia (AVNRT)enrolled during a 1-year period, resetting in 25 (69%)
- Participants
- 36 patients
- Comparison
- Resetting favoring right inferior extension (RIE) vs left extension (LE)
- RIEn = 18
- LEn = 5
- 2 alternating AVNRTsn = 2
- Outcome
- Resetting not performed
Main finding
As reported in the abstract
Nonsustained tachycardia
10 patients
28%
Failed atrial capture
1 patient
Further findings
Site of best resetting, of the remaining 25 patients
| Outcome | RIE | LE | 2 alternating AVNRTs | P value |
|---|---|---|---|---|
| Mean H-Stim in the RIE positionRIE vs LE · longer when resetting favored RIE | mean 46 ± 13 ms | mean 16 ± 21 ms | — not stated in the abstract | P < 0.001 |
| Mean H-Stim in the LE positionLE vs RIE · similar pattern | mean 15 ± 18 ms | mean 59 ± 20 ms | — not stated in the abstract | P < 0.001 |
| Distance of ablation site to His bundleLE vs RIE | mean 18.5 ± 4 mm | mean 9.6 ± 3 mm | — not stated in the abstract | P < 0.001 |
— not stated in the abstract
- Distance of ablation site to His bundle: left inferior extension ablated from the right side, significantly closer to the His bundle
Original publication
Slow/fast atrioventricular nodal reentrant tachycardia catheter ablation guided by atrial resetting: The new insight. Heart Rhythm. Published 12 March 2025. doi:10.
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