Key result
Fast junctional rhythm (≥150 bpm) during AVNRT ablation appeared at a significantly different angle in the LAO view compared to slower rhythm (110.5° vs 77.5°, P<0.01).
Why the study?
Fast junctional rhythm during slow pathway modification for AVNRT predicts serious atrioventricular block, but the boundary to avoid fast junctional rhythm using 3D electroanatomical mapping had not been investigated.
Does 3D electroanatomical mapping identify a boundary to avoid fast junctional rhythm during slow pathway ablation in patients with AVNRT?
Population
129 consecutive patients with common AVNRT receiving anatomical ablation to an antegrade slow pathway
Comparison
JR1 (heart rate ≥150 bpm) vs JR2 (heart rate <150 bpm) ablation sites
Design
Single-centre observational study
Authors
Loading...
LAO angle on 3D mapping differed for fast junctional rhythms; leaves open whether a proximal His boundary reduces AV block risk.
Observational (n=129)
No
Does 3D electroanatomical mapping identify a boundary to avoid fast junctional rhythm during slow pathway ablation in patients with AVNRT?
Absolute Event Rate: 110.5% vs 77.5%
p-value: p=<0.01
A vertical line drawn down from the proximal His bundle in the LAO view on 3D mapping can serve as a reliable boundary to avoid fast junctional rhythm during AVNRT ablation.
Tachibana et al. (2019) conducted an observational in atrioventricular nodal reentrant tachycardia (AVNRT) (n=129). Anatomical ablation with 3D electroanatomical mapping was evaluated on Angle in the left anterior oblique (LAO) view to the proximal His bundle for fast junctional rhythm (JR1 ≥150 bpm) vs slower junctional rhythm (JR2 <150 bpm) (p=<0.01). Fast junctional rhythm (≥150 bpm) during AVNRT ablation appeared at a significantly different angle in the LAO view compared to slower rhythm (110.5° vs 77.5°, P<0.01).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: