Key result
The mitral annulus-aorta junction was the source of left atrial tachycardia in 28% (10/35) of patients, and targeted ablation eliminated the arrhythmia with no recurrence over 24 months.
Why the study?
Can catheter ablation successfully eliminate left atrial tachycardia originating from the mitral annulus-aorta junction?
Population
35 consecutive patients with left atrial tachycardia, and a comparative study in mouse embryos
Design
Cohort
Follow-up
mean 24+/-19 months
Authors
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May support targeted ablation at the mitral annulus-aorta junction; extends known tachycardia sources but leaves open prospective validation.
Observational (n=35)
Can catheter ablation successfully eliminate left atrial tachycardia originating from the mitral annulus-aorta junction?
The mitral annulus-aorta junction is a previously unrecognized but frequent source of left atrial tachycardia that can be successfully targeted and eliminated with catheter ablation.
González et al. (2004) conducted an observational in Left atrial tachycardia (n=35). Ablation at the mitral annulus-aorta junction was evaluated on Origin of arrhythmia from the MA-Ao junction. The mitral annulus-aorta junction was the source of left atrial tachycardia in 28% (10/35) of patients, and targeted ablation eliminated the arrhythmia with no recurrence over 24 months.
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