Key result
Anterior ablation for perimitral flutter is linked to ~31% biatrial tachycardia incidence versus mitral isthmus ablation.
Why the study?
Does a left atrial anterior ablation line compared to mitral isthmus ablation increase the incidence of biatrial tachycardia in patients with perimitral flutter?
Population
28 patients diagnosed with perimitral flutter out of a larger cohort of 807 patients undergoing atrial…
Comparison
Left atrial (LA) anterior ablation line (AnL) vs Mitral isthmus (MI) ablation
Design
Cohort
Authors
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May favor mitral isthmus over anterior lines to avoid biatrial tachycardia; hypothesis-generating for perimitral flutter ablation strategies.
Observational (n=28)
Does a left atrial anterior ablation line compared to mitral isthmus ablation increase the incidence of biatrial tachycardia in patients with perimitral flutter?
Absolute Event Rate: 31% vs 0%
Creating an anterior ablation line for perimitral flutter can lead to the development of biatrial tachycardia, which can be diagnosed via entrainment mapping and successfully terminated by ablation in Bachmann's bundle insertion areas.
Mikhaylov et al. (2014) conducted an observational in Perimitral flutter (n=28). Left atrial anterior ablation line (AnL) vs. Mitral isthmus (MI) ablation was evaluated on Development of biatrial tachycardia (bi-AT). Left atrial anterior ablation line for perimitral flutter resulted in the development of biatrial tachycardia in 31% of patients, compared to 0% with mitral isthmus ablation.
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