Why the study?
Does vectorcardiographic loop analysis differentiate between typical and atypical atrial flutter?
Does vectorcardiographic loop analysis differentiate between typical and atypical atrial flutter?
Vectorcardiographic loop analysis can non-invasively differentiate between typical and atypical atrial flutter, potentially aiding in the planning of ablation procedures.
Supports non-invasive flutter subtype differentiation for ablation planning; leaves open prospective validation before clinical adoption.
Current techniques for atrial flutter (AFL) treatment involve radiofrequency ablation. This is a relatively simple and short procedure for typical AFL, whereas becomes more complex and unpredictable in the case of atypical AFL. Therefore, non-invasive characterization of AFL would be helpful for the management of ablation procedures. In this study the behavior of typical and atypical AFL groups is characterized from the vectorcardiographic AFL loops. The initial hypothesis is that typical AFL loops resemble each other, whereas atypical AFL loops differ from typical AFL ones. All patient loops were compared to a reference, by analyzing the global trajectory, pathway complexity and distance to the reference loop. The distance was the most significative parameter, being 0.445 ± 0.135 and 0.799 ± 0.144 for typical and atypical AFL (p = 8.00 e-5). In addition, an intrapatient analysis revealed a higher stability of typical AFL loops than in the case of atypical AFL.
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Castells et al. (2011) studied this question.
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