Key result
High-resolution mapping localizes slowest VT conduction to curvatures and reveals entrainment mapping overestimates isthmus size.
Why the study?
In postinfarction reentrant VT, conduction velocities vary and entrainment mapping may overestimate isthmus size, suggesting a need for improved mapping techniques.
Does high-resolution activation mapping better estimate true isthmus size compared to entrainment mapping in postinfarction reentrant VT?
Does high-resolution activation mapping better estimate true isthmus size compared to entrainment mapping in postinfarction reentrant VT?
High-resolution activation mapping may provide more accurate isthmus sizing than entrainment mapping to better guide ablation therapy for postinfarction VT.
High-resolution activation mapping may improve isthmus targeting in post-MI VT ablation; challenges entrainment mapping as the reference standard.
In postinfarction reentrant VT, conduction velocities are slowest at the proximal and distal curvatures. Entrainment mapping overestimates the true size of the isthmus. High-resolution activation mapping of VT may better guide ablation therapy.
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Anter et al. (2016) studied this question. High-resolution activation mapping of postinfarction reentrant VT reveals conduction is slowest at curvatures, while entrainment mapping overestimates isthmus size.
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