Arrhythmias & electrophysiologyResearch article
Feasibility of Two-Dimensional Speckle-Tracking Echocardiography for Assessing Ablation Complexity in Left Ventricular Outflow Tract Premature Ventricular Contractions
- Feasibility study
Authors' conclusion
A localized earliest-strain pattern was associated with successful PVC elimination using a simple ablation approach, whereas a nonlocalized pattern indicated the need for more complex ablation. This simple, noninvasive metric may aid preprocedural planning for left ventricular outflow tract PVC ablation.
Study context
- Population
- Patients with idiopathic left ventricular outflow tract premature ventricular contractions (PVCs) (V2 transition ratio ≥0.6) undergoing 2-dimensional speckle-tracking echocardiography during monomorphic PVCslocalized 6 · nonlocalized 10
- Participants
- Sixteen patients
- Comparison
- Ablation outcomes were compared according to whether a simple ablation approach (PVC elimination within 30 s at a single site) was achieved
- localizedn = 6
- nonlocalizedn = 10
Main finding
As reported in the abstract
Baseline electrocardiographic characteristics
- Comparable between the groups
Further findings
Total radiofrequency energy to eliminate the targeted PVCs · greater with nonlocalized
P = 0.031
Successful simple ablation approach · lower with nonlocalized
P = 0.035
Ablation-related parameters (contact force, power output, impedance drop at the initial ablation site)
- Similar
Original publication
Feasibility of Two-Dimensional Speckle-Tracking Echocardiography for Assessing Ablation Complexity in Left Ventricular Outflow Tract Premature Ventricular Contractions. Circ Arrhythm Electrophysiol. Published 24 June 2026. doi:10.1161/circep.126.014913
Summarised from the published abstract; every number is checked against it