Impedance-Based Contact Visualization for PulseSelect Pulmonary Vein Isolation: A Single-Center Feasibility Study
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Updated: Nov 11, 2026
Three-Dimensional Echocardiographic Method for the Visualization and Assessment of Specific Parameters of the Pulmonary Veins
Published on: October 28, 2020
Masahiro Mizobuchi1, Junya Matsumoto2, Kaito Oka2
1Cardiovascular Center Kyoto-Katsura Hospital Kyoto Japan.
Background:
PulseSelect pulmonary vein isolation (PVI) lacks a dedicated contact indicator.
Methods:
We retrospectively compared 63 patients undergoing PVI before and after EnSite Contact Index (CI) implementation. Because electrical isolation does not confirm lesion transmurality, post-procedural unipolar electrograms (u-EGMs) were assessed as acute surrogate markers.
Results:
CI guidance was associated with more applications, shorter fluoroscopy, and in an exploratory analysis of analyzable patients, fewer residual high-voltage u-EGMs (1/20 vs. 8/24; p = 0.027). No complications occurred.
Conclusions:
CI-guided PVI was feasible; these procedural and acute electrophysiological associations require prospective validation.
