Impact of Micro-, Mini- and Multi-Electrode Mapping on Ventricular Substrate Characterisation
Key result
Increasing sampling density with smaller electrodes improves near-field signal detection during ventricular substrate mapping.
Why the study?
During substrate-based ablation, wide practice variations exist between mapping via dedicated multi-electrode catheters versus conventional ablation catheters, alongside recent introductions of newer catheter technologies.
Comparison
Micro-, mini-, and multi-electrode mapping catheters vs conventional ablation catheters
Design
Review article
Authors
Discussion
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Member takes
Implication
May enhance ventricular substrate characterization in ablation; extends mapping concepts but leaves clinical outcomes open.
Structured PICO
I
Intervention
Micro-, mini- and multi-electrode mapping
C
Comparator
Conventional ablation catheters
O
Outcome
Ventricular substrate characterisation
Smaller mapping electrodes increase sampling density and resolution, improving the characterization of ventricular substrates for arrhythmia ablation.
Limitations
- Lack of contact force measurement in currently available multi-electrode catheters
- Multi-spline variants are often arrhythmogenic during endocardial mapping
- Voltage mapping data for transmural tissue information need to be interpreted with caution
Cite This Study
Berte et al. (2020) conducted a review in Ventricular tachycardia. Micro-, mini- and multi-electrode mapping vs. Conventional ablation catheters was evaluated. Increasing sampling density with smaller electrodes allows for higher resolution with a greater likelihood to record near-field electrical information during ventricular substrate mapping.