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Catheter-mediated electrical ablation: the relation between current and pulse width on voltage breakdown and
Pacing and Clinical Electrophysiology : PACE
|November 1, 1986
Summary
Arc-induced shock waves during ablation can cause barotrauma. Optimizing pulse width (80-100 microseconds) and using multiple pulses can prevent dangerous shock-wave generation and barotrauma.
Area of Science:
- Cardiac Electrophysiology
- Biomedical Engineering
- Medical Physics
Background:
- Arrhythmogenic foci ablation carries risks of barotrauma from arc-induced shock waves.
- Understanding shock wave generation is crucial for patient safety during ablation procedures.
Purpose of the Study:
- To determine optimal pulse parameters for ablation to avoid dangerous shock-wave generation.
- To assess the relationship between pulse characteristics and barotrauma during ablation of arrhythmogenic foci.
Main Methods:
- Utilized rectangular constant current pulses for ablation energy delivery.
- Measured maximum pulse amplitude and pulse width to analyze shock wave generation.
- Investigated energy delivery thresholds for optimal ablation and safety.
Main Results:
- Identified an optimal energy delivery range between 80-100 microseconds pulse width.
- Demonstrated that higher energies necessitate multiple pulses to prevent barotrauma.
- Characterized pulse parameters to mitigate shock-wave related complications.
Conclusions:
- Optimizing pulse width and employing multiple pulses are key strategies to avoid barotrauma during ablation.
- Rectangular constant current pulses can be modulated to enhance safety in ablation procedures.
- Findings provide guidance for safer ablation techniques by managing shock wave energy delivery.