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Avoid single high-energy pulses in ablation to limit barotrauma risk; in vitro data leave optimal parameters open for clinical validation.
Barotrauma from arc induced shock waves may result in dangerous sequelae during ablation of arrhythmogenic foci. In this report, maximum pulse amplitude and pulse width determinations were made to assess avoidance of shock-wave generation using rectangular constant current pulses. Energy delivery appears to be optimal between 80-100 microseconds. If higher energies are required, multiple pulses will be needed to avoid barotrauma.
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Bardy et al. (1986) studied this question.
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