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Figure 2 Shock success of triphasic (4.8/4.8/4.8 ms) and biphasic (7.2/7.2 ms) waveform shocks of equal-duration pulses at five intervals of actually delivered energy to the animals in part I. Triphasic waveform shocks achieved higher success rates at the intervals of 40 J, 40 to <50 J, and 50 to <65 J (n = 32).