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Figure 4 Shock success of triphasic (2.0/3.2/9.2 ms) and biphasic (3.3/11.1 ms) waveform shocks of equal-energy pulses at three 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 <65 J, and 65 J (n = 9).