3.3 VT Acceleration
In 290 VT episodes of ATP therapies, occurrences of VT acceleration were significantly associated with faster than with slower VTs (p = 0.006, odds ratio, 1.04; average VT heart rate of episodes including acceleration vs. no acceleration, 200 bpm, SD: 21 vs. 178 bpm, SD: 25). In contrast, no significant difference was observed in acceleration occurrence in other items (Table 5).