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Figure 4 Efficacy of Ramp or Burst+ atrial tachycardia (AT) pacing (ATP) therapies based on cycle length of the AT at the time of detection (odds ratio, 1.009; 95% confidence interval, 1.003 to 1.016; p = 0.004). Episodes were grouped in quartiles. For every 50 ms increase in cycle length of AT, the odds of effective termination increased by 59%. Solid square = episode termination based on device classification of efficacy; solid circle = episode termination defined as termination within 20 s of delivery of the last pacing therapy. AF = atrial fibrillation.
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