Click on image to view larger version.

Figure 5 Upper: Efficacy of Ramp and Burst+ atrial tachycardia (AT) pacing (ATP). Data show efficacy rates with 95% confidence intervals for spontaneous episodes of device-classified AT, atrial fibrillation (AF), or all episodes of AT/AF. The arrhythmia classification was based on the arrhythmia type at the time of delivery of first ATP therapy. The efficacy rates were adjusted for multiple events in patients using the Generalized Estimating Equation. Lower: Efficacy of 50-Hz Burst ATP. Data show efficacy rates with 95% confidence intervals for spontaneous episodes of device-classified AT, AF, or all episodes of AT/AF. The arrhythmia classification was based on the arrhythmia type at the time of delivery of first ATP therapy. The efficacy rates were adjusted for multiple events in patients using the Generalized Estimating Equation. The 50-Hz Burst pacing was less efficacious compared with Ramp and Burst+ ATP. 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.