Antitachycardia Pacing for Very Fast Ventricular Tachycardia and Low-Energy Shock for Ventricular Arrhythmias in Patients With Implantable Defibrillators

2015 HRS/EHRA/APHRS/SOLAECE expert consensus statement on optimal implantable cardioverter-defibrillator programming and testing

“…The results of the trial showed that over a median follow-up of 36 months and compared with ramp pacing, burst pacing was more effective for terminating fast VT episodes (between CL 240 and 320 ms) [170]. In a prospective study of 602 patients, a strategy of tiered ATP and low-energy shock was efficacious and safe in patients with VT CL greater than 250 ms, with extremely low syncope rates [171]. However, a "realworld" retrospective study on 2000 patients with 5279 shock episodes from the LATITUDE remote monitoring system showed that the success rate of first shock as first therapy was approximately 90%, but the success rate was lower after failed ATP.…”

Efficacy of Anti-Tachycardia Pacing for Terminating Fast Ventricular Tachycardia in Japanese Implantable Cardioverter Defibrillator Patients

“…Sivagangabalan et al reported ATP and low-energy shock (LES) efficacy for vFVT (CL, 200-250 ms). 22 According to that study, the first-ATP success rate for vFVT was 35.8%. Compared with shock therapy, ATP improved quality of life, 18 and produced no increase in mortality or heart failure.…”

An Automatic Algorithm Based on Morphological Stability During Fast Ventricular Arrhythmias Predicts Successful Antitachycardia Pacing in ICD Patients: A Multicenter Study

“…It could be used by future devices to allow a higher number of ATP attempts in those episodes with a high degree of EGMs affinity (>70%), trying to minimize the number of high energy therapies. On the other hand, very fast VAs have been associated with a high incidence of syncopal events . In the series by Sivagangabalan et al .…”