Evaluating the timing of anti-tachycardia pacing for ICD patients

A Multicenter Prospective Randomized Study to Evaluate the Delivery Timing Safety and Efficacy of AntiTachycardia Pacing

Not applicable Interventional Biotronik SE & Co. KG · NCT05426785

This study is testing if starting anti-tachycardia pacing sooner can help Japanese patients with implantable cardioverter defibrillators avoid unnecessary shocks.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment398 (estimated)
Ages18 Years and up
SexAll
SponsorBiotronik SE & Co. KG Industry-sponsored
Locations1 site (Kitakyushu-city, Fukuoka)
Trial IDNCT05426785 on ClinicalTrials.gov

What this trial studies

This clinical trial compares the safety and efficacy of early multiple anti-tachycardia pacing (ATP) settings against conventional extended detection settings in Japanese patients with implantable cardioverter defibrillators (ICDs). Patients are randomized into two groups: one receiving early ATP treatment and the other receiving standard treatment. The study aims to determine the effectiveness of early ATP in preventing inappropriate shocks from the ICD. Data will be collected during hospital visits and through home monitoring over an undefined follow-up period.

Who should consider this trial

Good fit: Ideal candidates include Japanese patients who require an ICD and are either undergoing de novo implantation or have had an ICD implanted for 10 days or less.

Not a fit: Patients who have received ICD therapy or have specific conditions like Idiopathic VF may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved management of ventricular tachycardia and fibrillation, reducing unnecessary shocks for patients with ICDs.

How similar studies have performed: Other studies have explored ATP settings, but this specific approach focusing on early multiple ATP in a Japanese population is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient has an indication for ICD according to the The Japanese Circulation Society (JCS )/ Japanese Heart Rhythm Society (JHRS) 2021 Guideline Focused Update on Non-Pharmacotherapy of Cardiac Arrhythmias
* Patient is either planned for de novo ICD implantation or is already implanted with an investigational ICD for 10 days or less.
* Patient can be treated with ATP therapy for both VT and VF zone
* Patient is willing and able to use the CardioMessenger and accepts the Home Monitoring concept
* Patient is willing to visit the hospital in accordance with physician's instruction
* Patient is able to understand the nature of the study and to provide written informed consent

Exclusion Criteria:

* Patient planned for implantation with or already implanted with Cardiac Resynchronization Therapy Defibrillator (CRT-D) device
* A patient who is confirmed to have received ICD therapy
* A patient who is diagnosed as Idiopathic VF (e.g. Brugada syndrome, Long QT Syndrome, other IVF)
* Age \< 18 years
* A patient who has impaired mental status
* Life expectancy less than 18 months
* Participation in another interventional clinical investigation
* Pregnant or breastfeeding

Where this trial is running

Kitakyushu-city, Fukuoka

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Implantable Cardioverter DefibrillatorICDshockAntitachycardiac PacingVentricular TachycardiaVentricular FibrillationVentricular arrhythmias
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.