Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Optimal ATP settings for new ICDs in heart disease patients

Official title: Optimal ATP Settings in the VT Zone for New Implantable Cardioverter Defibrillator (ICD) Implantation (DAN-ATP)

Run by Copenhagen University Hospital, Rigshospitalet · NCT07354347 · Data updated 2026-11-12

This trial tests whether Burst or Ramp ATP settings in the VT zone of a new ICD help patients with heart disease.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment3980 (estimated)
SponsorCopenhagen University Hospital, Rigshospitalet
Academic / other
Locations1 site (Copenhagen, Dr.)
StatusRecruiting
StartedFebruary 1, 2026
Main results expectedJuly 31, 2041
Study endsJuly 31, 2041
Registry record updatedSeptember 4, 2026
Trial IDNCT07354347 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Patients receiving a new ICD for either primary or secondary prevention of sudden cardiac events due to heart disease.

Probably not a fit

Patients may not benefit if their VT physiology or comorbidities render ATP settings less effective for their rhythm patterns.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This pragmatic, cluster-randomized trial compares two ATP programming strategies (Burst vs Ramp) for ventricular tachyarrhythmias in patients receiving a new ICD. Hospitals are randomized to one strategy for four months at a time, with the chosen approach followed for the device’s lifetime unless reprogrammed. The study focuses on ATP delivery in the VT zone defined as roughly 180–249 (up to 269) beats per minute. Outcomes are driven by the occurrence of ATP events over time, aiming to determine which setting reduces VT-related interventions. Participation is offered to patients undergoing ICD implantation for primary or secondary protection, with opt-out allowed.

Why it matters

Potential benefit: If successful, the preferred ATP setting could reduce VT events and improve ICD performance and patient comfort.

How similar studies have gone: Prior ATP programming work has shown variability in performance; this pragmatic trial tests a specific two-option strategy in a real-world setting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

\- ICD implantation for primary or secondary prophylactic indication

Exclusion Criteria:

* None
* Patients can actively opt out of participation in the study

Where it's running

  • The Heart Center, Rigshospitalet
    Copenhagen, Dr., Denmark
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.