Clinical trial Recruiting at 1 site Interventional

Ultrasound guidance for S‑ICD implantation

Official title: Feasibility of an Intra-operative and Non-fluoroscopic Subcutaneous ICD Positioning and Assessment of the PRAETORIAN Score During Implantation: a Pilot Study

Run by Universitätsklinikum Köln · NCT06771700 · Data updated 2026-11-12

This pilot will test whether ultrasound can replace pre‑operative X‑ray and allow intraoperative estimation of the PRAETORIAN score for patients receiving a subcutaneous ICD.

Quick facts

Study typeInterventional
SexAll
Enrollment20 (estimated)
SponsorUniversitätsklinikum Köln
Academic / other
Locations2 sites (Cologne, North Rhine-Westphalia and 1 other locations)
StatusRecruiting
StartedMarch 1, 2025
Main results expectedOctober 30, 2025
Study endsNovember 1, 2025
Registry record updatedJuly 9, 2025
Trial IDNCT06771700 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults scheduled for S‑ICD implantation at the center who can provide informed consent and are not pregnant.

Probably not a fit

Patients who require transvenous ICDs, are pregnant, cannot consent, or whose chest anatomy prevents reliable ultrasound imaging may not benefit.

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

What this trial studies

This pilot enrolls about 20 consecutive patients scheduled for subcutaneous ICD (S‑ICD) implantation at University Hospital Cologne. During implantation, clinicians will use ultrasound with a dummy electrode and device on the chest to choose lead and generator positions, and then confirm positioning with the current standard fluoroscopic X‑ray before implanting. The study will also test whether manual intraoperative measurements of lead‑to‑sternum distance and generator position by non‑fluoroscopic means allow calculation of the PRAETORIAN score prior to defibrillation testing. There are no deviations from standard implantation procedures and no additional follow‑up beyond the routine post‑operative chest X‑ray on day one.

Why it matters

Potential benefit: If successful, this approach could let teams use ultrasound instead of pre‑operative X‑ray and estimate the PRAETORIAN score during surgery, reducing radiation exposure and enabling earlier risk stratification.

How similar studies have gone: The PRAETORIAN score is validated on post‑operative chest X‑rays to predict defibrillation success, but using intraoperative ultrasound to determine the score is novel with limited prior data.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* consecutive patients presenting for S-ICD implantation at our institution

Exclusion Criteria:

* patients unable to consent.
* pregnancy

Where it's running

  • University Hospital Cologne
    Cologne, Germany
    Recruiting
  • University Hospital Cologne
    Cologne, North Rhine-Westphalia, Germany
    Not yet recruiting

Study contacts

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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.