Clinical trial Recruiting at 6 sites Observational Ages 18 and up

One-chamber leadless atrial pacing and loop recorder follow-up in sinus node dysfunction

Official title: Single Chamber Atrial Leadless Pacing for Isolated Sinus Node Dysfunction

Run by Northwell Health · NCT07638995 · Data updated 2026-11-12

This study tests whether an atrial leadless pacemaker with a loop recorder can help manage symptomatic sinus bradycardia and see if new atrial fibrillation occurs.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment50 (estimated)
SponsorNorthwell Health
Academic / other
Locations6 sites (Bay Shore, New York and 5 other locations)
StatusRecruiting
StartedMay 18, 2026
Main results expectedMay 18, 2029
Study endsDecember 31, 2029
Registry record updatedJune 10, 2026
Trial IDNCT07638995 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults with symptomatic sinus bradycardia or related SA node issues, no prior pacemaker, and willing to use an Assert-IQ loop recorder.

Probably not a fit

Patients with existing ventricular pacing devices, atrioventricular block, prior atrial fibrillation, or plans for cardiac surgery may be less likely to benefit.

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

What this trial studies

This observational study will enroll patients with symptomatic sinus bradycardia who have no prior pacemaker and will receive an Assert-IQ loop recorder to track heart activity. It aims to measure how often new atrial fibrillation develops, how often a single-chamber leadless system needs upgrading to dual-chamber, and how long the Aveir AR battery lasts compared with similar devices in a previous study. Data will come from implanted devices and loop recorder readings over time. The study is sponsored by Northwell Health with Abbott as a collaborator, across multiple New York hospitals.

Why it matters

Potential benefit: If successful, the approach could clarify the role of single-chamber leadless pacing and continuous rhythm monitoring in preventing complications and guiding device upgrades.

How similar studies have gone: Prior studies with leadless pacing and loop recorders have shown promise in similar populations, but this exact combination is being explored in this observational setting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Symptomatic sinus bradycardia
2. Sino-atrial exit block
3. Symptomatic sinus arrest with sinus pauses \> 2 sec during waking hours
4. Symptomatic sinus bradycardia \< 40 bpm for \> 1 min during waking hours
5. PR interval ≤ 0.22 sec if aged \< 70 years or PR interval ≤ 0.26 sec if aged ≥ 70 years
6. QRS width ≤ 0.12 sec
7. No prior PM implantation
8. Patients willing to receive an Assert-IQ loop recorder for research purposes

Exclusion Criteria:

1. Atrioventricular block
2. Bundle branch block
3. History of atrial fibrillation
4. Carotid sinus hypersensitivity
5. Planned cardiac surgery
6. Estimated life expectancy \< 1 year
7. Presence of an existing ventricular pacemaker or implantable cardioverter defibrillator
8. Known acute deep vein thrombosis of either lower extremity
9. Unable to read or write
10. Patient with Limited English Proficiency (LEP)
11. Cognitively impaired individuals
12. Pregnant

Where it's running

  • South Shore University Hospital
    Bay Shore, New York, United States
    Recruiting
  • Huntington Hospital
    Huntington, New York, United States
    Recruiting
  • North Shore University Hospital
    Manhasset, New York, United States
    Recruiting
  • Long Island Jewish Medical Center
    New Hyde Park, New York, United States
    Recruiting
  • Lenox Hill Hospital
    New York, New York, United States
    Recruiting
  • Staten Island University Hospital
    Staten Island, New York, United States
    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.