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 type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 50 (estimated) |
| Sponsor | Northwell Health Academic / other |
| Locations | 6 sites (Bay Shore, New York and 5 other locations) |
| Status | Recruiting |
| Started | May 18, 2026 |
| Main results expected | May 18, 2029 |
| Study ends | December 31, 2029 |
| Registry record updated | June 10, 2026 |
| Trial ID | NCT07638995 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
- Principal investigator: James Gabriels, MD — Northwell Health
- Study coordinator: Salome Elia Reddy
- Email: seliareddy@northwell.edu
- Phone: 516-881-7067
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.