Clinical trial Recruiting at 1 site Observational Ages 18 and up

Assessing long-term outcomes of LAA contrast flow after heart procedure

Official title: Long-Term Outcomes of Left Atrial Appendage Contrast Flow in CT Scans After Endocardial LAA Closure: The CF-CT Registry

Run by Kansas City Heart Rhythm Research Foundation · NCT06075628 · Data updated 2026-11-12

This study looks at how well heart devices used to close the left atrial appendage work over time in patients, especially those at high risk, to see if they prevent leaks, blood clots, and strokes.

More Atrial Fibrillation trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment100 (estimated)
SponsorKansas City Heart Rhythm Research Foundation
Academic / other
Locations1 site (Overland Park, Kansas)
StatusRecruiting
StartedJuly 24, 2023
Main results expectedDecember 2025
Study endsDecember 2025
Registry record updatedAugust 28, 2025
Trial IDNCT06075628 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 and older who have undergone LAA closure with either the Watchman/Watchman FLX or Amplatzer Amulet devices between January 2019 and June 2022.

Probably not a fit

Patients who have not undergone LAA closure with the specified devices or those under 18 years of age may not benefit from this study.

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 aims to evaluate the long-term outcomes of left atrial appendage (LAA) contrast flow in patients who have undergone LAA closure using FDA-approved devices. It will involve a retrospective review of approximately 100 patient charts to investigate the incidence of peri-device leaks, device-related thrombosis, and the occurrence of strokes or transient ischemic attacks. The study seeks to understand the correlation between LAA contrast flow and the effectiveness of the closure devices over time, particularly in high-risk patients transitioning from anticoagulation to antiplatelet therapy.

Why it matters

Potential benefit: If successful, this study could provide insights into the long-term safety and effectiveness of LAA closure devices, potentially improving patient outcomes in atrial fibrillation management.

How similar studies have gone: This study is novel as there are currently no existing studies or registries focusing on the long-term follow-up of left atrial appendage contrast flow.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subjects must be at least 18 years of age.
* Subjects underwent LAA closure with Watchman/Watchman FLX or Amplatzer Amulet at our institution from January 2019 till June 2022

Exclusion Criteria:

* No definite exclusion criteria are defined for the study as all patients with Watchman-FLX or Amplatzer Amulet will be included in the study.

Where it's running

  • Kansas City Heart Rhythm Institute
    Overland Park, Kansas, United States
    Recruiting

Study contacts

  • Principal investigator: Dhanunjaya Lakkireddy, MD — Kansas City Heart Rhythm Institute
  • Study coordinator: Donita Atkins
  • Email: datkins@kchrf.com
  • Phone: 816-651-1969

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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.