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Heart rhythm hiccups may fog your brain, study suggests

NCT ID NCT04033510

Knowledge-focused Sponsor: David Brunk, PA-C, MMS Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether people with atrial fibrillation (AF) have temporary drops in thinking skills during an AF episode. Researchers will test 600 patients using tablet-based games that measure memory, attention, and decision-making while in AF and again after their heart returns to normal rhythm. The goal is to understand if AF itself affects brain function, not to test a new treatment.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If it works, this could show that AF episodes temporarily affect thinking skills, pointing toward ways to protect the brain during AF.
What could go wrong
This is an observational study, not a treatment trial. It only measures short-term changes and may not apply to all AF patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 600 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2019

Expected to finish

Jan 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Patients of Colorado Springs Cardiology: A Centura Health Clinic (CSC) with a history of, or new diagnosis of, Atrial fibrillation with the intention of being converted back to normal rhythm.

Ages

35 to 80 years

Sex

Anyone

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Subjects who are patients at CSC or Penrose-St. Francis Health Services. * Subjects actively in an episode of paroxysmal, or persistent AF (who are expected to receive treatment and converted back to normal rhythm (through antiarrhythmic drug therapy, direct current cardioversion, ablation or Maze/Minimally invasive Maze procedure). * Subjects with a history of AF who have had \>3 documented episodes of AF over the preceding 12 months and meet all other inclusion/exclusion criteria can pre-enroll. The cognition tests will be administered during the patient's next captured AF episode. Exclusion Criteria: * Patients who had coronary bypass surgery during their life time. * Patients with a previously documented history of post-pump syndrome during their life time. * Patients with presence of, or medical diagnosis of Transient Ischemic Attack (TIA) or Cerebral Vascular Accident (CVA). * Patients with presence of, or medical diagnosis of cognitive impairment (dementia, multiple sclerosis, traumatic brain injury, etc.). * Female patients who are pregnant or post-partum. * Individuals unwilling or unable to take an anticoagulant.

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Conditions

The condition(s) this trial relates to.

atrial fibrillation cognitive disorder Cognitive Dysfunction Neurobehavioral Manifestations

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Atrial fibrillation Cognitive change Cognitive impairment Cognitive impairment, mild Cognitive symptom Executive dysfunction

Contacts and locations

Locations

  • Penrose St. Francis

    Colorado Springs, Colorado, 80907, United States

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