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Belly fat may predict heart rhythm trouble after bypass surgery

NCT ID NCT07467941

Knowledge-focused Sponsor: Kartal Kosuyolu Yuksek Ihtisas Education and Research Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 will follow 300 people having planned coronary bypass surgery to see if the amount of belly fat they carry affects their risk of developing atrial fibrillation (a type of irregular heartbeat) after the operation. Before surgery, doctors will use ultrasound to measure the thickness of visceral fat (the fat around internal organs). The goal is to learn whether this simple measurement can help predict who might have heart rhythm problems after surgery.

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 belly fat is linked to heart rhythm problems after surgery, doctors might use this to identify high-risk patients and take extra precautions.
What could go wrong
This is an observational study, not a treatment test. It only looks for a connection, so it won't prove that belly fat causes the problem. Results may not apply to all 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 300 people

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

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Jan 2027

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

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

Who is studied

Adult patients (≥18 years) scheduled for coronary artery bypass graft surgery.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Elective isolated coronary artery bypass graft surgery (on-pump) * Age ≥18 years, planned prospectively in 300 patients Exclusion Criteria: * Patients requiring urgent or emergency surgery * Off-pump coronary artery bypass graft surgery * Surgeries other than isolated coronary artery bypass graft * Patients in whom abdominal ultrasound measurement cannot be performed (e.g., due to severe deformity, wounds, edema) * Active malignancy * eGFR \<30 mL/min * Advanced-stage chronic obstructive pulmonary disease (COPD) * Preoperative atrial fibrillation or atrial flutter * Patients who do not provide written informed consent for the study

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Conditions

The condition(s) this trial relates to.

atrial fibrillation coronary artery disorder

As listed by the trial registrant

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

Atrial fibrillation (AF) CABG Visceral adipose tissue

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

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