Heart MRI may forecast Post-Surgery rhythm problems
NCT ID NCT04657835
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether a special MRI scan can predict if patients will develop an irregular heartbeat (atrial fibrillation) after heart bypass surgery. About 100 adults scheduled for bypass will get an MRI before surgery and wear a heart monitor for a year. The goal is to find early signs of heart changes that lead to this common complication.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2028
An estimate. End dates often move.
- Lead sponsor
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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.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age ≥ 18 years * Indication for surgical myocardial revascularization by isolated coronary artery bypass grafting, to be performed in the cardiac surgery department of Saint-Étienne University Hospital. * Patient affiliated with or entitled to social security coverage * Patient who has received informed information about the study and has co-signed, with the investigator, a consent form to participate in the study Exclusion Criteria: * Contraindication related to cardiac MRI * Contraindication related to ILR implantation * Documented history of atrial fibrillation * Concomitant indication for valve surgery or other associated cardiac intervention * Inability to understand French * Patient refusal to participate in the study and/or inability to express consent or sign the informed consent form * Patient subject to legal protection measures
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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.
Contacts and locations
Locations
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CHU Saint-Etienne
Saint-Etienne, 42055, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Heart bypass surgeons test which vein layout keeps grafts open
- A soft patch that watches your heart beat in real time
- Zapping the ear: a new way to stop Post-Surgery heart rhythm problems?
- Squeeze a ball, lower your blood pressure? heart trial puts handgrip exercise to the test
- New heart scan aims to spot hidden plaque before it strikes
- Can a kidney ultrasound scan warn of kidney damage after heart bypass surgery?