Heart pacing during surgery may predict and prevent Post-Op AFib
NCT ID NCT03868150
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study involves 600 adults having their first open-heart surgery. Doctors will use a temporary pacemaker to test if the heart is prone to atrial fibrillation (AFib) during the operation. Those who show risk will be randomly assigned to receive the drug amiodarone or standard care to see if it prevents AFib after surgery. The goal is to reduce complications like stroke and hospital stays.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 600 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2017
- Expected to finish
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Dec 2050
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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Accepted
You do not need to have the condition being studied to take part.
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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: * Patients scheduled for first-time non-emergent open-heart surgery for coronary artery bypass graft (CABG) revascularization, valvular repair or replacement, combined CABG with valve repair or replacement, or valve sparing aortic root repair * Normal sinus rhythm * No documented history of atrial fibrillation Exclusion Criteria: * Prior surgical procedures involving heart surgery and cardiopulmonary bypass * Any prior documented history of atrial fibrillation, atrial flutter or atrial tachycardia lasting longer than 30 seconds * Prior history of Amiodarone treatment for the management of supraventricular tachy-arrhythmias * Patients requiring surgical treatment of atrial arrhythmias such as pulmonary vein isolation or Maze procedure.
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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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Stanford University
RECRUITINGStanford, California, 94305, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- A tiny surgical step might stop a common heart rhythm problem after bypass
- Can a common cholesterol drug shield the heart after lung surgery?
- Heart ultrasound may predict Post-Surgery AFib risk
- Heart surgery aftermath: new study seeks to predict and prevent dangerous rhythm problems
- Heart MRI may forecast Post-Surgery rhythm problems
- Small incision during heart surgery may prevent dangerous Post-Op heart rhythm problem