NCT07918781Not yet recruiting
Partial Cardiac Denervation for Preventing Atrial Fibrillation After CABG
Cardiac Autonomic Neuromodulation in Myocardial Revascularization (CALM): A Multicenter Randomized Controlled Trial of Partial Cardiac Denervation for the Prevention of Postoperative Atrial Fibrillation After Coronary Artery Bypass Grafting
Source: ClinicalTrials.gov · Last updated 5 Nov 2026
Brief summary (registry, in English)
Postoperative atrial fibrillation (POAF) is the most common arrhythmia following cardiac surgery and is associated with increased risks of mortality, stroke, myocardial infarction, and hospital readmission. The cardiac autonomic nervous system plays an important role in the development of POAF and may represent a potential target for preventive intervention. The CALM trial is a multicenter, randomized controlled trial designed to evaluate the efficacy and safety of partial cardiac denervation for the prevention of POAF in patients undergoing isolated coronary artery bypass grafting (CABG). A total of approximately 1,470 participants will be randomly assigned in a 1:1 ratio to undergo CABG with partial cardiac denervation or CABG alone. Partial cardiac denervation consists of transection of the ligament of Marshall and resection of the Waterston fat pad. The trial will evaluate the incidence of POAF within the first 6 postoperative days and the occurrence of long-term adverse clinical events. Participants will undergo scheduled rhythm monitoring and clinical follow-up, and all participants will be followed until the last enrolled participant completes 3 years of follow-up after surgery.
- Status (registry)
- Not yet recruiting
- Study type
- Interventional
- Enrollment
- 1470 (estimated)
- First submitted
- 23 Oct 2026
- Start date
- 1 Dec 2026
- Primary completion date
- 31 Dec 2030
- Lead sponsor
- China National Center for Cardiovascular Diseases
- NCT number
- NCT07918781
What you commit to
- Study type: Interventional
- Planned participants: 1470
- From 1 Dec 2026 to the primary completion date, 31 Dec 2030
- 5 sites in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study design.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Previous cardiac surgery.
- Emergency surgery.
- Prior history of atrial fibrillation.
- Use of antiarrhythmic medications other than beta-blockers within 2 weeks before surgery.
- Planned concomitant cardiac procedures, including but not limited to congenital heart disease surgery or left ventricular reconstruction.
Other illness
- Preoperative critical condition.
Lab values
- Left ventricular ejection fraction of 30% or lower.
Other
- Left atrial diameter greater than 50 mm.
Who the study is looking for
- Adults aged 18 years or older.
- Scheduled to undergo isolated coronary artery bypass grafting, either with or without cardiopulmonary bypass.
- Able and willing to provide written informed consent.
- No atrial fibrillation detected on preoperative 24-hour electrocardiographic monitoring.
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (5)
Sites in registry order. Save your city in your profile to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Fuwai Hospital, PUMC & CAMS Coordinator of this site? Confirm its status | Beijing | China | Unknown status |
| The Second Xiangya Hospital of Central South University Coordinator of this site? Confirm its status | Changsha | China | Unknown status |
| Guangdong Provincial People's Hospital Coordinator of this site? Confirm its status | Guangzhou | China | Unknown status |
| Nanjing First Hospital, Nanjing Medical University Coordinator of this site? Confirm its status | Nanjing | China | Unknown status |
| Fuwai Central China Cardiovascular Hospital Coordinator of this site? Confirm its status | Zhenzhou | China | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.