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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

Full criteria on ClinicalTrials.gov

Sites (5)

Sites in registry order. Save your city in your profile to sort them by distance.

SiteCityCountrySite status
Fuwai Hospital, PUMC & CAMS
Coordinator of this site? Confirm its status
BeijingChinaUnknown status
The Second Xiangya Hospital of Central South University
Coordinator of this site? Confirm its status
ChangshaChinaUnknown status
Guangdong Provincial People's Hospital
Coordinator of this site? Confirm its status
GuangzhouChinaUnknown status
Nanjing First Hospital, Nanjing Medical University
Coordinator of this site? Confirm its status
NanjingChinaUnknown status
Fuwai Central China Cardiovascular Hospital
Coordinator of this site? Confirm its status
ZhenzhouChinaUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.