- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03392649
Tragus Stimulation to Prevent Atrial Fibrillation After Cardiac Surgery (TraP-AF)
Tragus Stimulation to Prevent Atrial Fibrillation After Cardiac Surgery: The TraP-AF Study
Study Overview
Detailed Description
This was a single-blind study where patients were randomized tragus stimulation versus sham procedure and remained blinded to their treatment allocation. Both treatment options utilized similar equipment, namely the use of alligator clips which will be placed on the tragus and earlobe of the right ear for patients.
Prior to cardiac surgery, the discomfort threshold of both left and right tragus stimulation was determined for all participating patients. Intermittent electrode signals, or microcurrents, were delivered at 20 Hz with100 µsec pulse width with variable microampere (mA) output. The discomfort threshold was defined as the stimulation intensity in mA at which point patients experience discomfort. The stimulation intensity used in the study was set below the sensation and discomfort threshold. The clip was placed on the patient's ear at the end of surgery. Stimulation then continued, one ear alternating with the other, every 4 hours for a total of 48 hours. If the patient showed any sign of discomfort from stimulation, the intensity of stimulation was reduced to a level at which signs of discomfort disappears.
Follow-up was performed with a 14-day event monitor at the time of discharge, as clinically indicated. Echocardiography were assessed prior to study initiation and when clinically available in follow-up.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Illinois
-
Chicago, Illinois, United States, 60637
- The University of Chicago
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients ≥18 years of age, <90 years of age
- Estimated life expectancy of at least 1 year at the time of enrollment
- History of sinus rhythm or paroxysmal atrial fibrillation
Exclusion Criteria:
- Patients ≥90 years of age, <18 years
- Patients with known prior history of persistent or permanent AF
- Atrial Fibrillation occurrence within the last 24 hours of procedure
- Urgent or Emergency cases
- Pregnant patients
- Patients undergoing the following cardiac procedures: heart transplant, pulmonary thromboendarterectomy, isolated aortic arch procedures, congenital hear disease, ventricular assist device insertion, extracorporeal membrane oxygenation insertion, and surgical AF ablation
- Antiarrhythmics prior to surgery (Class I and Class III)
- High degree atrioventricular block requiring temporary pacing
- Prior maze procedure for the treatment of AF
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
No Intervention: Sham Group
At the end of cardiac surgery, the Parasym alligator clip was placed on the subject's tragus, but the Parasym was not turned on and the subject did not receive any stimulation.
The clip was switched to the other ear every 4 hours for a total of 48 hours.
|
|
Experimental: Stimulation Group
At the end of cardiac surgery, the Parasym alligator clip was placed on the subject's tragus, and the subject received continuous stimulation for 48 hours.
The clip was switched to the other ear every 4 hours.
|
Tragus stimulation was done using the Parasym device.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Time to the First Episode of Atrial Fibrillation (AF) >30 Seconds
Time Frame: From end of surgery to end of hospitalization, up to 1 month.
|
Time to the first episode of atrial fibrillation (AF) that was greater than 30 seconds in patients who had AF.
This was assessed on the review of patient chart and inpatient telemetry.
|
From end of surgery to end of hospitalization, up to 1 month.
|
Number of Participants Hospitalized for >5 Days
Time Frame: From end of surgery to end of hospitalization, up to 1 month.
|
Number of participants with an overall length of hospitalization greater than five days.
|
From end of surgery to end of hospitalization, up to 1 month.
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Overall Atrial Fibrillation (AF) Burden
Time Frame: From end of surgery to end of hospitalization, up to 1 month.
|
The total number of hours of atrial fibrillation (AF) burden as an inpatient.
|
From end of surgery to end of hospitalization, up to 1 month.
|
Number of Participants With Rate Control Medications Used for AF
Time Frame: From end of surgery to end of hospitalization, up to 1 month.
|
Number of participants that the management of their postoperative atrial fibrillation (AF) utilized the use of rate-controlling medications such as beta-blockers, calcium-channel blockers, or the use of digoxin.
|
From end of surgery to end of hospitalization, up to 1 month.
|
Number of Participants With Antiarrhythmic Used to Treat AF
Time Frame: From end of surgery to end of hospitalization, up to 1 month.
|
Number of participants that antiarrhythmic was use to treat atrial fibrillation (i.e., use of amiodarone)
|
From end of surgery to end of hospitalization, up to 1 month.
|
Number of Participants With Inotropes Used for Blood Pressure Support During AF
Time Frame: From end of surgery to end of hospitalization, up to 1 month.
|
The number of participants who management of their postoperative atrial fibrillation (AF) required the use of inotropic vasoactive or pressor medications for blood pressure (BP) support
|
From end of surgery to end of hospitalization, up to 1 month.
|
Number of Participants With Stroke or Transient Ischemic Attack (TIA)
Time Frame: From end of surgery to end of hospitalization, up to 1 month.
|
The number of participants who suffered from a cerebral vascular accident (CVA) or transient ischemic attacks (TIA) for any cause during hospitalization was recorded.
|
From end of surgery to end of hospitalization, up to 1 month.
|
All-cause Mortality
Time Frame: From end of surgery to end of hospitalization, up to 1 month.
|
Number of participants who suffered from mortality due to any cause during the inpatient period
|
From end of surgery to end of hospitalization, up to 1 month.
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Gaurav A. Upadhyay, MD, University of Chicago
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- IRB17-1365
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Atrial Fibrillation
-
Ablacon, Inc.CompletedArrhythmias, Cardiac | Atrial Fibrillation, Persistent | Persistent Atrial Fibrillation | Longstanding Persistent Atrial FibrillationGermany
-
Ablacon, Inc.RecruitingAtrial Fibrillation | Arrhythmias, Cardiac | Arrhythmia | Atrial Flutter | Atrial Fibrillation, Persistent | Atrial Tachycardia | Atrial Arrhythmia | Atrial Fibrillation Paroxysmal | Atrial Fibrillation, Paroxysmal or PersistentUnited States, Belgium, Netherlands, Czechia
-
Barts & The London NHS TrustAtriCure, Inc.Not yet recruitingAtrial Fibrillation, Persistent | Persistent Atrial Fibrillation | Atrial Arrhythmia | Atrium; FibrillationUnited Kingdom
-
AtriCure, Inc.Active, not recruitingPersistent Atrial Fibrillation | Atrial Fibrillation (AF) | Longstanding Persistent Atrial FibrillationUnited States
-
Maastricht University Medical CenterRWTH Aachen UniversityUnknownAtrial Fibrillation (Paroxysmal) | Atrial Fibrillation Recurrent | Atrial Fibrillation Common Gene VariantsNetherlands
-
Adagio MedicalRecruitingAtrial Fibrillation | Atrial Flutter | Paroxysmal Atrial Fibrillation | Persistent Atrial FibrillationNetherlands, Germany, Belgium
-
Vivek ReddyEnrolling by invitationAtrial Fibrillation and Flutter | Atrial Flutter Typical | Atrial Fibrillation, Paroxysmal or PersistentUnited States
-
Fundació Institut de Recerca de l'Hospital de la...RecruitingAtrial Arrhythmia | Atrial Fibrillation and Flutter | Atrial Fibrillation RecurrentSpain
-
St. George's Hospital, LondonRecruitingAtrial Fibrillation | Atrial Fibrillation, Persistent | Persistent Atrial Fibrillation | Atrial ArrhythmiaUnited Kingdom
-
R-PharmFSBI "National Medical Research Center of Cardiology named after academician...CompletedAtrial Flutter | Paroxysmal Atrial Fibrillation | Persistent Atrial FibrillationRussian Federation
Clinical Trials on Parasym
-
Hospital Clinic of BarcelonaJohns Hopkins University; Imperial College London; Hospital Mutua de Terrassa; Universitat...RecruitingSystemic Lupus Erythematosus | Autoimmune Disorder | Vagus Nerve Autonomic DisorderSpain
-
Hippocration General HospitalNot yet recruitingMyocardial Infarction | TachyarrhythmiaGreece, United States, United Arab Emirates
-
University of OklahomaRecruitingAtrial Fibrillation | Heart Failure, DiastolicUnited States
-
University of OklahomaAmerican Heart AssociationCompletedInflammation | Atrial FibrillationUnited States
-
Northwell HealthUniversity of OklahomaRecruitingPremature Ventricular ContractionUnited States
-
Casa Colina Hospital and Centers for HealthcareCompletedCognitive Dysfunction | Post COVID-19United States
-
University of OklahomaRecruitingLymphoma | Breast CancerUnited States
-
University of OklahomaDysautonomia InternationalCompletedPostural Orthostatic Tachycardia SyndromeUnited States
-
University of OklahomaRecruitingAtrial FibrillationUnited States
-
University of PennsylvaniaActive, not recruitingAtrial FibrillationUnited States