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Rate Control Versus Rhythm Control For Postoperative Atrial Fibrillation

Phase 3
Completed
Conditions
Postoperative Atrial Fibrillation
Interventions
Drug: Rate Control
Procedure: DC-cardioversion
Registration Number
NCT02132767
Lead Sponsor
Icahn School of Medicine at Mount Sinai
Brief Summary

The purpose of this study is to compare the therapeutic strategies of rate control versus rhythm control in cardiac surgery patients who develop in-hospital postoperative atrial fibrillation or atrial flutter (AF). In patients who develop AF during hospitalization after cardiac surgery, the hypothesis is that a strategy of rhythm control will reduce days in hospital within 60 days of the occurrence of AF compared to a strategy of rate control.

Detailed Description

The purpose of the research is to compare two strategies for treating atrial fibrillation or atrial flutter, both of which are referred to as AF, after cardiac surgery. AF is the most common complication after cardiac surgery. AF is when the upper chambers of the heart (atria) experience disorganized electrical activity which causes the heart beat to be irregular. The two treatment strategies to be used in this study are called rhythm control and rate control. The rhythm control strategy will attempt to bring the heart beat back to a regular rhythm using treatments known and approved to control heart rhythm. The rate control strategy will attempt to bring the heart rate to less than 100 beats per minute at rest using medications known and recommended to control heart rate. Both strategies are commonly used to treat AF. All of the medications that will be used in this study are the standard of care for use in patients experiencing AF. This research seeks to determine whether rhythm control is better than rate control in patients with AF after cardiac surgery.

Recruitment & Eligibility

Status
COMPLETED
Sex
All
Target Recruitment
523
Inclusion Criteria
  • Age > 18 years
  • Undergoing heart surgery for coronary artery bypass (on-pump or off-pump CABG) and/or valve repair or replacement (excluding mechanical valves), including re-operations
  • Hemodynamically stable

Randomization Inclusion Criteria

  • AF that persists for > 60 minutes or recurrent (more than one) episodes of AF up to 7 days after surgery during the index hospitalization.
Exclusion Criteria
  • LVAD insertion or heart transplantation
  • Maze procedure
  • TAVR
  • History of or planned mechanical valve replacement
  • Correction of complex congenital cardiac defect (excluding bicuspid aortic valve, atrial septal defect or PFO)
  • History of AF or AFL
  • History of AF or AFL ablation
  • Contraindications to warfarin or amiodarone
  • Need for long-term anticoagulation
  • Concurrent participation in an interventional (drug or device) trial

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
Rate controlRate ControlRate Control in post-operative AF Beta-blocker and/or Calcium channel blockers and/or Digoxin Dose, frequency and duration determined by medical professional as medically needed
Rhythm controlDC-cardioversionRhythm Control in post-operative AF Amiodarone and/or DC-cardioversion Amiodarone Initial Dose * Oral: 400 mg po TID for 3 days is recommended * For patients incapable of taking oral: 150 mg IV bolus over 10 min, then 1 mg/min over 6 hours followed by 0.5 mg/min over 18 hours Maintenance Dose * Oral: at least 200 mg/day to be continued until 60 days after randomization * If drug cannot be given orally or via NG tube: 0.5 mg/min administered through central line (e.g., PICC) until oral dosing is started DC-Cardioversion - frequency and duration determined by medical professional as medically needed
Rhythm controlAmiodaroneRhythm Control in post-operative AF Amiodarone and/or DC-cardioversion Amiodarone Initial Dose * Oral: 400 mg po TID for 3 days is recommended * For patients incapable of taking oral: 150 mg IV bolus over 10 min, then 1 mg/min over 6 hours followed by 0.5 mg/min over 18 hours Maintenance Dose * Oral: at least 200 mg/day to be continued until 60 days after randomization * If drug cannot be given orally or via NG tube: 0.5 mg/min administered through central line (e.g., PICC) until oral dosing is started DC-Cardioversion - frequency and duration determined by medical professional as medically needed
Primary Outcome Measures
NameTimeMethod
Total Number of Days in HospitalWithin 60 days of randomization

The total number of days in hospital for any hospitalization that occurs within 60 days of randomization to AF treatment strategy.

Secondary Outcome Measures
NameTimeMethod
Cost (Hospital)Within 60 days of randomization

Compare cost of index hospitalization and cost of rehospitalizations (including ED visits) between groups

Heart Rhythm Comparison60 days after randomization

Compare heart rhythm (number of patients in sustained, stable non-AF rhythm) between treatment arms at 60 days after randomization

AF- or Treatment-related EventsWithin 60 days of randomization
Time to Conversion to Sustained, Stable Non-AF RhythmUp to index hospital discharge or 7 days post surgery, whichever came first
Length of Stay (Index Hospitalization)Within 60 days post surgery

Overall length of stay for the index hospitalization

Length of Stay (Rehospitalization, Including ED Visits)Within 60 days of randomization

Compare length of stay between groups for any cause and AF-related hospitalizations, including ED visits

Outpatient InterventionsWithin 60 days of randomization

Compare frequency of outpatient visits between groups for any cause and AF-related causes

Trial Locations

Locations (23)

Montefiore Einstein Heart Center

🇺🇸

Bronx, New York, United States

Icahn School of Medicine at Mount Sinai

🇺🇸

New York, New York, United States

Columbia University Medical Center

🇺🇸

New York, New York, United States

University of Virginia Health Systems

🇺🇸

Charlottesville, Virginia, United States

Baylor Research Institute

🇺🇸

Plano, Texas, United States

University of Southern California

🇺🇸

Los Angeles, California, United States

University of Pennsylvania

🇺🇸

Philadelphia, Pennsylvania, United States

Emory University

🇺🇸

Atlanta, Georgia, United States

Mission Hospital

🇺🇸

Asheville, North Carolina, United States

Cleveland Clinic Foundation

🇺🇸

Cleveland, Ohio, United States

The Ohio State University Medical Center

🇺🇸

Columbus, Ohio, United States

University of Maryland

🇺🇸

Baltimore, Maryland, United States

Hôpital du Sacré-Cœur de Montréal

🇨🇦

Montreal, Quebec, Canada

Toronto General Hospital

🇨🇦

Toronto, Ontario, Canada

University of Alberta Hospital

🇨🇦

Edmonton, Alberta, Canada

Baylor College of Medicine

🇺🇸

Houston, Texas, United States

University of Wisconsin

🇺🇸

Madison, Wisconsin, United States

Montreal Heart Institute

🇨🇦

Montréal, Quebec, Canada

Institut Universitaire de Cardiologie de Quebec (Hopital Laval)

🇨🇦

Quebec, Canada

Centre Hospitalier de l'Université de Montréal

🇨🇦

Montreal, Quebec, Canada

NIH Heart Center at Suburban Hospital

🇺🇸

Bethesda, Maryland, United States

Duke University

🇺🇸

Durham, North Carolina, United States

University of Michigan Health Services

🇺🇸

Ann Arbor, Michigan, United States

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