CABG REVEAL: Atrial Fibrillation After Coronary Artery Bypass Graft
| Status: | Active, not recruiting |
|---|---|
| Conditions: | Atrial Fibrillation |
| Therapuetic Areas: | Cardiology / Vascular Diseases |
| Healthy: | No |
| Age Range: | 60 - Any |
| Updated: | 9/8/2018 |
| Start Date: | June 18, 2013 |
| End Date: | September 2019 |
A Prospective Look at Incidence of Atrial Fibrillation After Coronary Artery Bypass Graft and Related Morbidity/Mortality Utilizing the Reveal XT
Atrial Fibrillation is an abnormal heart rhythm that can occur after coronary heart bypass
graft operations. How often this happens and what other problems occur for a person after
these operations needs to be better understood. This study uses a device called the Reveal
XT, a small device that records heart rhythms to track a patient's heart rhythms after the
bypass surgery. The device is implanted at the time the bypass graft is made. The information
that is gathered for this study will help physicians to provide better treatment and
follow-up of the patients under their care.
graft operations. How often this happens and what other problems occur for a person after
these operations needs to be better understood. This study uses a device called the Reveal
XT, a small device that records heart rhythms to track a patient's heart rhythms after the
bypass surgery. The device is implanted at the time the bypass graft is made. The information
that is gathered for this study will help physicians to provide better treatment and
follow-up of the patients under their care.
We will utilize the Reveal XT implantable loop recorder (ILR) in order to monitor the
incidence of AF in our post-CABG patients. The Reveal XT has been shown to be superior in
comparison to the more commonly used sporadic ECGs.6 Unfortunately, the occurrences of
arrhythmias tend to be "unpredictable" and often paroxysmal. Observers are unlikely to have
the opportunity to record ECGs at the time of event until it is too late. The ability of the
Reveal XT to continuously record ECGs over long periods of time has made it a superior and
powerful diagnostic tool in patients with arrhythmias and arrhythmia related complications.
This was evident in the large multicenter PICTURE study whereby a large number of diagnostic
tests were undertaken in patients with unexplained syncope without providing conclusive data,
but in the same study with the Reveal ILR, the mechanism of syncope in the vast majority of
these patients were established often at first onset of an arrhythmia.7
"The equivalent efficacy", if not superiority, of Reveal ILRs above conventional ECGs and
Holter-monitors in detecting AF was established in the "XPECT" trial.8 Its sensitivity in
detecting events not seen with ECGs and Holter monitoring post COX MAZE procedure (surgical
procedure for AF) and post ablations for paroxysmal AF and persistent AF is well established.
incidence of AF in our post-CABG patients. The Reveal XT has been shown to be superior in
comparison to the more commonly used sporadic ECGs.6 Unfortunately, the occurrences of
arrhythmias tend to be "unpredictable" and often paroxysmal. Observers are unlikely to have
the opportunity to record ECGs at the time of event until it is too late. The ability of the
Reveal XT to continuously record ECGs over long periods of time has made it a superior and
powerful diagnostic tool in patients with arrhythmias and arrhythmia related complications.
This was evident in the large multicenter PICTURE study whereby a large number of diagnostic
tests were undertaken in patients with unexplained syncope without providing conclusive data,
but in the same study with the Reveal ILR, the mechanism of syncope in the vast majority of
these patients were established often at first onset of an arrhythmia.7
"The equivalent efficacy", if not superiority, of Reveal ILRs above conventional ECGs and
Holter-monitors in detecting AF was established in the "XPECT" trial.8 Its sensitivity in
detecting events not seen with ECGs and Holter monitoring post COX MAZE procedure (surgical
procedure for AF) and post ablations for paroxysmal AF and persistent AF is well established.
Inclusion Criteria:
- 60 years of age or older
- Presenting for elective Coronary Artery Bypass Graft at Saint Thomas West Hospital
Exclusion Criteria:
- Patients <60 years of age
- Prior cardiac surgery
- Emergent surgery
- Need for concomitant cardiac surgery other than PFO closure
- Prior history of AF or Atrial flutter
- Prior atrial ablation
- Prior cardioversion
- Patients with prior permanent pacemaker
- Ejection fraction <35%
- Prior history of thyroid disease
- Prior history of a cardiomyopathy
- Patients without telephonic access
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