Spinal Cord Stimulation to Treat Post-operative Atrial Fibrillation

Inclusion Criteria: 1. Patients which will be subjected to an OFF-pump CABG procedure 2. More than 18 years of age 3. Subject is able and willing to give informed consent. Exclusion Criteria: 1. Patients with known history of atrial arrhythmias. 2. Patients who are not treated with β-blockers unless heart rate is too low for β-blockers assumption. 3. Participation in another clinical trial which may affect the outcome within 3 months prior to day of procedure. 4. Other surgical interventions (e.g. valve replacement) programmed in the same surgical session 5. Resting pulse rate ≤45 beats / min as assessed before daily doses of β-blockage is administered. 6. Hypotension (RR systolic \<100 or RR diastolic \<50). 7. Conduction abnormalities on the ECG consisting of a 1st degree atrioventricular block or a complete bundle branch block. 8. Subject is diagnosed with epilepsy or history of seizures. 9. Coagulation abnormalities as determined by anticoagulation guidelines for neuroaxial procedures 2011. 10. Patients not stabilized on an anti-arrhythmic drug regimen for the last 30 days. 11. Patients with long QT syndrome. 12. Patients with Brugada syndrome. 13. Patients affected by Polyneuropathy (e.g. due to diabetes). 14. Patients affected by pericarditis 15. Patients who underwent procedures in the past, which are expected to have changed the innervation of the heart for example: * Ablation procedure * Cardiac surgery 16. Pregnant patients or nursing (subjects who are of child bearing potential and are not on a reliable form of birth control will undergo a pregnancy test) 17. Patients already implanted with cardiac devices 18. Patients with existing implanted neurostimulators