**Ivabradine Versus Beta-Blockers in Patients with Conduction Abnormalities or Left Ventricular Dysfunction Undergoing Coronary Artery Bypass Grafting**

Luminita Iliuta1,2 and Roxana Enache2

*1Department of Cardiac Surgery, "Prof. Dr. C. C. Iliescu" Emergency Institute of Cardiovascular Diseases, Bucharest 2"Carol Davila" University of Medicine and Pharmacy, Bucharest Romania* 
