الفهرس 
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Abstract
Objectives: The purpose of our study was to compare the efficiency of levosimendan and preventive intra-aortic balloon pump in high-risk cardiac patients (left ventricular ejection fraction <35%) operated under cardiopulmonary bypass.
Background: Preoperative left ventricular dysfunction is an independent risk factor for perioperative mortality and morbidity and is also associated with postoperative low cardiac output syndrome. IABP improved outcomes in high-risk cardiac patients. However, installation of the balloon has many disadvantages. Recently, a new drug named Levosimendan is commonly used as an inotropic support. it does not increase oxygen demand of myocardium.
Methods: sixty patients were randomized into levosemindan (N=30) and IABP (N=30) CPB groups and compared with respect to The use of inotropic drugs, weaning from CPB, Hemodynamics, transfusion requirements, ICU stay, hospital stay and in-hospital mortality.
Results: There were no differences in preoperative characteristics including patients’ age, sex, BMI, and comorbidities. The Levosemindan group had reduced transfusion requirements and shorter ICU stay as compared to IABP group.
Conclusion: Levosimendan infusion after induction of anesthesia is a good choice with an acceptable option in comparison to IABP. The use of levosimendan in high-risk cardiac patients is comparable to IABP in improving hemodynamics during and after conventional on-pump CABG and results in a shorter ICU stay.