Efficacy and Safety of Hypertonic Sodium Lactate Solution Compared With 6% HES Solution in CABG Patients

Inclusion Criteria: * Male or female, aged 45-80 years. * CABG patients with on or off pump procedure. * Ejection fraction \<50% * Patients who have given their written informed consent. Exclusion Criteria: * Combined operations(surgeries) * Patients with severe arrhythmia (VT, AF rapid response, heart block) and severe hemodynamic imbalance. * Severe bleeding and/or re-operation. * Hypernatremia\> 155 mmol/L * Severe liver failure: SGOT and SGPT more than twice normal. * Severe renal failure: creatinine more than 2 mg%. * Patients with major diseases such as cancer, etc.