The Effect of 6% Hydroxyethyl Starch 130/0.4 on Blood Loss and Coagulation in Patients Medicated With Antiplatelet Agents Prior to Off-Pump Coronary Bypass Graft Surgery

Exclusion Criteria

• •Patient who has
• •Valvular disease of heart
• •MI within 3 months,patient under 40% of left ventricle preoperative output
• •left main artery stenosis
• •anemia (hemoglobin \< 12 g/dl), coagulopathy (Platelet \< 100/nl, activated partial thromboplastin time, aPTT) \> 80sec, serum creatinine \> 1.2 mg/dl, respiratory disease(asthma, COPD, PaO2 \< 70 mmHg, pulmonary hypertension or pulmonary edema, etc)
• •not consented to this trial