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In-hospital Postoperative Outcomes
Values are number or mean ± standard deviation. pRBC: packed red blood cell, FFP: fresh frozen plasma, PLT: platelet concentrate, ICU: intensive care unit. MB: patients received 2 mg/kg of methylene blue, infused for 20 min before the start of cardiopulmonary bypass, Control: patients received an equivalent amount of normal saline, infused at the same time. *P < 0.05 compared to the control group.
