Objective: To study the protective effect and its mechanism of monosialoganglioside(GM_1) and methylprednisolone(MP) on brain injuries after cardiopulmonary bypass (CPB).

• 目的:探讨单唾液酸神经节苷脂(GM_1)和甲基强的松龙对体外循环心脏术后脑损伤的保护作用及其机制。