快速心房起搏可导致细胞内钙离子超载。
HIRI的确切机制目前尚不完全清楚，多数学者认为与氧自由基及钙离子超载等因素有关。
Although the pathogenesis of HIRI has not been completely understood, most of scholars believe that HIRI is related to free oxygen radicals and calcium overload, et al.
方法：用荧光倒置显微镜来测定癫痫状态下海马CA1、CA3区钙超载的情况，并用钙离子拮抗剂尼莫地平作用于海马脑片看钙超载的变化。
Methods: calcium overloading in hippocampal CA1, CA3 region of epileptic rats was measured using a fluorescent inverted microscope, and the inhibition by the nimodipine was observed, too.
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