患者，男，45岁，现症见心悸不宁，胸闷，头晕且痛，四肢发麻，烦躁易怒，夜寐梦多，口苦咽干，舌红，苔黄腻，脉沉弦数。检查：心电图示室性心动过速，血钾正常，未用过洋地黄。除予利多卡因治疗外，并用中医辨证论治。其证型是

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