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红黄通脉冲剂（ＨＨＴＭ）的主要有效部位为黄酮类化合物。ＨＨＴＭ１００ｍｇ·ｋｇ－１（以所含总黄酮计）ｐｏ给药，对乌头碱诱发大鼠室性心律失常、肾上腺素诱发家兔室性心律失常及引起小鼠室颤有明显的对抗作用，明显提高肾上腺素和乌头碱致室性早搏的阈剂量，减少氯仿致小鼠室颤的发生率。对哇巴因诱发豚鼠的心律失常无明显对抗作用
The main active site of HHTM is flavonoids. HHTM100mg · kg-1 (total flavonoids included) po administered, aconitine-induced ventricular arrhythmia in rats, adrenergic induced ventricular arrhythmia and ventricular fibrillation caused by a significant antagonistic effect, Significantly increase the threshold dose of epinephrine and aconitine induced ventricular premature beats and reduce the incidence of ventricular fibrillation induced by chloroform in mice. No significant antagonism of ouabain induced guinea pig arrhythmia