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咪唑安定对兔离体气管平滑肌收缩力的影响 被引量:3

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摘要 目的:为气管高反应患者选择理想镇静遗忘药提供实验室参考依据。方法:通过氯化钾、乙酰胆碱、内皮素或电脉冲4种刺激因素诱发兔离体气管平滑肌收缩,将其浸浴于不同浓度的咪唑安定液中,观察其影响。结果:在0.015mmol/L咪唑安定中,不产生明显抑制作用(P>0.05);0.15mmol/L和0.30mmol/L的咪唑安定可显著抑制这4种刺激因素诱发的气管平滑肌收缩(P<0.05或P<0.01),心得安和中枢性苯二氮卓受体阻滞剂马泽尼不能拮抗咪唑安定对气管平滑肌的舒张作用。结论:咪唑安定对兔离体气管平滑肌张力有显著的抑制作用,其作用机制和抑制细胞外钙内流、细胞内钙释放及DAG/PKC信号传导系统有关,对合并有气管高反应的患者可就用咪唑安定处理,且可安全地用氟马泽尼拮抗其中枢作用而不影响其舒眼气管平滑肌作用。
出处 《中国麻醉与镇痛》 2000年第2期111-114,共4页 China Anesthesia and Analgesia
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