最近研究提出,在实验条件下由于心肌缺血引起的腺苷释放可能在心动过缓和房室传导阻滞中起重要作用。动物实验中腺苷对房室传导的抑制作用 可能是通过某种特异的细胞外受体而起作用。这种受体被甲基黄嘌呤及氨茶硷所阻滞,而对阿托品无反应。急性下壁心肌梗塞最初24小 Recent research suggests that adenosine release due to myocardial ischemia under experimental conditions may play an important role in bradycardia and atrioventricular block. In animal experiments adenosine inhibition of atrioventricular conduction may be through a specific extracellular receptor to play a role. This receptor is blocked by methylxanthine and aminophylline, but no response to atropine. Acute inferior myocardial infarction 24 hours initially