急性心肌梗塞并发心动过缓最常见的是窦性心动过缓及房室传导阻滞。发病后数小时内发生的植物神经功能紊乱,以及窦房结的急性缺血,可引起窦性心动过缓;病变累及房室结、希氏束及室内传导束,可发生不同程度、不同部位的房室传导阻滞,并出现结性或室性逸搏性心动过缓。这些过缓心律一方面可诱发快速性室性心律失常如室性早搏、室性心动过速、心室颤动以及心室停顿而威胁生命,而且,即使急性 Acute myocardial infarction complicated with bradycardia is the most common sinus bradycardia and atrioventricular block. Occurred within hours after onset of autonomic dysfunction, as well as acute sinus node sinus ischemia, can cause sinus bradycardia; lesions involving atrioventricular node, His bundle and indoor conduction beam, can occur in varying degrees, different parts Of atrioventricular block, and nodular or ventricular escape syndrome bradycardia. These bradycardia, on the one hand, can induce rapid ventricular arrhythmia, such as premature ventricular contractions, ventricular tachycardia, ventricular fibrillation and ventricular pause and life-threatening, and even acute