心性猝死主要由于心律失常所致。在有关发病机制的研究中,对自主神经系统的功能和昼夜间以及季节性的因素都特别关注。心性猝死的所有研究方向最终集中在防治心律失常上。目前理想的药物(除β-阻滞剂外)较少见,故置入除颤器和导管消融在心性猝死的预防中有了越来越重要的作用。心律失常抑制试验(CAST)研究结果虽然否定 Sudden cardiac death due to arrhythmia. In studies of the pathogenesis, particular attention is paid to the functioning of the autonomic nervous system, as well as the diurnal and seasonal factors. All research directions for sudden cardiac death have focused on the prevention and treatment of arrhythmias. At present, the ideal drugs (except β-blockers) are rare, so the placement of defibrillators and catheter ablation in the prevention of sudden cardiac death have an increasingly important role. Arrhythmia inhibition test (CAST) research results although negative