Objective To study the distribution and proportion of neuropeptide containing nervers in the sinus node in cases of sudden manhood death syndrome (SMDS) and to explore the mechanism of SMDS.

• 摘要目的研究青壮年猝死综合徵(SMDS)窦房结肽能神经的分布及其比例关系，探讨SMDS的猝死机制。