【摘要】 目的探讨大鼠死亡后不同时间腓肠肌电兴奋性的变化,为早期死亡时间的推断提供新的指标。方法建立大鼠机械性窒息模型,利用电生理检测仪检测死亡后不同时间大鼠腓肠肌对不同强度的电刺激的反应性,记录肌肉组织动作电位出现时间,统计学分析其差异并建立回归方程。结果大鼠机械性窒息死亡后一定时间内,其腓肠肌对电刺激的兴奋性与死亡时间呈明显线性关系。结论肌肉组织的电兴奋性可以作为早期死亡时间推断的有效指标。更多还原

【Abstract】 Objective To investigate the changes of excitability of rats′ gastrocnemius after rats were died from mechanic asphyxia, so as to make an objective evidence for estimating of the early postmortem interval. Methods After rats were sacrificed by mechanic asphyxia, the reaction of rats′ gastrocnemius to variable electric stimulation at different period after death were recorded by electricphysiological method.Results Changes in the properties of excitable tissue to electric stimulate in rats′ gastrocnemius after mechanic asphyxia seems to be well correlated with the early postmortem interval and appeared a linear relation in certain period. Conclusion The regular changes of excitability in muscle might be a useful means for estimating of early postmortem interval.更多还原