[To estimate early postmortem interval by investigating changes of rats' gastrocnemius excitability].
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.


CONCLUSIONS
The regular changes of excitability in muscle might be a useful means for estimating of early postmortem interval.
Li
Bin
B
West China School of Basic Medicine and Forensic Sciences of Sichuan University, Chengdu 610041, China. lblyzz@163.com
Yan
Hong-Tao
HT
Chen
Wei-Jie
WJ
Wu
Jing-Jie
JJ
Liao
Shi-Ping
SP
Liao
Zhi-Gang
ZG
D000200:Action Potentials / Q000502:physiology*; D000818:Animals; D001237:Asphyxia; D004195:Disease Models, Animal; D004558:Electric Stimulation; D004576:Electromyography / Q000379:methods*; D005260:Female; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D011180:Postmortem Changes; D051381:Rats; D017208:Rats, Wistar; D012044:Regression Analysis; D013997:Time Factors