Changes of Evoked Muscle Action Potentials in Gunshot Wounds
- VernacularTitle:创伤弹道的诱发肌电变化
- Author:
Qi WAN
- Publication Type:Journal Article
- Keywords:
Wounds;
gunshot;
Evoked potentials;
muscle
- From:Journal of Third Military Medical University
1984;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Evoked muscle action potentials(EMAP) of skeletal muscle by a small shpe-rical steel bullet hit with high velocity are recorded in 10 mongrel dogs.After wounding the EMAP are measured at the distances of 0.5,1.5,3,4,cm from the edge of the permanent wound cavity in longitudinal direction at 1,3,6,8 h respectively.Simultaneously,tissue samples are taken for electron microscopic observation.Debridement and gross examination are carried out 8 h after wounding.The results indicate: 1.the changes of EMAP in gunshot wounds cause by high velocity bullet coincide with the ultrastructural alterations;2.at 0.5cm from the wound tract the low and sustained amplitude and duration values of EMAP may -be taken as an objective evidence to distinguish devitalized from living tissues;3.the injury at inner and outer layer of concussion zone is reversible.
