The influence of metallic foreign bodies in body after firearm wound

摘要

Objective: To observe the influence of metallic foreign body retention in the body of the body of local and systemic effects after gunshot wound. Methods: 16 healthy Landrace pigs were randomly divided into injury 1, 2, 3, and 6 m four groups. Using 53 type musket ball launch 0.25 g pig hind limbs muscle injuries, injury while velocity measurement. Observed shortly after injury, changes in vital signs and 6 h after injury under sterile conditions debridement of the wound, while the ball buried in different parts of the body, lead weights and tungsten beads, metallic foreign body was observed on long-term retention in the body. Results: Animals injury gradually accelerated breathing and heart rate, blood pressure decreased after injury, after injury 48 h to return to normal levels. Within 48 h serum iron content decreased as bleeding, then gradually increased to 3 m after injury tissue and serum iron, lead and tungsten content of more than the normal level. Microscopy revealed early mild inflammation around the metallic foreign body reaction seen after January metallic foreign body muscles around different degrees of calcification and fibrosis, spinal cord and brain parenchymal neuronal degeneration, reduced Nissl bodies, nucleus disappeared, reduced cell number, and other pathological changes to close the wound tract from the most obvious place.