MEDRADSC 1B03 Lecture Notes - Lecture 18: Otitis Media, Rhinorrhea, Sports Injury

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 1B03
• Professor: matthews

Document Summary

Primary direct injuries (laceration, crushing neurons, glial cells, vessels) Tissue damage necrosis loss of function. Focal signs & general signs of increased icp: edema, headache due to pressure on nerves. Recovery occur within 24 hours with no permanent damage. Loss of consciousness/ amnesia/ memory loss/ headaches: contusion. Bruising of brain tissue with rupture of small bv. Edema due to blunt blow to the head. +/- residual damage force of the blow/ degree of soft tissue injury: closed head injury. Brain tissue injured & bv may be ruptured. Outside: no sign of fracture: open head injury. Fractures or penetration of the brain by sharp objects or missiles: linear fractures. Simple cracks in the bone: compound fractures. Increased risk of infection: depressed skull fractures. Displacement of a piece of bone below the level of the skull. **occurs at the base of the skull: e. g. When forehead hits a car windshield with a considerable force.