Book 4 - Penetrating Trauma
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The study of projectile motion and it's interactions with the gun, the air, and the object it contacts.
The path a projectile follows
The outward motion of tissue due to a projectile's passage - resulting in a temporary cavity and vacuum.
Related to the bullet's velocity and speed of energy exchange
The diameter of a bullet - in hundredths of an inch; the inside diameter of the barrel of a gun or rifle
(0.22 caliber = 0.22 inches)
Swing or wobble around the axis of a projectile's travel (if bullet is slightly deflected)
Factors affecting energy exchange between a projectile and a body tissue:
- Expansion and fragmentation
- Secondary impacts
Factors associate with the damage pathway of a projectile wound:
- Direct injury
- Pressure Shock Wave
- Temporary cavity
- Permanent cavity
- Zone of injury
Blood filling the pericardial sac, thus limiting heart function
Def: Filling of the pericardial sac with fluid, which in turn limits the filling and function of the heart
What percent of penetrating trauma mortality involves the head, thorax and abdomen?
Critical structures in which the seriousness of a bullet's impact is increased?
- Great vessels
Air within the skin's tissue
- If the barrel of the gun is held very close or against the skin as the weapon is fired, it may push the barrel exhaust into the wound producing this
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