Book 4 - Penetrating Trauma

  1. Ballistics
    The study of projectile motion and it's interactions with the gun, the air, and the object it contacts.
  2. Trajectory
    The path a projectile follows
  3. Cavitation
    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
  4. Caliber
    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)
  5. Yaw
    Swing or wobble around the axis of a projectile's travel (if bullet is slightly deflected)
  6. Factors affecting energy exchange between a projectile and a body tissue:
    • Velocity
    • Profile
    • Stability
    • Expansion and fragmentation
    • Secondary impacts
    • Shape
  7. Factors associate with the damage pathway of a projectile wound:
    • Direct injury
    • Pressure Shock Wave
    • Cavitation
    • Temporary cavity
    • Permanent cavity
    • Zone of injury
  8. Pericardial tamponade
    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
  9. What percent of penetrating trauma mortality involves the head, thorax and abdomen?
  10. Critical structures in which the seriousness of a bullet's impact is increased?
    • Brain
    • Great vessels
    • Heart
    • Liver
    • Kidneys
    • Pancreas
  11. Subcutaneous emphysema
    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
Card Set
Book 4 - Penetrating Trauma
Penetrating Trauma - Book 4