Kinematics involved in the assessment of a patient suffering from Blast Injuries, Blunt Trauma, and Penetrating Injuries Flashcards
defined:
The branch of mechanics that studies the motion of a body or a system of bodies without consideration given to its mass or the forces acting on it, its essence revolves around motion. All injury, except thermal and radiation, are related to the interaction of the host and a moving object. What really happened at the scene?
Kinematics
___________states that every object will remain at rest or in uniform motion unless compelled to change its state by the action of an external force. We know it more commonly as Inertia.
Newton’s first law
The forms energy can take are:
(a)Mechanical
(b)Thermal
(c)Electrical
(d)Chemical
One simple example of energy transfer is found in the study of firearms and projectiles known as _____
ballistics
Who first proposed that the kinetic energy possessed by the bullet was dissipated in four ways
Theodore Kocher
kinetic energy possessed by the bullet is dissipated in what four ways?
(a) Heat
(b) Energy used to move tissue radically outward
(c) Energy used to form a primary path by direct crush of the tissue
_____ the deviation of the projectile in its longitudinal axis from the straight line of flight
Yaw
______ the forward rotation around the center of mass
Tumbling
_____a mushrooming of the projectile that increases the diameter of the projectile, usually by a factor of 2, increases the surface area, and, hence, the tissue contact area by four times; hollow point, soft nose, and dum-dum bullets all promotedeformation
Deformation
_________ in which multiple projectiles can weaken the tissue in multiple placesand enhance the damage rendered by cavitation. This usually occurs in high-velocity missiles.
Fragmentation
What energy level?
Knives, needles, ice picks (hand-driven weapons)
1) Tissue damage by crushing is minimal
2) Throat, thoracic, abdominal, and back stabbing
Low
What energy level?
Firearms with muzzle velocity of less than 1,500 feet second. (.357 magnum, 9 mm, .45auto)
Medium
What energy level?
(a) Firearms with muzzle velocity of more than 1500 feet per second. (.44 magnum, .50AE)
(b) Injury track of high-powered weapons are at least 2-3 times the diameter of the projectile
High
true/False
Elastic tissue (bowel and lung) tolerate damage better than non-elastic organs (heart,liver, kidney and brain.)
true
Tissue destruction is related to the _______ of the projectile
energy
