Trauma Flashcards
Trauma
Primary cause of death in ages between 1-44 years old
-occurs when external source of energy affects the body beyond its ability to sustain and dissipate it
Mechanical energy
Energy from motion-KINETIC ENERGY
Potential energy
Energy an object can have when stationary
Chemical Energy
Energy released as a result of a chemical reaction and can be found in an explosive or an acid
Electrical Energy
Form of high voltage
Barometric Energy
Sudden radical changes in pressure
Biomechanics
Study of a living organism using tools
Kinetics
Study of speed, mass, direction of force, and physical injury
Organs
Organs that have gas inside can be easily compressed
Types of injury
Depend on force and energy delivered
Blunt Trauma
When skin is not broken and the force and energy is made to dissipate
Duration of force application
Affects trauma because rapidly applied amounts of energy are less tolerated than an identical amount over a longer period of time
Impact resistance of body parts
Determined by what is inside the organs (gas, liquid, solid)
Index of suspicion
Suspecting an injury is present
Velocity
Distance an object travels per unit time
KE
=m/2XV2
Phases of MVC
First: deceleration of vehicle Second: deceleration of occupant Third: deceleration of organs Fourth: secondary collision Fifth: additional impacts
Head on Impact
Brain Injury Scalp Spinal Chest Pneumo Femoral Aortic tear -less survivors
Rear end
Whiplash bleeding inside skull
-more survivors
Abrupt deceleration forces
Sudden stop
- shearing, avulsing, rupturing of organs
- chest vulnerable to aortic injury
- blunt abdominal injuries
Organs commonly affected
Kidneys, small intestine, liver, large intestine, pancreas and spleen
Lateral Impact
Pelvis and chest
Rotational or quarter panel impacts
Forward and diagonal Impact
-three angled seatbelts
Rollovers
May be ejected without seatbelt
- ejection increased death by 25%
- 1 in every 13 people in ejection sustain major cervical spine damage
Airbags
Will not deployed unless hit from the front and won’t if hit lateral quarter
- abrasions to face, arms and hands
- cornstarch used in airbags to load
- pediatrics can be killed with airbag deployment
Motorcycle Crashes
Helmets transmit forces to the spine
4 types of crashes:
Head on- hit and continue forward until stopped by outside force yielding bilateral femur or tibia fractures
Angular Impact- direct crushing injuries to lower extremity between object and motorcycle
Ejected rider- laying down or sliding results in road rash
MOI’s
First: auto strikes body
Second: body hits hood
Third: body hits grund
Waddell Triad
Bumper hits pelvis, chest and abdomen hit grille, head strikes vehicle and ground
Don Juan Syndrome
Jumping down to ground
Energy transferred to heel, legs, pelvis and chest
T12-L1 and L2
-children younger than 3 have fewer injuries from falls greater than three stories than children and adults
Stab Wounds
Low versus high velocity.
Depends on length, blade, and motion of weapon