| Question |
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| Answer |
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| What is the primary cause of death and disability in people ages 1-34 |
truama |
| What is the acute physological and structural change that occurs in a patients body when an external source of energy dissipates faster then the body's ability to sustain and dissipate it. |
Trauma |
| What kind of energy is from motion or energy stored in an object |
Mechanical energy |
| What type of energy is associated with motion |
Kinetic energy |
| What type of energy does one have when they are on top of a building |
Potential anergy |
| what kind of energy can be found from an explosion or even an acid |
Chemical energy |
| What kind of energy comes from high voltage |
Electrical energy |
| What type of energy can result from sudden changes in pressure. Often from diving or flying |
Barometric energy |
| The study of the physiology and mechanics of a living organism useing the tools of mechanical engineering |
Biomechanics. |
| What studies the relationships between speed, mass, and the direction of force |
Kinetics |
| If an organ that has a gas inside sustains alot of energy what happens |
it will scatter more of the energy, meaning it is more likely to collapse and cause more injury |
| What is the distance an object travels per unit time |
Velocity |
| The rate of change of velocity that an object is subjected to, wether speeding up or slowing down. |
Acceleration |
| The downward acceleration that is imparted on any object on earth by the effect of the earths mass |
Gravity |
| Does velocity or mass have a greater effect on kinetic energy |
Velocity |
| what states that energy can neither be created nor destroyed, it can only change form. |
The law of conservation of energy |
| what does newtons first law of motion say |
a body at rest will stay at rest unless acted on by an outside force |
| What does newtons second law of motion say |
the force that an object can exert is the product of it's mass times it's acceleration |
| what is th g limit for a human |
~30g |
| decelerating forces can induce what type of injuries to organs |
shearing, avulsing, or rupturing |
| The aorta, the largest velssel in the body, is the most common site for whattype of injury |
decelerating |
| Crush type injuries causeing fractures ribs can cause the fractured ribs to do what other type of injury. |
internal injuries of the lungs and heart |
| blunt cardiac injury can compress the heart muscle between bones in the chest causing what |
arrythmias, and direct injury to the heart muscle |
| the 5 phases of a MVA are what |
1st phase is deceleration of the vehicle, 2nd deceleration of the occupant, 3rd deceleration of internal organs, 4th secondary collisions, from objects inside vehicle, and 5th additional impacts |
| When your patient of a mva is a pediatric what 2 injuries should you assume |
Pulmonary or cardiac |
| if a person takes a deep breath before a crash, they are at risk of what |
a dangerous lung injury |
| if a vehicle is struck from the side then what are the 2 passengers at risk of happening for injury |
the 2 of them hitting each others head on each other. |
| 1 of 3 ejected people will sustain what |
a cervical injury |
| a restrained occupant of a vehicle has nearly a ______ % reduction in fatalities |
45 |
| steering wheel or dashboard injuries sustained because seatbelts were not worn or worn improperly are associated with a ______% fetal death rate |
50 |
| what is the waddell triad |
a pattern of automobile pedestrian injuries in children or short stature people |
| Adult falls from hieghts usually occur in the context of what |
criminal activity, attempted suicide, or intoxication from alcohol or drugs |
| what is the most important factor for the seriousness of a gunshot wound |
the type of tissue through which the projectile passed |
| the initial path of tissue distruction is caused by the projectile crushing the tissue during penetration, is referred to as |
permanent cavity |
| what referrs to the tissue displacement that occurs as the result of low displacement shock waves |
Pathway expansion |
| What is cavitation |
cavity formation |
| What is a major cause of tissue damage as the projectile sends off fragments that create their own seperate paths through tissue |
Missile fragmentation |
| Never assume what of a bullet injury |
that the bullet followed a streight path between the entrance and exit wounds |
| Primary blast injuries are from what |
the blast wave itself |
| secondary blast injuries are from |
flying projectiles |
| tertiary blast injuries are from what |
impact with another object |
| The leading edge of the blast wave is called |
the blast front |
| The phase of an explosion in whicvh there is a pressure front higher then atmospheric pressure |
posative wave pulse |
| the phase of an explosion where the pressure is less then atmospheric |
negative wave pulse |
| what does a shock wave do in under water explosions as compared to air expolsions |
it travels at greater velocity |
| what organs are most susceptibleto pressure changes |
Air-containing organs like the middle ear, lungs and GI tract |
| what are the most common cause of death from blast injuries |
neurologic injuries and head trauma |
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