EmtKinematics

EmtKinematics - KINEMATICS An Introduction to the Physics...

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KINEMATICS An Introduction to the Physics of Trauma

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Trauma Statistics 100,000 trauma deaths/year One-third are preventable Unnecessary deaths often caused by injuries missed because of low index of suspicion Raise index of suspicion by evaluating scene as well as patient
Kinematics Physics of Trauma Prediction of injuries based on forces, motion involved in injury event

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Physical Principles Kinetic Energy Newton’s First Law of Motion Law of Conservation of Energy
Kinetic Energy Energy of motion K.E. = 1/2 mass x velocity 2 Major factor = Velocity “Speed Kills”

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Newton’s First Law of Motion Body in motion stays in motion unless acted on by outside force Body at rest stays at rest unless acted on by outside force
Law of Conservation of Energy Energy cannot be created or destroyed Only changed from one form to another

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Conclusions When moving body is acted on by an outside force and changes its motion, Kinetic energy must change to some other form of energy. If the moving body is a human and the energy transfer occurs too rapidly, Trauma results.
Types of Trauma Penetrating Blunt Deceleration Compression

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Motor Vehicle Collisions Five major types Head-on Rear-end Lateral Rotational Roll-over
Motor Vehicle Collisions In each collision, three impacts occur: Vehicle Occupants Occupant organs

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Head-on Collision Vehicle stops Occupants continue forward Two pathways Down and under Up and over
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This note was uploaded on 12/21/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.

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EmtKinematics - KINEMATICS An Introduction to the Physics...

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