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Flashcards in Trauma Systems/Mechanism Of Injury Deck (25):
0

How many trauma centers are there?

Four

1

Which trauma center offers the greatest range of care?

Level 1 trauma centers

2

What does Newton's first law state?

An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted on by some outside force.

3

What does Newton's second law state?

Force equals mass times acceleration/deceleration

F=M✖️A
F=M✖️D

4

What does Newton's third law state?

For every action, there is an equal and opposite reaction

5

What are three concepts of energy that are typically associated with injury?

Potential energy
Kinetic energy
Work

6

What is the formula for kinetic energy?

(MV^2)/2

Mass times velocity squared divided by 2

7

What causes more damage, the speed of an object or the mass of an object?

The speed has a greater impact

8

What is cavitation?

Formation of a temporary cavity as energy produces particle motion and stretches the tissue surrounding the point of impact.

9

What are the three density categories?

Air
Water
Solid

10

What are two body organs that have air density?

Lungs
Intestinal tract

11

What are four body parts that have water densities?

Vascular system
Liver
Spleen
Muscles

12

What body parts have solid densities and are more easy to splinter and fragment?

Bones

13

What are the three kinds of collisions in a frontal impact involving a motor vehicle?

Collision of car against object (other car,tree,pole)
Collision of passenger against interior of car
Collision of passenger's internal organs against solid structures of the body

14

What are two types of organ injuries from blunt force trauma?

Compression
Changes in velocity

15

In blunt force trauma, how do compression injuries occur?

They occur as organs strike the interior of the body during the initial impact

16

In blunt force trauma, how do changes in velocity injuries occur?

They occur during acceleration as the organs move forward for the first impact and during deceleration as the organs pull against their attachments

17

What is coup-contrecoup?

Damage is done to both sides of an organ as the body moves first in one direction and then in the opposite direction

18

What is the "paper bag effect"?

When the pt sees a crash about to happen and gasps which draws in air into the lungs. On impact the lungs "pop" as if you blew up a paper bag and smashed it against your hand

19

What is the mesentery?

The peritoneal fold that surrounds the small intestine and connects it to the posterior abdominal wall

20

What is the odontoid process?

The toothlike process that extends upward from the axis and about where the atlas rotates

21

What are the three phases of blast injuries?

Primary phase
Secondary phase
Tertiary phase

22

What occurs during the first phase of blast injuries?

The pressure wave of the blast

23

What occurs during the second phase of blast injuries?

Flying debris causes injury

24

What occurs during the third phase of blast injuries?

The patient becomes the flying object