quiz 1- Trauma Systems and Mechanisms pt 1

Question 1

An object increases its kinetic energy more by:

Select one:

a. decreasing its speed than by increasing its mass. Incorrect
b. increasing its velocity than by increasing its mass.
c. decreasing its velocity than by decreasing its mass.
d. increasing its mass than by increasing its velocity.

Answer 1

d. increasing its velocity than by increasing its mass.

Question 2

The MOST reliable indicator that significant energy was dissipated by braking before a motor vehicle collision is:

Select one:

a. deformity to the driver’s brake pedal
b. severe damage to the front rims of the tires
c. a trail of debris leading to the site of impact.
d. the presence of tire skid marks at the scene.

Answer 2

d. the presence of tire skid marks at the scene.

Question 3

The third phase of a motor vehicle accident involves:

Select one:

a. crush injuries to the body. Incorrect
b. impact by another vehicle.
c. deceleration of internal organs.
d. injuries caused by flying debris.

Answer 3

c. deceleration of internal organs.

Question 4

Which of the following will be of MOST benefit in helping the paramedic predict the type of injuries that a patient experienced?

Select one:

a. Index of suspicion
b. Past medical history
c. Age of the patient
d. Mechanism of injury

Answer 4

d. Mechanism of injury

Question 5

The initial point of bodily impact when an unrestrained passenger takes the “down-and-under” pathway during a frontal collision is the:

Select one:

a. knees
b. pelvis
c. femurs.
d. abdomen.

Answer 5

a. knees

Question 6

Unlike deceleration injuries, crush and compression injuries occur:

Select one:

a. at the time of impact.
b. before impact occurs.
c. after the initial impact.
d. from penetrating mechanisms.

Answer 6

a. at the time of impact.

Question 7

Penetrating trauma occurs when:

Select one:

a. internal organs are lacerated and bleed profusely.
b. tissues are disrupted by single or multiple objects.
c. blunt force trauma causes explosive open injuries.
d. a fractured rib perforates the parenchyma of a lung.

Answer 7

b. tissues are disrupted by single or multiple objects.

Question 8

Which of the following general statements regarding trauma is correct?

Select one:

a. Bullet impact is less if the energy in the bullet is applied to a small area.
b. The position of the patient at the time of the event is considered to be an internal factor.
c. Blunt trauma is difficult to diagnose by paramedics in the field and is often more lethal than penetrating trauma.
d. Rapidly applied amounts of energy are better tolerated than a similar amount of energy applied over a longer period.

Answer 8

c. Blunt trauma is difficult to diagnose by paramedics in the field and is often more lethal than penetrating trauma.

Question 9

The acute physiologic and structural change that occurs in a patient’s body when an external source of energy dissipates faster than the body’s ability to sustain and deplete it is called:

Select one:

a. injury
b. trauma
c. deceleration
d. kinematics

Answer 9

b. trauma

Question 10

The greatest amount of kinetic energy would be created if a ____-pound driver struck a tree while traveling at ____ mph.

Select one:

a. 140, 50
b. 160, 30
c. 150, 40
d. 170, 30

Answer 10

a. 140, 50

Question 11

The primary reasons for the extent of trauma a patient sustains are the:

Select one:

a. type of object that strikes a patient and the part of the body that sustains the most impact.
b. amount of energy in the object and the mechanism by which the object is delivered to the body.
c. size of the object that strikes the body and any secondary injuries that occur if the patient falls.
d. physical size of the patient and the part of the body that sustains direct impact from an object.

Answer 11

b. amount of energy in the object and the mechanism by which the object is delivered to the body.

Question 12

During abrupt deceleration:

Select one:

a. shearing or rupturing of internal organs can occur.
b. the neck commonly sustains hyperextension injuries.
c. the skull provides excellent protection for the brain.
d. supporting structures of the aorta keep it attached.

Answer 12

a. shearing or rupturing of internal organs can occur.

Question 13

If the windshield of a wrecked vehicle is cracked or broken:

Select one:

a. you should assume that the driver has a severe intracerebral hemorrhage. Incorrect
b. the front seat occupant has a cervical spine injury until proven otherwise.
c. the rear seat passenger was likely thrust from the seat into the windshield.
d. it is likely that the vehicle was traveling at least 55 mph at the time of impact

Answer 13

b. the front seat occupant has a cervical spine injury until proven otherwise.

Question 14

The MOST common site of deceleration injury in the chest is the:

Select one:

a. heart.
b. esophagus.
c. aorta
d. vena cava.

Answer 14

c. aorta

Question 15

Which of the following injury mechanisms would MOST likely result in blunt trauma?

Select one:

a. Small-caliber gunshot wound
b. Explosion involving shards of glass
c. Falling from a tree onto a fence
d. The pressure wave caused by a blast

Answer 15

d. The pressure wave caused by a blast

Question 16

Rapid deceleration of a motor vehicle that is traveling at 60 mph:

Select one:

a. typically generates forces of up to 10 to 20 g.
b. initially causes whiplash injuries to the patient’s neck.
c. dissipates tremendous forces and can cause major injuries.
d. causes the driver’s body to stop moving at the same time.

Answer 16

c. dissipates tremendous forces and can cause major injuries.

Question 17

The energy stored in an object, such as a bridge pillar, is called __________ energy, and the energy from motion is called __________ energy.

Select one:

a. kinetic, potential
b. barometric, kinetic
c. potential, kinetic
d. chemical, potential

Answer 17

c. potential, kinetic

Question 18

The law of conservation of energy states that:

Select one:

a. kinetic energy can be converted only to thermal or chemical energy.
b. the force that an object can exert is the product of its mass multiplied by its acceleration.
c. energy can be neither created nor destroyed; it can only change form.
d. a body at rest will remain at rest unless acted upon by an outside force

Answer 18

c. energy can be neither created nor destroyed; it can only change form.

Question 19

Knowledge of kinetics can help the paramedic:

Select one:

a. predict injury patterns found in a patient.
b. determine which organs have been injured.
c. quantify how much blood a patient has lost.
d. differentiate between medical and trauma patients.

Answer 19

a. predict injury patterns found in a patient.

Question 20

When a patient takes the “up-and-over” pathway during a head-on collision:

Select one:

a. the head takes a higher trajectory, striking the windshield and causing stretching injuries to the neck.
b. secondary injuries as the patient is ejected are often less severe than the primary injuries.
c. the anterior part of the neck may strike the steering wheel, resulting in a fractured larynx
d. injuries to the parietal aspect of the skull are common as the head strikes the side window.

Answer 20

c. the anterior part of the neck may strike the steering wheel, resulting in a fractured larynx