TNCC EXAM QUESTIONS - - ing score -16 Questions and Ans...

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TNCC EXAM QUESTIONS

Qs and Ans - Expert- Explanation - ing score -16 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: Kinetic Energy

Answer:

KE=1/2mv^2 when mass is doubled, energy is doubled when velocity is doubled, energy is quadrupled

Question 2: Changes to the Pregnant Mother

Answer:

cardio- incr. blood V, resting HR increase 10-20, after 20 wks gestation supine hypotension, incr hormonal can increase vasoD respiratory- incr RR, increase O2 requirements incr hematologic- plasma V incr 30%-50%, incr risk of thromboembolism and DIC etc

Question 3: cavitation

Answer:

because of the high energy associated with high-velocity injuries, cavitation produces crushing, tearing, and shearing injuries.Solid organs, such as the liver are more likely to tear or shear under these forces, whereas air-filled organs such as the lungs can tolerate them more due to their elasticity

Question 4: Newton's Second Law

Answer:

Force = mass x acceleration

Question 5: MVA and their three direct impacts

Answer:

first impact- vehicle hits another object second impact- occupant hits the interior of the vehicle third impact- organs hit other internal structures

Question 6: Haddon Matrix

Answer:

A way of conceptualizing injury prevention strategies based on the phase (pre-event, event, and post-event) and whether the strategy is targeted to the host, the agent (what caused the event), the physical environment, and the socioeconomic environment.

Question 7: Newton's First Law

Answer:

a body at rest will stay at rest unless acted on by an outside force

Question 8: Newton's Third Law

Answer:

For every action there is an equal and opposite reaction

Question 9: blast trauma

Answer:

overpressure- this is the sudden change in atmospheric pressure caused by the blast. This can impact a person via crush forces Dynamic Pressure- This includes the impact of explosive fragments and environmental debris that are displaced by the explosion

Question 10: two types of trauma

Answer:

Blunt trauma Penetrating trauma examples of penetrating- gunshot, impalement, stabbing

Question 11: Blast Trauma Five levels of injury

Answer:

primary- most common with those closest to the blast, most injuries associated with air filled organs secondary- include fragment injuries, puncture wounds, lacerations, and impaled objects. generally- these cause the most casualties tertiary- result from the patient being blown into a large object. injuries include pelvic or femur fractures and thoracic injuries quaternary- result from heat, flame, gas, and smoke and cause burn injuries quinary- the dirty bomb- injuries associated with radioactive, biological, or chemical elements that may be present in the explosion

Question 12: Forms of Energy

Answer:

mechanical, thermal, chemical, electrical, radiant mechanical- the direct impact of an object, such as in a car collision or a pot to the head thermal- the transfer of heat energy, such as a burn from a liquid or hot object like a pot chemical- heat energy from active chemical substances, such as household cleaners or acids electrical- energy transferred from light sockets, power cords, or lightning radiant- energy transferred from a blast, sound waves, radioactivity, or the common sunburn

Question 13: kinematics

Answer:

the study of energy transfer as it applies to identifying or potential injuries

Question 14: Biomechanics

Answer:

is the general study of forces and their effects

Question 15: Law of Conservation of Energy

Answer:

Energy cannot be created or destroyed

Question 16: Mechanism of Injury (MOI)

Answer:

is how external forces are transferred to the body, resulting in injury