TNCC 8th Edition: Questions with 100% Correct Answers |
Trauma Nursing Core Course (2026/2027 Edition)
SECTION 1: Trauma Systems, Kinematics, and Injury Prevention
Question 1.
A 22-year-old male is brought to the emergency department after a high-speed motor
vehicle collision. The nurse observes that the patient was the unrestrained driver of a
vehicle that struck a stationary object. Based on the kinematics of trauma, which
mechanism is MOST likely responsible for the patient's closed head injury?
A. Direct impact of the head against the windshield
B. Deceleration forces causing the brain to move within the cranial vault
C. Compression forces transmitted through the cervical spine
D. Shearing forces from the steering wheel impact
Correct Answer: B. Deceleration forces causing the brain to move within the cranial vault
Rationale: In a high-speed motor vehicle collision where the vehicle strikes a stationary
object, the primary mechanism of closed head injury is deceleration. When the vehicle
suddenly stops, the brain continues to move forward within the cranial vault due to
inertia, then rebounds against the posterior skull. This coup-contrecoup mechanism is a
hallmark of deceleration injuries in unrestrained occupants. While direct impact (A) can
occur, the classic closed head injury in this scenario is caused by the differential
movement of the brain within the skull. Compression forces through the cervical spine
(C) are more associated with axial loading injuries. Shearing forces from the steering
wheel (D) typically cause chest or abdominal injuries rather than primary closed head
injuries.
Question 2.
,A trauma nurse is reviewing injury prevention strategies as part of a community
outreach program. According to the Haddon Matrix, which intervention represents a
"pre-event" strategy for reducing motor vehicle collision injuries?
A. Installing airbags in vehicles
B. Providing rapid extrication training for EMS personnel
C. Establishing trauma center verification standards
D. Implementing rehabilitation programs for crash survivors
Correct Answer: A. Installing airbags in vehicles
Rationale: The Haddon Matrix organizes injury prevention strategies across three
phases (pre-event, event, and post-event) and three factors (host, agent, and
environment). Installing airbags is a pre-event strategy that reduces the likelihood or
severity of injury before the collision occurs by modifying the agent (vehicle). Rapid
extrication training (B) is a post-event strategy focused on the host. Trauma center
verification (C) is a post-event environmental strategy. Rehabilitation programs (D) are
post-event host strategies. The TNCC 8th Edition emphasizes understanding the
Haddon Matrix as a framework for systematic injury prevention.
Question 3.
During a trauma team activation, the charge nurse notes that the patient was injured
when their motorcycle struck a guardrail at 45 mph. The patient was ejected and landed
on the pavement. Which kinematic principle BEST explains why ejection from a
motorcycle significantly increases the risk of multisystem trauma?
A. The patient experiences only rotational forces during ejection
B. Ejection eliminates the protective effect of the motorcycle and exposes the patient to
multiple sequential impacts
C. Ejection primarily causes compression injuries to the lower extremities
D. The motorcycle absorbs all kinetic energy during the collision, sparing the patient
, Correct Answer: B. Ejection eliminates the protective effect of the motorcycle and
exposes the patient to multiple sequential impacts
Rationale: Ejection from a motorcycle is associated with a significantly higher risk of
severe and multisystem trauma because the rider loses the protective frame of the
motorcycle and is subjected to multiple impacts with the ground, guardrail, or other
objects. This creates sequential trauma mechanisms including deceleration, direct
impact, and possible penetration. Rotational forces (A) are only one component.
Compression injuries to lower extremities (C) are not the primary concern in ejection.
The motorcycle does not absorb all kinetic energy (D); in fact, ejection means the rider
must absorb the energy through their own body.
Question 4.
A trauma patient is brought in after a fall from a height. The nurse understands that the
severity of injury from a vertical fall is MOST directly related to which factor?
A. The patient's body mass index
B. The distance fallen and the surface struck
C. The patient's age and pre-existing conditions
D. The time of day the fall occurred
Correct Answer: B. The distance fallen and the surface struck
Rationale: According to the kinematics of trauma, the severity of injury from a vertical
fall is primarily determined by the distance fallen (which determines the velocity at
impact) and the surface struck (which determines how rapidly deceleration occurs and
how energy is dissipated). While BMI (A), age, and comorbidities (C) can influence the
patient's ability to tolerate injury, they do not determine the energy transfer and
mechanism of injury. Time of day (D) is irrelevant to the physics of energy transfer.
Trauma Nursing Core Course (2026/2027 Edition)
SECTION 1: Trauma Systems, Kinematics, and Injury Prevention
Question 1.
A 22-year-old male is brought to the emergency department after a high-speed motor
vehicle collision. The nurse observes that the patient was the unrestrained driver of a
vehicle that struck a stationary object. Based on the kinematics of trauma, which
mechanism is MOST likely responsible for the patient's closed head injury?
A. Direct impact of the head against the windshield
B. Deceleration forces causing the brain to move within the cranial vault
C. Compression forces transmitted through the cervical spine
D. Shearing forces from the steering wheel impact
Correct Answer: B. Deceleration forces causing the brain to move within the cranial vault
Rationale: In a high-speed motor vehicle collision where the vehicle strikes a stationary
object, the primary mechanism of closed head injury is deceleration. When the vehicle
suddenly stops, the brain continues to move forward within the cranial vault due to
inertia, then rebounds against the posterior skull. This coup-contrecoup mechanism is a
hallmark of deceleration injuries in unrestrained occupants. While direct impact (A) can
occur, the classic closed head injury in this scenario is caused by the differential
movement of the brain within the skull. Compression forces through the cervical spine
(C) are more associated with axial loading injuries. Shearing forces from the steering
wheel (D) typically cause chest or abdominal injuries rather than primary closed head
injuries.
Question 2.
,A trauma nurse is reviewing injury prevention strategies as part of a community
outreach program. According to the Haddon Matrix, which intervention represents a
"pre-event" strategy for reducing motor vehicle collision injuries?
A. Installing airbags in vehicles
B. Providing rapid extrication training for EMS personnel
C. Establishing trauma center verification standards
D. Implementing rehabilitation programs for crash survivors
Correct Answer: A. Installing airbags in vehicles
Rationale: The Haddon Matrix organizes injury prevention strategies across three
phases (pre-event, event, and post-event) and three factors (host, agent, and
environment). Installing airbags is a pre-event strategy that reduces the likelihood or
severity of injury before the collision occurs by modifying the agent (vehicle). Rapid
extrication training (B) is a post-event strategy focused on the host. Trauma center
verification (C) is a post-event environmental strategy. Rehabilitation programs (D) are
post-event host strategies. The TNCC 8th Edition emphasizes understanding the
Haddon Matrix as a framework for systematic injury prevention.
Question 3.
During a trauma team activation, the charge nurse notes that the patient was injured
when their motorcycle struck a guardrail at 45 mph. The patient was ejected and landed
on the pavement. Which kinematic principle BEST explains why ejection from a
motorcycle significantly increases the risk of multisystem trauma?
A. The patient experiences only rotational forces during ejection
B. Ejection eliminates the protective effect of the motorcycle and exposes the patient to
multiple sequential impacts
C. Ejection primarily causes compression injuries to the lower extremities
D. The motorcycle absorbs all kinetic energy during the collision, sparing the patient
, Correct Answer: B. Ejection eliminates the protective effect of the motorcycle and
exposes the patient to multiple sequential impacts
Rationale: Ejection from a motorcycle is associated with a significantly higher risk of
severe and multisystem trauma because the rider loses the protective frame of the
motorcycle and is subjected to multiple impacts with the ground, guardrail, or other
objects. This creates sequential trauma mechanisms including deceleration, direct
impact, and possible penetration. Rotational forces (A) are only one component.
Compression injuries to lower extremities (C) are not the primary concern in ejection.
The motorcycle does not absorb all kinetic energy (D); in fact, ejection means the rider
must absorb the energy through their own body.
Question 4.
A trauma patient is brought in after a fall from a height. The nurse understands that the
severity of injury from a vertical fall is MOST directly related to which factor?
A. The patient's body mass index
B. The distance fallen and the surface struck
C. The patient's age and pre-existing conditions
D. The time of day the fall occurred
Correct Answer: B. The distance fallen and the surface struck
Rationale: According to the kinematics of trauma, the severity of injury from a vertical
fall is primarily determined by the distance fallen (which determines the velocity at
impact) and the surface struck (which determines how rapidly deceleration occurs and
how energy is dissipated). While BMI (A), age, and comorbidities (C) can influence the
patient's ability to tolerate injury, they do not determine the energy transfer and
mechanism of injury. Time of day (D) is irrelevant to the physics of energy transfer.
