WEST COAST EMT BLOCK 4
ACTUAL EXAM 2026/2027 |
Comprehensive Practice Test | Verified
Q&A | Pass Guaranteed - A+ Graded
SECTION 1: TRAUMA SYSTEMS & MECHANISM OF INJURY
Questions 1-20
Q1. A 28-year-old male motorcycle rider was thrown 30 feet after striking a guardrail. He was
not wearing a helmet. On examination, he has a Glasgow Coma Scale score of 12 and
multiple abrasions. According to ACS-COT trauma triage criteria, which factor MOST
specifically indicates transport to a Level I trauma center?
A. The mechanism of injury involving a motorcycle crash at any speed
B. The presence of a head injury with altered mental status [CORRECT]
C. The distance the patient was thrown from the motorcycle
D. The absence of helmet use during the crash
Correct Answer: B
Rationale: The ACS-COT Field Triage Decision Scheme (Step 2) specifically identifies "GCS
<14" as a physiologic criterion mandating transport to the highest level trauma center
available. While motorcycle crashes (A) and helmet non-use (D) are risk factors, they are
mechanism criteria (Step 3) that require additional assessment. Distance thrown (C) is not a
standalone criterion. Altered mental status indicates potential intracranial injury requiring
neurosurgical capabilities available only at Level I/II centers.
Q2. In the "three collisions" model of motor vehicle trauma, the second collision refers to:
A. The vehicle striking another object (e.g., tree, another vehicle)
B. The occupant striking the interior of the vehicle [CORRECT]
,C. The occupant's internal organs striking the inner body wall
D. The vehicle's front end crumpling on impact
Correct Answer: B
Rationale: The three collisions are: (1) Vehicle vs. object (external collision), (2) Occupant vs.
vehicle interior (internal collision), and (3) Organs vs. body wall/internal structures (visceral
collision). The second collision produces injuries from contact with steering wheels,
dashboards, windshields, or restraint devices. Understanding this kinematic principle helps
predict injury patterns—unrestrained drivers typically impact the steering wheel (chest
trauma), while front passengers impact the dashboard (femur/pelvis fractures).
Q3. Which of the following mechanisms would MOST likely produce shearing injuries to the
brain, mesentery, and thoracic aorta?
A. Direct blunt trauma to the chest with a baseball bat
B. Rapid deceleration without external impact [CORRECT]
C. Penetrating trauma from a knife wound
D. Crush injury from a falling object
Correct Answer: B
Rationale: Shearing injuries result from differential movement between fixed and mobile
structures during rapid deceleration (e.g., high-speed MVC, fall from height). The aorta tears
at the ligamentum arteriosum (fixed point) while the arch moves forward; the brain shears at
the gray-white matter junction; mesenteric vessels tear at fixed points. Direct blunt trauma (A)
causes compression injuries, penetrating trauma (C) causes direct tissue disruption, and
crush injuries (D) cause compression and compartment syndrome—not the differential
acceleration/deceleration forces that produce shearing.
Q4. A 45-year-old construction worker falls 20 feet from scaffolding, landing on his feet. He
complains of bilateral ankle pain but denies back pain. Which injury is MOST commonly
associated with this mechanism?
A. Cervical spine compression fracture
B. Calcaneal fracture with potential lumbar spine injury [CORRECT]
C. Bilateral tibial/fibular fractures
,D. Isolated ankle sprain without other injuries
Correct Answer: B
Rationale: Falls from height landing on feet transmit axial forces through the calcanei
(bilateral calcaneal fractures are pathognomonic) and through the axial skeleton to the
lumbar spine (compression fractures of L1-L3). The absence of back pain does not rule out
spinal injury—EMTs must maintain high suspicion and provide spinal motion restriction.
Isolated ankle injuries (D) are uncommon with significant fall heights; the force typically
causes more proximal injuries or transmits to the spine.
Q5. Regarding air medical transport considerations, which patient would MOST benefit from
helicopter transport versus ground ambulance?
A. A 65-year-old with isolated wrist fracture and 15-minute ground transport time
B. A 34-year-old with 70% total body surface area burns, 45-minute ground transport to burn
center [CORRECT]
C. A 22-year-old with minor abrasions requesting air transport for convenience
D. An 89-year-old with hip fracture and stable vital signs, 10-minute ground transport
Correct Answer: B
Rationale: Air medical transport is indicated when: (1) Time-critical interventions are needed
(burns >20% TBSA require fluid resuscitation and specialized care), (2) Ground transport time
exceeds the "golden hour" for definitive care, and (3) Patient condition warrants advanced
care during extended transport. Major burns (>20% TBSA) benefit from direct transport to burn
centers within the first hour. Short ground times (A, D) or minor injuries (C) do not justify the
risks and costs of air transport, which include weather limitations, landing zone
requirements, and crew exposure risks.
Q6. A 19-year-old restrained driver was in a frontal collision at 45 mph. The airbag deployed.
She complains of chest pain and dyspnea. Which injury is MOST consistent with the "third
collision" (visceral collision)?
A. Sternum fracture from airbag deployment
B. Cardiac contusion from impact with steering wheel
C. Aortic tear from deceleration forces [CORRECT]
, D. Rib fractures from seatbelt compression
Correct Answer: C
Rationale: The third collision involves internal organs moving within body cavities due to
inertia. The heart and aorta continue moving forward while the chest wall decelerates,
causing shear forces at the aortic isthmus (ligamentum arteriosum). This produces the
classic traumatic aortic disruption. While cardiac contusion (B) and rib fractures (D) are
serious, they result from the second collision (occupant vs. interior). The third collision
specifically refers to internal organ movement producing shear injuries, with aortic tear being
the most lethal example.
Q7. Which of the following is NOT a criterion for transport to a trauma center according to
the 2026 ACS-COT Field Triage Decision Scheme?
A. Systolic blood pressure <90 mmHg in adults
B. Respiratory rate <10 or >29 breaths per minute
C. Glasgow Coma Scale score of 14 [CORRECT]
D. Penetrating injuries to head, neck, torso, or extremities proximal to elbow/knee
Correct Answer: C
Rationale: The ACS-COT criteria specify GCS <14 (not ≤14) as a physiologic criterion
requiring trauma center transport. A GCS of 14 does not meet the threshold. Systolic BP <90
(A), respiratory rate extremes (B), and penetrating torso/proximal extremity injuries (D) are all
explicit criteria in Steps 1-3 of the decision scheme. Understanding the specific thresholds is
critical—GCS 13 or below indicates significant head injury requiring neurosurgical
capabilities.
Q8. Cavitation in ballistics trauma refers to:
A. The permanent destruction of tissue along the bullet's path
B. The temporary displacement of tissue creating a pressure wave [CORRECT]
C. The fragmentation of the projectile upon impact
D. The thermal injury caused by bullet friction
Correct Answer: B
ACTUAL EXAM 2026/2027 |
Comprehensive Practice Test | Verified
Q&A | Pass Guaranteed - A+ Graded
SECTION 1: TRAUMA SYSTEMS & MECHANISM OF INJURY
Questions 1-20
Q1. A 28-year-old male motorcycle rider was thrown 30 feet after striking a guardrail. He was
not wearing a helmet. On examination, he has a Glasgow Coma Scale score of 12 and
multiple abrasions. According to ACS-COT trauma triage criteria, which factor MOST
specifically indicates transport to a Level I trauma center?
A. The mechanism of injury involving a motorcycle crash at any speed
B. The presence of a head injury with altered mental status [CORRECT]
C. The distance the patient was thrown from the motorcycle
D. The absence of helmet use during the crash
Correct Answer: B
Rationale: The ACS-COT Field Triage Decision Scheme (Step 2) specifically identifies "GCS
<14" as a physiologic criterion mandating transport to the highest level trauma center
available. While motorcycle crashes (A) and helmet non-use (D) are risk factors, they are
mechanism criteria (Step 3) that require additional assessment. Distance thrown (C) is not a
standalone criterion. Altered mental status indicates potential intracranial injury requiring
neurosurgical capabilities available only at Level I/II centers.
Q2. In the "three collisions" model of motor vehicle trauma, the second collision refers to:
A. The vehicle striking another object (e.g., tree, another vehicle)
B. The occupant striking the interior of the vehicle [CORRECT]
,C. The occupant's internal organs striking the inner body wall
D. The vehicle's front end crumpling on impact
Correct Answer: B
Rationale: The three collisions are: (1) Vehicle vs. object (external collision), (2) Occupant vs.
vehicle interior (internal collision), and (3) Organs vs. body wall/internal structures (visceral
collision). The second collision produces injuries from contact with steering wheels,
dashboards, windshields, or restraint devices. Understanding this kinematic principle helps
predict injury patterns—unrestrained drivers typically impact the steering wheel (chest
trauma), while front passengers impact the dashboard (femur/pelvis fractures).
Q3. Which of the following mechanisms would MOST likely produce shearing injuries to the
brain, mesentery, and thoracic aorta?
A. Direct blunt trauma to the chest with a baseball bat
B. Rapid deceleration without external impact [CORRECT]
C. Penetrating trauma from a knife wound
D. Crush injury from a falling object
Correct Answer: B
Rationale: Shearing injuries result from differential movement between fixed and mobile
structures during rapid deceleration (e.g., high-speed MVC, fall from height). The aorta tears
at the ligamentum arteriosum (fixed point) while the arch moves forward; the brain shears at
the gray-white matter junction; mesenteric vessels tear at fixed points. Direct blunt trauma (A)
causes compression injuries, penetrating trauma (C) causes direct tissue disruption, and
crush injuries (D) cause compression and compartment syndrome—not the differential
acceleration/deceleration forces that produce shearing.
Q4. A 45-year-old construction worker falls 20 feet from scaffolding, landing on his feet. He
complains of bilateral ankle pain but denies back pain. Which injury is MOST commonly
associated with this mechanism?
A. Cervical spine compression fracture
B. Calcaneal fracture with potential lumbar spine injury [CORRECT]
C. Bilateral tibial/fibular fractures
,D. Isolated ankle sprain without other injuries
Correct Answer: B
Rationale: Falls from height landing on feet transmit axial forces through the calcanei
(bilateral calcaneal fractures are pathognomonic) and through the axial skeleton to the
lumbar spine (compression fractures of L1-L3). The absence of back pain does not rule out
spinal injury—EMTs must maintain high suspicion and provide spinal motion restriction.
Isolated ankle injuries (D) are uncommon with significant fall heights; the force typically
causes more proximal injuries or transmits to the spine.
Q5. Regarding air medical transport considerations, which patient would MOST benefit from
helicopter transport versus ground ambulance?
A. A 65-year-old with isolated wrist fracture and 15-minute ground transport time
B. A 34-year-old with 70% total body surface area burns, 45-minute ground transport to burn
center [CORRECT]
C. A 22-year-old with minor abrasions requesting air transport for convenience
D. An 89-year-old with hip fracture and stable vital signs, 10-minute ground transport
Correct Answer: B
Rationale: Air medical transport is indicated when: (1) Time-critical interventions are needed
(burns >20% TBSA require fluid resuscitation and specialized care), (2) Ground transport time
exceeds the "golden hour" for definitive care, and (3) Patient condition warrants advanced
care during extended transport. Major burns (>20% TBSA) benefit from direct transport to burn
centers within the first hour. Short ground times (A, D) or minor injuries (C) do not justify the
risks and costs of air transport, which include weather limitations, landing zone
requirements, and crew exposure risks.
Q6. A 19-year-old restrained driver was in a frontal collision at 45 mph. The airbag deployed.
She complains of chest pain and dyspnea. Which injury is MOST consistent with the "third
collision" (visceral collision)?
A. Sternum fracture from airbag deployment
B. Cardiac contusion from impact with steering wheel
C. Aortic tear from deceleration forces [CORRECT]
, D. Rib fractures from seatbelt compression
Correct Answer: C
Rationale: The third collision involves internal organs moving within body cavities due to
inertia. The heart and aorta continue moving forward while the chest wall decelerates,
causing shear forces at the aortic isthmus (ligamentum arteriosum). This produces the
classic traumatic aortic disruption. While cardiac contusion (B) and rib fractures (D) are
serious, they result from the second collision (occupant vs. interior). The third collision
specifically refers to internal organ movement producing shear injuries, with aortic tear being
the most lethal example.
Q7. Which of the following is NOT a criterion for transport to a trauma center according to
the 2026 ACS-COT Field Triage Decision Scheme?
A. Systolic blood pressure <90 mmHg in adults
B. Respiratory rate <10 or >29 breaths per minute
C. Glasgow Coma Scale score of 14 [CORRECT]
D. Penetrating injuries to head, neck, torso, or extremities proximal to elbow/knee
Correct Answer: C
Rationale: The ACS-COT criteria specify GCS <14 (not ≤14) as a physiologic criterion
requiring trauma center transport. A GCS of 14 does not meet the threshold. Systolic BP <90
(A), respiratory rate extremes (B), and penetrating torso/proximal extremity injuries (D) are all
explicit criteria in Steps 1-3 of the decision scheme. Understanding the specific thresholds is
critical—GCS 13 or below indicates significant head injury requiring neurosurgical
capabilities.
Q8. Cavitation in ballistics trauma refers to:
A. The permanent destruction of tissue along the bullet's path
B. The temporary displacement of tissue creating a pressure wave [CORRECT]
C. The fragmentation of the projectile upon impact
D. The thermal injury caused by bullet friction
Correct Answer: B
