PHTLS 10TH EDITION POST TEST 2026/2027 | Updated
Questions & Verified Answers | Trauma Life Support Final
Assessment | Pass Guaranteed - A+ Graded
DOMAIN 1: Scene Safety and Kinematics of Trauma
Q1: You are dispatched to a motor vehicle collision on the interstate. Dispatch reports a
single vehicle that left the roadway and struck a tree head-on at highway speed. Upon
arrival, you observe a midsize sedan with severe front-end damage, the tree embedded
in the engine compartment, and a deployed airbag with white powder residue. The driver
is seated, conscious, and gripping their chest. Bystanders report the vehicle "spun
around" before impact. Based on the mechanism of injury, which injury pattern should
you anticipate as the highest priority?
A. Lumbar spine compression fracture from vertical loading
B. Bilateral femur fractures from dashboard intrusion
C. Traumatic aortic disruption from rapid deceleration [CORRECT]
D. Isolated closed head injury from lateral impact
Correct Answer: C
Rationale: This scenario presents a high-energy deceleration mechanism with classic
findings for traumatic aortic injury: frontal impact at high speed, head-on collision with
fixed object (tree), and rapid deceleration forces. The "spun around" report suggests
complex vector forces. Traumatic aortic disruption occurs because the relatively mobile
descending aorta continues moving forward while the fixed arch decelerates with the
chest, creating shear forces at the ligamentum arteriosum. This is immediately
life-threatening and often presents with subtle initial symptoms (chest pain, dyspnea)
before catastrophic rupture.
,Option A (lumbar spine fracture) typically occurs with vertical compression
mechanisms (falls, roof impacts) or flexion-distraction injuries, not primarily
deceleration. Option B (bilateral femur fractures) would require significant dashboard
intrusion with posterior displacement, which is possible but less immediately lethal than
aortic injury. Option D (isolated closed head injury) is less likely given the frontal impact
and airbag deployment (which reduces but doesn't eliminate head injury risk); the
"isolated" descriptor is particularly problematic as multi-system trauma is expected in
this mechanism.
CLINICAL PEARL: In frontal deceleration collisions >35 mph with fixed object impact,
always suspect traumatic aortic injury even with minimal external signs. The mortality
for untreated traumatic aortic rupture approaches 90% within 24 hours. Early
recognition, permissive hypotension, and rapid transport to a trauma center with
vascular surgery capabilities are critical.
Q2: You respond to an explosion at an industrial facility. On scene, you encounter
multiple patients with varying presentations. Patient A is unconscious with obvious
traumatic amputation of both legs, bleeding profusely. Patient B is ambulatory,
complaining of hearing loss and ringing in the ears, with superficial shrapnel wounds to
the arms. Patient C is seated against a wall, dyspneic, with chest burns and singed
nasal hairs. Patient D is deceased with massive head trauma. Using the SALT triage
system, what is the correct categorization?
A. Patient A: Immediate; Patient B: Delayed; Patient C: Delayed; Patient D: Deceased
B. Patient A: Immediate; Patient B: Minor; Patient C: Immediate; Patient D: Deceased
[CORRECT]
C. Patient A: Expectant; Patient B: Minor; Patient C: Immediate; Patient D: Deceased
D. Patient A: Immediate; Patient B: Delayed; Patient C: Delayed; Patient D: Expectant
Correct Answer: B
,Rationale: SALT (Sort, Assess, Lifesaving Interventions, Treatment/Transport) triage
categorization:
Patient A (bilateral amputations with hemorrhage): Immediate (Red) - requires
immediate hemorrhage control and resuscitation, salvageable with rapid intervention.
Not expectant (C) because the injuries are survivable with proper care.
Patient B (ambulatory, hearing loss, superficial wounds): Minor (Green) - can ambulate,
injuries are not life-threatening despite mechanism. Hearing loss/tinnitus indicates
blast exposure but doesn't change triage category in the immediate phase. "Delayed" (A,
D) is incorrect because ambulatory patients are automatically Minor in SALT/START
systems.
Patient C (dyspneic, chest burns, singed nasal hairs): Immediate (Red) -
airway/inhalation injury with respiratory compromise requires immediate intervention.
This is not "Delayed" (A, D) because respiratory distress in a blast victim suggests
potential blast lung or airway compromise that will deteriorate.
Patient D (deceased): Correctly identified as Deceased/Black in all options. "Expectant"
(D) is incorrect terminology for obviously dead patients.
CLINICAL PEARL: In blast injuries, the combination of external burns and singed nasal
hairs strongly suggests inhalation injury and potential blast lung. These patients can
deteriorate rapidly due to airway edema and pulmonary contusion. Early aggressive
airway management and positive pressure ventilation may be required despite initially
stable appearance.
Q3: You are approaching a scene at night involving a motorcycle collision. The rider is
lying supine in the roadway, approximately 50 feet from the motorcycle which shows
significant damage. You observe a pool of dark blood near the patient's head. Before
, patient contact, which action represents the highest priority according to PHTLS scene
safety principles?
A. Rapidly approach the patient to control the obvious head wound bleeding
B. Establish scene safety by positioning the ambulance to block traffic, donning
appropriate PPE, and assessing for environmental hazards [CORRECT]
C. Immediately begin spinal motion restriction with manual stabilization
D. Call for air medical transport given the mechanism
Correct Answer: B
Rationale: PHTLS emphasizes that scene safety is the absolute first priority before any
patient care. The scenario presents multiple hazards: nighttime visibility, traffic
exposure (patient in roadway), potential for body fluids (blood pool), and unknown
environmental dangers (fuel from motorcycle, traffic from both directions).
Option A violates scene safety principles—rushing to the patient without securing the
scene endangers the provider. The 50-foot displacement suggests high-energy
mechanism, and the patient is in a traffic lane. Option C (spinal motion restriction) is a
patient care intervention that occurs after scene safety and primary survey. Option D (air
medical request) is a transport decision made after patient assessment.
Proper scene safety includes: PPE (gloves minimum, eye protection, high-visibility
clothing), scene control (vehicle positioning, traffic cones/flares, law enforcement
assistance), hazard identification (fuel, fire, electricity, unstable vehicles), and situational
awareness (bystander aggression, secondary collisions).
CLINICAL PEARL: The "S" in X-ABCDE stands for Safety—your safety, your partner's
safety, bystander safety, and then patient safety. No patient care benefit outweighs
provider injury. Secondary collisions at trauma scenes are a leading cause of EMS
provider fatalities. Always establish a safe work zone before patient contact.
Questions & Verified Answers | Trauma Life Support Final
Assessment | Pass Guaranteed - A+ Graded
DOMAIN 1: Scene Safety and Kinematics of Trauma
Q1: You are dispatched to a motor vehicle collision on the interstate. Dispatch reports a
single vehicle that left the roadway and struck a tree head-on at highway speed. Upon
arrival, you observe a midsize sedan with severe front-end damage, the tree embedded
in the engine compartment, and a deployed airbag with white powder residue. The driver
is seated, conscious, and gripping their chest. Bystanders report the vehicle "spun
around" before impact. Based on the mechanism of injury, which injury pattern should
you anticipate as the highest priority?
A. Lumbar spine compression fracture from vertical loading
B. Bilateral femur fractures from dashboard intrusion
C. Traumatic aortic disruption from rapid deceleration [CORRECT]
D. Isolated closed head injury from lateral impact
Correct Answer: C
Rationale: This scenario presents a high-energy deceleration mechanism with classic
findings for traumatic aortic injury: frontal impact at high speed, head-on collision with
fixed object (tree), and rapid deceleration forces. The "spun around" report suggests
complex vector forces. Traumatic aortic disruption occurs because the relatively mobile
descending aorta continues moving forward while the fixed arch decelerates with the
chest, creating shear forces at the ligamentum arteriosum. This is immediately
life-threatening and often presents with subtle initial symptoms (chest pain, dyspnea)
before catastrophic rupture.
,Option A (lumbar spine fracture) typically occurs with vertical compression
mechanisms (falls, roof impacts) or flexion-distraction injuries, not primarily
deceleration. Option B (bilateral femur fractures) would require significant dashboard
intrusion with posterior displacement, which is possible but less immediately lethal than
aortic injury. Option D (isolated closed head injury) is less likely given the frontal impact
and airbag deployment (which reduces but doesn't eliminate head injury risk); the
"isolated" descriptor is particularly problematic as multi-system trauma is expected in
this mechanism.
CLINICAL PEARL: In frontal deceleration collisions >35 mph with fixed object impact,
always suspect traumatic aortic injury even with minimal external signs. The mortality
for untreated traumatic aortic rupture approaches 90% within 24 hours. Early
recognition, permissive hypotension, and rapid transport to a trauma center with
vascular surgery capabilities are critical.
Q2: You respond to an explosion at an industrial facility. On scene, you encounter
multiple patients with varying presentations. Patient A is unconscious with obvious
traumatic amputation of both legs, bleeding profusely. Patient B is ambulatory,
complaining of hearing loss and ringing in the ears, with superficial shrapnel wounds to
the arms. Patient C is seated against a wall, dyspneic, with chest burns and singed
nasal hairs. Patient D is deceased with massive head trauma. Using the SALT triage
system, what is the correct categorization?
A. Patient A: Immediate; Patient B: Delayed; Patient C: Delayed; Patient D: Deceased
B. Patient A: Immediate; Patient B: Minor; Patient C: Immediate; Patient D: Deceased
[CORRECT]
C. Patient A: Expectant; Patient B: Minor; Patient C: Immediate; Patient D: Deceased
D. Patient A: Immediate; Patient B: Delayed; Patient C: Delayed; Patient D: Expectant
Correct Answer: B
,Rationale: SALT (Sort, Assess, Lifesaving Interventions, Treatment/Transport) triage
categorization:
Patient A (bilateral amputations with hemorrhage): Immediate (Red) - requires
immediate hemorrhage control and resuscitation, salvageable with rapid intervention.
Not expectant (C) because the injuries are survivable with proper care.
Patient B (ambulatory, hearing loss, superficial wounds): Minor (Green) - can ambulate,
injuries are not life-threatening despite mechanism. Hearing loss/tinnitus indicates
blast exposure but doesn't change triage category in the immediate phase. "Delayed" (A,
D) is incorrect because ambulatory patients are automatically Minor in SALT/START
systems.
Patient C (dyspneic, chest burns, singed nasal hairs): Immediate (Red) -
airway/inhalation injury with respiratory compromise requires immediate intervention.
This is not "Delayed" (A, D) because respiratory distress in a blast victim suggests
potential blast lung or airway compromise that will deteriorate.
Patient D (deceased): Correctly identified as Deceased/Black in all options. "Expectant"
(D) is incorrect terminology for obviously dead patients.
CLINICAL PEARL: In blast injuries, the combination of external burns and singed nasal
hairs strongly suggests inhalation injury and potential blast lung. These patients can
deteriorate rapidly due to airway edema and pulmonary contusion. Early aggressive
airway management and positive pressure ventilation may be required despite initially
stable appearance.
Q3: You are approaching a scene at night involving a motorcycle collision. The rider is
lying supine in the roadway, approximately 50 feet from the motorcycle which shows
significant damage. You observe a pool of dark blood near the patient's head. Before
, patient contact, which action represents the highest priority according to PHTLS scene
safety principles?
A. Rapidly approach the patient to control the obvious head wound bleeding
B. Establish scene safety by positioning the ambulance to block traffic, donning
appropriate PPE, and assessing for environmental hazards [CORRECT]
C. Immediately begin spinal motion restriction with manual stabilization
D. Call for air medical transport given the mechanism
Correct Answer: B
Rationale: PHTLS emphasizes that scene safety is the absolute first priority before any
patient care. The scenario presents multiple hazards: nighttime visibility, traffic
exposure (patient in roadway), potential for body fluids (blood pool), and unknown
environmental dangers (fuel from motorcycle, traffic from both directions).
Option A violates scene safety principles—rushing to the patient without securing the
scene endangers the provider. The 50-foot displacement suggests high-energy
mechanism, and the patient is in a traffic lane. Option C (spinal motion restriction) is a
patient care intervention that occurs after scene safety and primary survey. Option D (air
medical request) is a transport decision made after patient assessment.
Proper scene safety includes: PPE (gloves minimum, eye protection, high-visibility
clothing), scene control (vehicle positioning, traffic cones/flares, law enforcement
assistance), hazard identification (fuel, fire, electricity, unstable vehicles), and situational
awareness (bystander aggression, secondary collisions).
CLINICAL PEARL: The "S" in X-ABCDE stands for Safety—your safety, your partner's
safety, bystander safety, and then patient safety. No patient care benefit outweighs
provider injury. Secondary collisions at trauma scenes are a leading cause of EMS
provider fatalities. Always establish a safe work zone before patient contact.
