TNCC FINAL EXAM TEST OPEN BOOK 2026 ACTUAL EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS/NEWEST UPDATE!!!
Question 1
Why is a measure of serum lactate obtained in the initial assessment of the trauma patient?
A) To measure the effectiveness of oxygenation and ventilation
B) To quantify the base deficit for the adequacy of cellular perfusion
C) To gauge end-organ perfusion and tissue hypoxia
D) To determine the underlying cause of obstructive shock
E) To assess the patient's nutritional status post-injury
Correct Answer: C) To gauge end-organ perfusion and tissue hypoxia
Rationale: Serum lactate is a byproduct of anaerobic metabolism. In trauma, elevated levels
indicate that tissues are not receiving enough oxygen (hypoxia), leading to anaerobic
metabolism. It serves as a sensitive indicator of the adequacy of resuscitation and end-
organ perfusion even when vital signs appear stable.
Question 2
A trauma patient is restless and repeatedly asking "where am I?" Vital signs upon arrival: BP
100/60, HR 96, RR 24. Current vital signs: BP 104/84, HR 108, RR 28. The patient’s skin is cool
and dry. This patient is in which stage of shock?
A) Compensated
B) Progressive
C) Irreversible
D) Decompensated
E) Refractory
Correct Answer: A) Compensated
Rationale: In compensated shock, the body’s homeostatic mechanisms (such as the release
of catecholamines) attempt to maintain cardiac output and blood pressure. Indicators
include a slightly elevated heart rate, increased respiratory rate, and a narrowing pulse
pressure (the difference between systolic and diastolic). The systolic pressure is often
maintained within normal limits during this stage.
Question 3
An elderly patient with a history of anticoagulant use presents after a fall at home. She denies
loss of consciousness but has a forehead hematoma, headache, dizziness, and nausea. Which is
the most likely cause?
A) Epidural hematoma
B) Diffuse axonal injury
C) Post-concussive syndrome
D) Subdural hematoma
E) Intracerebral hemorrhage
Correct Answer: D) Subdural hematoma
Rationale: Subdural hematomas are caused by the tearing of bridging veins and are
, 2
common in the elderly due to brain atrophy, which puts tension on those veins.
Anticoagulant use significantly increases the risk. Symptoms often develop more slowly
than an epidural hematoma (which is usually arterial), but nausea, headache, and dizziness
following a fall are classic indicators.
Question 4
EMS brings a patient who fell while riding a bicycle. Using the American College of Surgeons
screening guidelines, which assessment finding requires radiologic spine clearance?
A) Alert and oriented with no neurologic deficits
B) Multiple abrasions to the upper extremities
C) Multiple requests for water
D) Smell of alcohol on breath
E) Presence of a helmet during the impact
Correct Answer: D) Smell of alcohol on breath
Rationale: The presence of "distracting injuries" or "altered mental status" (including
intoxication) prevents a clinician from reliably clearing a patient’s spine through physical
examination alone. Alcohol can mask the pain of a spinal injury; therefore, radiologic
clearance is required.
Question 5
Which of the following occurs during the third impact of a motor vehicle crash?
A) The driver of the vehicle collides with the steering wheel
B) The vehicle collides with a stationary object like a tree
C) The internal organs (e.g., aorta) collide with the body’s structures
D) The airbag deploys and strikes the passenger
E) The loose objects in the car strike the occupants
Correct Answer: C) The internal organs (e.g., aorta) collide with the body’s structures
Rationale: A motor vehicle crash involves three impacts: 1) The vehicle hits an object. 2)
The occupant hits the interior of the vehicle. 3) The internal organs hit the internal
structures of the body (deceleration injury). A common example is the aorta tearing at the
ligamentum arteriosum.
Question 6
A passenger in a high-speed MVC is brought to a rural ED. If significant abdominal and pelvic
injuries are noted in the primary survey, which is the priority intervention?
A) Initiate transfer to a trauma center
B) Provide a detailed report to the operating room nurse
C) Obtain comprehensive CT imaging of the head and spine
D) Place a gastric tube for decompression
E) Perform a diagnostic peritoneal lavage (DPL)
Correct Answer: A) Initiate transfer to a trauma center
, 3
Rationale: Rural or non-trauma hospitals often lack the surgical resources to manage
massive internal hemorrhage or complex pelvic fractures. Once life-threatening injuries
are identified in the primary survey, the priority is to move the patient to a definitive care
facility (Trauma Center).
Question 7
Which of the following traumatic injuries is LEAST likely to be promptly identified during the
initial assessment?
A) Spleen laceration
B) Lung contusion
C) Bowel injury
D) Brain hematoma
E) Rib fractures
Correct Answer: C) Bowel injury
Rationale: Bowel injuries often present subtly and may not show significant fluid or signs on
initial FAST exams or physical assessments. Sepsis or peritonitis from a hollow-viscus
injury may take hours to manifest, whereas solid organ bleeds (spleen) or lung injuries
show symptoms more rapidly.
Question 8
Patients with a significant crush injury should be monitored closely for which of the following
complications?
A) Hypernatremia
B) Hypercalcemia
C) Dysrhythmias
D) Polyuria
E) Hypokalemia
Correct Answer: C) Dysrhythmias
Rationale: Crush injuries cause Rhabdomyolysis, leading to the release of intracellular
contents like potassium (hyperkalemia) and myoglobin into the bloodstream.
Hyperkalemia is a direct cause of lethal cardiac dysrhythmias.
Question 9
What physical assessment finding raises immediate suspicion of a complete spinal cord injury?
A) Weakness in the lower extremities
B) Priapism
C) Voluntary anal sphincter tone
D) Intact reflexes distal to the injury
E) Ability to perceive light touch in the feet
Correct Answer: B) Priapism
Rationale: Priapism (a persistent, involuntary erection) is caused by the loss of sympathetic
ANSWERS/NEWEST UPDATE!!!
Question 1
Why is a measure of serum lactate obtained in the initial assessment of the trauma patient?
A) To measure the effectiveness of oxygenation and ventilation
B) To quantify the base deficit for the adequacy of cellular perfusion
C) To gauge end-organ perfusion and tissue hypoxia
D) To determine the underlying cause of obstructive shock
E) To assess the patient's nutritional status post-injury
Correct Answer: C) To gauge end-organ perfusion and tissue hypoxia
Rationale: Serum lactate is a byproduct of anaerobic metabolism. In trauma, elevated levels
indicate that tissues are not receiving enough oxygen (hypoxia), leading to anaerobic
metabolism. It serves as a sensitive indicator of the adequacy of resuscitation and end-
organ perfusion even when vital signs appear stable.
Question 2
A trauma patient is restless and repeatedly asking "where am I?" Vital signs upon arrival: BP
100/60, HR 96, RR 24. Current vital signs: BP 104/84, HR 108, RR 28. The patient’s skin is cool
and dry. This patient is in which stage of shock?
A) Compensated
B) Progressive
C) Irreversible
D) Decompensated
E) Refractory
Correct Answer: A) Compensated
Rationale: In compensated shock, the body’s homeostatic mechanisms (such as the release
of catecholamines) attempt to maintain cardiac output and blood pressure. Indicators
include a slightly elevated heart rate, increased respiratory rate, and a narrowing pulse
pressure (the difference between systolic and diastolic). The systolic pressure is often
maintained within normal limits during this stage.
Question 3
An elderly patient with a history of anticoagulant use presents after a fall at home. She denies
loss of consciousness but has a forehead hematoma, headache, dizziness, and nausea. Which is
the most likely cause?
A) Epidural hematoma
B) Diffuse axonal injury
C) Post-concussive syndrome
D) Subdural hematoma
E) Intracerebral hemorrhage
Correct Answer: D) Subdural hematoma
Rationale: Subdural hematomas are caused by the tearing of bridging veins and are
, 2
common in the elderly due to brain atrophy, which puts tension on those veins.
Anticoagulant use significantly increases the risk. Symptoms often develop more slowly
than an epidural hematoma (which is usually arterial), but nausea, headache, and dizziness
following a fall are classic indicators.
Question 4
EMS brings a patient who fell while riding a bicycle. Using the American College of Surgeons
screening guidelines, which assessment finding requires radiologic spine clearance?
A) Alert and oriented with no neurologic deficits
B) Multiple abrasions to the upper extremities
C) Multiple requests for water
D) Smell of alcohol on breath
E) Presence of a helmet during the impact
Correct Answer: D) Smell of alcohol on breath
Rationale: The presence of "distracting injuries" or "altered mental status" (including
intoxication) prevents a clinician from reliably clearing a patient’s spine through physical
examination alone. Alcohol can mask the pain of a spinal injury; therefore, radiologic
clearance is required.
Question 5
Which of the following occurs during the third impact of a motor vehicle crash?
A) The driver of the vehicle collides with the steering wheel
B) The vehicle collides with a stationary object like a tree
C) The internal organs (e.g., aorta) collide with the body’s structures
D) The airbag deploys and strikes the passenger
E) The loose objects in the car strike the occupants
Correct Answer: C) The internal organs (e.g., aorta) collide with the body’s structures
Rationale: A motor vehicle crash involves three impacts: 1) The vehicle hits an object. 2)
The occupant hits the interior of the vehicle. 3) The internal organs hit the internal
structures of the body (deceleration injury). A common example is the aorta tearing at the
ligamentum arteriosum.
Question 6
A passenger in a high-speed MVC is brought to a rural ED. If significant abdominal and pelvic
injuries are noted in the primary survey, which is the priority intervention?
A) Initiate transfer to a trauma center
B) Provide a detailed report to the operating room nurse
C) Obtain comprehensive CT imaging of the head and spine
D) Place a gastric tube for decompression
E) Perform a diagnostic peritoneal lavage (DPL)
Correct Answer: A) Initiate transfer to a trauma center
, 3
Rationale: Rural or non-trauma hospitals often lack the surgical resources to manage
massive internal hemorrhage or complex pelvic fractures. Once life-threatening injuries
are identified in the primary survey, the priority is to move the patient to a definitive care
facility (Trauma Center).
Question 7
Which of the following traumatic injuries is LEAST likely to be promptly identified during the
initial assessment?
A) Spleen laceration
B) Lung contusion
C) Bowel injury
D) Brain hematoma
E) Rib fractures
Correct Answer: C) Bowel injury
Rationale: Bowel injuries often present subtly and may not show significant fluid or signs on
initial FAST exams or physical assessments. Sepsis or peritonitis from a hollow-viscus
injury may take hours to manifest, whereas solid organ bleeds (spleen) or lung injuries
show symptoms more rapidly.
Question 8
Patients with a significant crush injury should be monitored closely for which of the following
complications?
A) Hypernatremia
B) Hypercalcemia
C) Dysrhythmias
D) Polyuria
E) Hypokalemia
Correct Answer: C) Dysrhythmias
Rationale: Crush injuries cause Rhabdomyolysis, leading to the release of intracellular
contents like potassium (hyperkalemia) and myoglobin into the bloodstream.
Hyperkalemia is a direct cause of lethal cardiac dysrhythmias.
Question 9
What physical assessment finding raises immediate suspicion of a complete spinal cord injury?
A) Weakness in the lower extremities
B) Priapism
C) Voluntary anal sphincter tone
D) Intact reflexes distal to the injury
E) Ability to perceive light touch in the feet
Correct Answer: B) Priapism
Rationale: Priapism (a persistent, involuntary erection) is caused by the loss of sympathetic
