CBRN -CERTIFIED BURN REGISTERED NURSE
|ACTUAL QUESTIONS AND VERIFIED
ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
PATHOPHYSIOLOGY OF BURNS
Which of the following patients is most likely to present with an oral commissure burn?
A) 2-year-old child
B) 15-year-old adolescent
C) 41-year-old housekeeper
D) 80-year-old retiree
CORRECT ANSWER
A) 2-year-old child
A commissure burn is a burn that affects the lips and mucous membranes and tends to
occur when children chew on an electrical cord or place it in their mouths. It is most
common in toddlers and preschoolers who are likely to stick objects in their mouths
without understanding the consequences. While these burns could occur in other age
groups (e.g. 15-year-olds, 41-year-olds, or 80-year-olds), it is much less likely in more
mature individuals who will understand the consequences of putting an electrical cord in
their mouths.
Question 2
PATHOPHYSIOLOGY OF BURNS
1
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,A patient requires fasciotomies as part of their treatment. What type of burn did this patient
most likely present with?
A) Second-degree burns to the chest and abdomen
B) Scalding injury to both hands, secondary to steam
C) Chemical burn from splashing acid on the anterior face and neck
D) Electrical burn with wounds noted on the left hand and left foot
CORRECT ANSWER
D) Electrical burn with wounds noted on the left hand and left foot
Electrical burns can cause extensive fluid extravasation with the skin above the burns
remaining intact. This can cause compartment syndrome in the affected limbs.
Compartment syndrome is more likely to occur in burns that are circumferential and
thermal. Burns to the chest and abdomen are not circumferential and have a lower
probability of requiring fasciotomies compared to electrical burns involving the limbs.
Furthermore, second-degree burns are less likely than third-degree burns to require
fasciotomies. Scalding injuries and chemical burns that are not circumferential carry a
lower probability of requiring fasciotomies compared to electrical burns involving the
limbs.
Question 3
PATHOPHYSIOLOGY OF BURNS
Which type of motor vehicle collision is most likely to result in car fires and burns?
A) Rollover
B) Frontal collision
C) Rear-end collision
D) Side-impact collision
2
@https://www.stuvia.com/user/thestudyvault
,CORRECT ANSWER
B) Frontal collision
The highest incidences of car fires resulting in burns involve high impact frontal motor
vehicle collisions. Although rollover, rear-end, and side-impact collisions can result in car
fires, it is less common than the frontal-impact collisions.
Question 4
PATHOPHYSIOLOGY OF BURNS
All of the following elements affect the severity of a chemical burn. When caring for patients
who have experienced a chemical burn, the burn nurse should focus on which element to
reduce the severity of the burn?
A) Length of exposure
B) Quantity of chemical
C) Specific tissue involved
D) Type of chemical agent
CORRECT ANSWER
A) Length of exposure
Chemicals (especially alkali chemicals) not only cause burns on initial contact with body
tissue, but they will also continue to burn until neutralized. The longer the tissue is
exposed to a chemical, the deeper the burn tends to be. Therefore, a high priority of care
when caring for a patient with a chemical burn is to neutralize the chemical, generally
through decontamination; this reduces the length of exposure. Although the severity of a
chemical burn is directly related to the quantity of chemical contacting body tissue, the
burn nurse has little impact on this, so it is not a higher priority than reducing the length
of exposure. Similarly, certain chemicals cause more severe burns, but this cannot be
altered by the burn nurse after the burn has occurred, so it is not a higher priority than
reducing the length of exposure. Certain tissues (such as mucosa or the surface of the
3
@https://www.stuvia.com/user/thestudyvault
, eye) will be more severely burned compared to skin or other body tissue, despite all
other factors being identical (such as the type or concentration of chemical); after
exposure, this cannot be altered by the burn nurse, so it is not a higher priority than
reducing the length of exposure.
Question 5
PATHOPHYSIOLOGY OF BURNS
Aggressive fluid resuscitation following a burn injury is known to:
A) Extend the zone of hyperemia
B) Reduce tissue death in the zone of stasis
C) Reverse tissue damage in the zone of coagulation
D) Convert the zone of coagulation into a zone of hyperemia
CORRECT ANSWER
B) Reduce tissue death in the zone of stasis
Edema in the zone of stasis reduces blood flow and oxygen delivery into this area.
Aggressive fluid resuscitation elevates blood pressure, which can improve blood flow and
oxygen delivery into the zone of stasis and may salvage this tissue from death. Fluid does
not extend the zone of hyperemia. The zone of coagulation contains non-viable tissue,
and tissue damage reversal is not possible in this area, despite aggressive fluid
resuscitation. Similarly, since this tissue is non-viable, fluid will not convert this zone
back into viable tissue (such as the zone of hyperemia).
Question 6
PATHOPHYSIOLOGY OF BURNS
4
@https://www.stuvia.com/user/thestudyvault
|ACTUAL QUESTIONS AND VERIFIED
ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
PATHOPHYSIOLOGY OF BURNS
Which of the following patients is most likely to present with an oral commissure burn?
A) 2-year-old child
B) 15-year-old adolescent
C) 41-year-old housekeeper
D) 80-year-old retiree
CORRECT ANSWER
A) 2-year-old child
A commissure burn is a burn that affects the lips and mucous membranes and tends to
occur when children chew on an electrical cord or place it in their mouths. It is most
common in toddlers and preschoolers who are likely to stick objects in their mouths
without understanding the consequences. While these burns could occur in other age
groups (e.g. 15-year-olds, 41-year-olds, or 80-year-olds), it is much less likely in more
mature individuals who will understand the consequences of putting an electrical cord in
their mouths.
Question 2
PATHOPHYSIOLOGY OF BURNS
1
@https://www.stuvia.com/user/thestudyvault
,A patient requires fasciotomies as part of their treatment. What type of burn did this patient
most likely present with?
A) Second-degree burns to the chest and abdomen
B) Scalding injury to both hands, secondary to steam
C) Chemical burn from splashing acid on the anterior face and neck
D) Electrical burn with wounds noted on the left hand and left foot
CORRECT ANSWER
D) Electrical burn with wounds noted on the left hand and left foot
Electrical burns can cause extensive fluid extravasation with the skin above the burns
remaining intact. This can cause compartment syndrome in the affected limbs.
Compartment syndrome is more likely to occur in burns that are circumferential and
thermal. Burns to the chest and abdomen are not circumferential and have a lower
probability of requiring fasciotomies compared to electrical burns involving the limbs.
Furthermore, second-degree burns are less likely than third-degree burns to require
fasciotomies. Scalding injuries and chemical burns that are not circumferential carry a
lower probability of requiring fasciotomies compared to electrical burns involving the
limbs.
Question 3
PATHOPHYSIOLOGY OF BURNS
Which type of motor vehicle collision is most likely to result in car fires and burns?
A) Rollover
B) Frontal collision
C) Rear-end collision
D) Side-impact collision
2
@https://www.stuvia.com/user/thestudyvault
,CORRECT ANSWER
B) Frontal collision
The highest incidences of car fires resulting in burns involve high impact frontal motor
vehicle collisions. Although rollover, rear-end, and side-impact collisions can result in car
fires, it is less common than the frontal-impact collisions.
Question 4
PATHOPHYSIOLOGY OF BURNS
All of the following elements affect the severity of a chemical burn. When caring for patients
who have experienced a chemical burn, the burn nurse should focus on which element to
reduce the severity of the burn?
A) Length of exposure
B) Quantity of chemical
C) Specific tissue involved
D) Type of chemical agent
CORRECT ANSWER
A) Length of exposure
Chemicals (especially alkali chemicals) not only cause burns on initial contact with body
tissue, but they will also continue to burn until neutralized. The longer the tissue is
exposed to a chemical, the deeper the burn tends to be. Therefore, a high priority of care
when caring for a patient with a chemical burn is to neutralize the chemical, generally
through decontamination; this reduces the length of exposure. Although the severity of a
chemical burn is directly related to the quantity of chemical contacting body tissue, the
burn nurse has little impact on this, so it is not a higher priority than reducing the length
of exposure. Similarly, certain chemicals cause more severe burns, but this cannot be
altered by the burn nurse after the burn has occurred, so it is not a higher priority than
reducing the length of exposure. Certain tissues (such as mucosa or the surface of the
3
@https://www.stuvia.com/user/thestudyvault
, eye) will be more severely burned compared to skin or other body tissue, despite all
other factors being identical (such as the type or concentration of chemical); after
exposure, this cannot be altered by the burn nurse, so it is not a higher priority than
reducing the length of exposure.
Question 5
PATHOPHYSIOLOGY OF BURNS
Aggressive fluid resuscitation following a burn injury is known to:
A) Extend the zone of hyperemia
B) Reduce tissue death in the zone of stasis
C) Reverse tissue damage in the zone of coagulation
D) Convert the zone of coagulation into a zone of hyperemia
CORRECT ANSWER
B) Reduce tissue death in the zone of stasis
Edema in the zone of stasis reduces blood flow and oxygen delivery into this area.
Aggressive fluid resuscitation elevates blood pressure, which can improve blood flow and
oxygen delivery into the zone of stasis and may salvage this tissue from death. Fluid does
not extend the zone of hyperemia. The zone of coagulation contains non-viable tissue,
and tissue damage reversal is not possible in this area, despite aggressive fluid
resuscitation. Similarly, since this tissue is non-viable, fluid will not convert this zone
back into viable tissue (such as the zone of hyperemia).
Question 6
PATHOPHYSIOLOGY OF BURNS
4
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