CBRN Certification for Burn-Care Nurses:
Individually Scheduled Exam Preparation A
Comprehensive 150-Question Practice
Examination for Advanced Burn Nursing
Certification (CBRN) with Detailed Rationales,
Historical Context, and Evidence-Based
References
Table of Contents
1. Pathophysiology of Burn Injury (Questions 1–15)
2. Initial Management (<72 Hours) (Questions 16–40)
3. Acute Care and Systems Management (Questions 41–65)
4. Pain, Agitation, and Delirium (PAD) (Questions 66–80)
5. Rehabilitation and Professional Practice (Questions 81–105)
6. Special Populations in Burn Care (Questions 106–123)
7. Wound Management and Infection Control (Questions 124–145)
8. CBRN-Specific and Mass Casualty Considerations (Questions 146–150)
Domain 1: Pathophysiology of Burn Injury
🟢 Question 1. A patient presents with a burn that is white, waxy, and painless, with visible thrombosed
vessels. According to Jackson’s burn wound model, which zone does this describe?
A. Zone of hyperemia
B. Zone of stasis
🔴🔴 C. Zone of coagulation
D. Zone of ischemia
Rationale: The zone of coagulation is the central area of irreversible cellular damage and coagulation
necrosis. It appears white, waxy, or charred and is insensate due to destruction of nerve endings. The
zone of stasis surrounds it and may be salvageable with proper resuscitation. The zone of hyperemia is
the outermost zone with increased blood flow. Reference: Herndon, D.N. (2018). Total Burn Care, 5th
ed., Elsevier.
,🟢 Question 2. Which pathophysiological mechanism primarily accounts for the massive fluid shifts seen
in the first 24 hours after a major burn?
A. Decreased capillary permeability
B. Increased systemic vascular resistance
🔴🔴 C. Increased capillary permeability and decreased plasma oncotic pressure
D. Suppression of inflammatory mediators
Rationale: Burn injury triggers a systemic inflammatory response that increases capillary permeability,
allowing plasma proteins and fluid to leak into the interstitium. This, combined with decreased plasma
oncotic pressure, causes profound edema and hypovolemia. Reference: American Burn Association.
(2023). Advanced Burn Life Support Provider Manual.
🟢 Question 3. A patient with a 40% TBSA burn develops a systemic inflammatory response. Which
mediator is primarily responsible for the hypermetabolic state observed in the first week post-burn?
A. Interleukin-4
🔴🔴 B. Tumor necrosis factor-alpha (TNF-α)
C. Interleukin-10
D. Transforming growth factor-beta (TGF-β)
Rationale: TNF-α is a key pro-inflammatory cytokine that drives the systemic inflammatory response
syndrome (SIRS) and hypermetabolism after major burns. It contributes to fever, tachycardia, and
catabolism. Reference: Smith, S. (2020). Burn Nursing: Principles and Practice, 3rd ed., Springer.
🟢 Question 4. During the initial assessment of an electrical burn, the nurse notes a small entry wound on
the hand and a larger exit wound on the foot. Which phenomenon explains the extent of deep tissue
damage?
A. Jackson’s zone of hyperemia
🔴🔴 B. The “iceberg effect”
C. Koebner phenomenon
D. Raynaud’s phenomenon
Rationale: High-voltage electrical injuries cause extensive deep tissue damage (muscle, nerve, vessel)
along the current path while external wounds may appear deceptively small—known as the “iceberg
effect.” This can lead to rhabdomyolysis and compartment syndrome. Reference: Herndon, D.N. (2018).
Total Burn Care, 5th ed.
🟢 Question 5. A patient with a circumferential full-thickness burn to the forearm has absent Doppler
signals. What is the priority nursing action?
,A. Elevate the extremity
B. Apply a compression dressing
🔴🔴 C. Prepare for escharotomy
D. Administer a bolus of IV fluids
Rationale: Circumferential full-thickness burns can act as a tourniquet as edema develops beneath
inelastic eschar. Absent pulsatile flow indicates vascular compromise requiring immediate escharotomy
to restore perfusion. Elevation may worsen arterial flow. Reference: ABA Advanced Burn Life Support
Manual.
🟢 Question 6. Which inhalation injury type is characterized by systemic poisoning from carbon monoxide
or cyanide?
A. Upper airway injury
B. Lower airway injury
🔴🔴 C. Systemic poisoning
D. Pulmonary parenchymal injury
Rationale: Inhalation injuries are classified as upper airway (thermal), lower airway (chemical), and
systemic poisoning (carbon monoxide, cyanide). Systemic poisons are absorbed through the lungs and
cause toxicity distant from the airway. Reference: BCEN CBRN Content Outline, Domain 1.E.
🟢 Question 7. A burn patient develops a “curling’s ulcer” during the acute phase. This is most directly
related to which systemic response?
A. Burn shock
🔴🔴 B. Hypermetabolic stress response
C. Sepsis
D. Multiple organ dysfunction syndrome
Rationale: Curling’s ulcer is a stress-related gastric mucosal lesion caused by the hypermetabolic
response and splanchnic vasoconstriction after major burns. Prophylactic acid suppression is often
indicated. Reference: Total Burn Care, 5th ed.
🟢 Question 8. According to the American Burn Association, which burn size in adults requires transfer to
a burn center?
A. >5% TBSA partial-thickness
🔴🔴 B. >10% TBSA partial-thickness
C. >15% TBSA partial-thickness
D. >20% TBSA partial-thickness
, Rationale: The ABA transfer criteria include partial-thickness burns >10% TBSA in adults. Other criteria
include burns involving face, hands, feet, genitalia, perineum, or major joints; third-degree burns;
electrical, chemical, or inhalation injuries. Reference: ABA Burn Center Referral Criteria.
🟢 Question 9. Which phase of wound healing is characterized by fibroblast proliferation and collagen
deposition?
A. Hemostasis
🔴🔴 B. Proliferative phase
C. Inflammatory phase
D. Maturation phase
Rationale: The proliferative phase (days 3–21) involves fibroblast migration, collagen synthesis,
angiogenesis, and granulation tissue formation. The maturation phase involves scar remodeling.
Reference: BCEN CBRN Content Outline, Domain 1.D.
🟢 Question 10. A patient with a 60% TBSA burn is at risk for abdominal compartment syndrome. Which
finding is an early indicator?
A. Decreased urine output
B. Increased peak airway pressure
🔴🔴 C. Abdominal distension with elevated bladder pressure
D. Metabolic alkalosis
Rationale: Abdominal compartment syndrome after massive resuscitation presents with abdominal
distension, elevated intra-abdominal pressure (measured via bladder pressure), and organ dysfunction.
Early recognition is critical to prevent ischemia. Reference: Total Burn Care, 5th ed.
🟢 Question 11. Which burn depth is characterized by a pale, mottled appearance with decreased
sensation and sluggish capillary refill?
A. Superficial
B. Superficial partial-thickness
🔴🔴 C. Deep partial-thickness
D. Full-thickness
Rationale: Deep partial-thickness burns extend into the reticular dermis, appearing pale and mottled
with decreased sensation and sluggish capillary refill. They may require excision and grafting. Reference:
Burn Nursing: Principles and Practice.
🟢 Question 12. The “rule of nines” in an adult assigns what percentage to the entire left leg?
Individually Scheduled Exam Preparation A
Comprehensive 150-Question Practice
Examination for Advanced Burn Nursing
Certification (CBRN) with Detailed Rationales,
Historical Context, and Evidence-Based
References
Table of Contents
1. Pathophysiology of Burn Injury (Questions 1–15)
2. Initial Management (<72 Hours) (Questions 16–40)
3. Acute Care and Systems Management (Questions 41–65)
4. Pain, Agitation, and Delirium (PAD) (Questions 66–80)
5. Rehabilitation and Professional Practice (Questions 81–105)
6. Special Populations in Burn Care (Questions 106–123)
7. Wound Management and Infection Control (Questions 124–145)
8. CBRN-Specific and Mass Casualty Considerations (Questions 146–150)
Domain 1: Pathophysiology of Burn Injury
🟢 Question 1. A patient presents with a burn that is white, waxy, and painless, with visible thrombosed
vessels. According to Jackson’s burn wound model, which zone does this describe?
A. Zone of hyperemia
B. Zone of stasis
🔴🔴 C. Zone of coagulation
D. Zone of ischemia
Rationale: The zone of coagulation is the central area of irreversible cellular damage and coagulation
necrosis. It appears white, waxy, or charred and is insensate due to destruction of nerve endings. The
zone of stasis surrounds it and may be salvageable with proper resuscitation. The zone of hyperemia is
the outermost zone with increased blood flow. Reference: Herndon, D.N. (2018). Total Burn Care, 5th
ed., Elsevier.
,🟢 Question 2. Which pathophysiological mechanism primarily accounts for the massive fluid shifts seen
in the first 24 hours after a major burn?
A. Decreased capillary permeability
B. Increased systemic vascular resistance
🔴🔴 C. Increased capillary permeability and decreased plasma oncotic pressure
D. Suppression of inflammatory mediators
Rationale: Burn injury triggers a systemic inflammatory response that increases capillary permeability,
allowing plasma proteins and fluid to leak into the interstitium. This, combined with decreased plasma
oncotic pressure, causes profound edema and hypovolemia. Reference: American Burn Association.
(2023). Advanced Burn Life Support Provider Manual.
🟢 Question 3. A patient with a 40% TBSA burn develops a systemic inflammatory response. Which
mediator is primarily responsible for the hypermetabolic state observed in the first week post-burn?
A. Interleukin-4
🔴🔴 B. Tumor necrosis factor-alpha (TNF-α)
C. Interleukin-10
D. Transforming growth factor-beta (TGF-β)
Rationale: TNF-α is a key pro-inflammatory cytokine that drives the systemic inflammatory response
syndrome (SIRS) and hypermetabolism after major burns. It contributes to fever, tachycardia, and
catabolism. Reference: Smith, S. (2020). Burn Nursing: Principles and Practice, 3rd ed., Springer.
🟢 Question 4. During the initial assessment of an electrical burn, the nurse notes a small entry wound on
the hand and a larger exit wound on the foot. Which phenomenon explains the extent of deep tissue
damage?
A. Jackson’s zone of hyperemia
🔴🔴 B. The “iceberg effect”
C. Koebner phenomenon
D. Raynaud’s phenomenon
Rationale: High-voltage electrical injuries cause extensive deep tissue damage (muscle, nerve, vessel)
along the current path while external wounds may appear deceptively small—known as the “iceberg
effect.” This can lead to rhabdomyolysis and compartment syndrome. Reference: Herndon, D.N. (2018).
Total Burn Care, 5th ed.
🟢 Question 5. A patient with a circumferential full-thickness burn to the forearm has absent Doppler
signals. What is the priority nursing action?
,A. Elevate the extremity
B. Apply a compression dressing
🔴🔴 C. Prepare for escharotomy
D. Administer a bolus of IV fluids
Rationale: Circumferential full-thickness burns can act as a tourniquet as edema develops beneath
inelastic eschar. Absent pulsatile flow indicates vascular compromise requiring immediate escharotomy
to restore perfusion. Elevation may worsen arterial flow. Reference: ABA Advanced Burn Life Support
Manual.
🟢 Question 6. Which inhalation injury type is characterized by systemic poisoning from carbon monoxide
or cyanide?
A. Upper airway injury
B. Lower airway injury
🔴🔴 C. Systemic poisoning
D. Pulmonary parenchymal injury
Rationale: Inhalation injuries are classified as upper airway (thermal), lower airway (chemical), and
systemic poisoning (carbon monoxide, cyanide). Systemic poisons are absorbed through the lungs and
cause toxicity distant from the airway. Reference: BCEN CBRN Content Outline, Domain 1.E.
🟢 Question 7. A burn patient develops a “curling’s ulcer” during the acute phase. This is most directly
related to which systemic response?
A. Burn shock
🔴🔴 B. Hypermetabolic stress response
C. Sepsis
D. Multiple organ dysfunction syndrome
Rationale: Curling’s ulcer is a stress-related gastric mucosal lesion caused by the hypermetabolic
response and splanchnic vasoconstriction after major burns. Prophylactic acid suppression is often
indicated. Reference: Total Burn Care, 5th ed.
🟢 Question 8. According to the American Burn Association, which burn size in adults requires transfer to
a burn center?
A. >5% TBSA partial-thickness
🔴🔴 B. >10% TBSA partial-thickness
C. >15% TBSA partial-thickness
D. >20% TBSA partial-thickness
, Rationale: The ABA transfer criteria include partial-thickness burns >10% TBSA in adults. Other criteria
include burns involving face, hands, feet, genitalia, perineum, or major joints; third-degree burns;
electrical, chemical, or inhalation injuries. Reference: ABA Burn Center Referral Criteria.
🟢 Question 9. Which phase of wound healing is characterized by fibroblast proliferation and collagen
deposition?
A. Hemostasis
🔴🔴 B. Proliferative phase
C. Inflammatory phase
D. Maturation phase
Rationale: The proliferative phase (days 3–21) involves fibroblast migration, collagen synthesis,
angiogenesis, and granulation tissue formation. The maturation phase involves scar remodeling.
Reference: BCEN CBRN Content Outline, Domain 1.D.
🟢 Question 10. A patient with a 60% TBSA burn is at risk for abdominal compartment syndrome. Which
finding is an early indicator?
A. Decreased urine output
B. Increased peak airway pressure
🔴🔴 C. Abdominal distension with elevated bladder pressure
D. Metabolic alkalosis
Rationale: Abdominal compartment syndrome after massive resuscitation presents with abdominal
distension, elevated intra-abdominal pressure (measured via bladder pressure), and organ dysfunction.
Early recognition is critical to prevent ischemia. Reference: Total Burn Care, 5th ed.
🟢 Question 11. Which burn depth is characterized by a pale, mottled appearance with decreased
sensation and sluggish capillary refill?
A. Superficial
B. Superficial partial-thickness
🔴🔴 C. Deep partial-thickness
D. Full-thickness
Rationale: Deep partial-thickness burns extend into the reticular dermis, appearing pale and mottled
with decreased sensation and sluggish capillary refill. They may require excision and grafting. Reference:
Burn Nursing: Principles and Practice.
🟢 Question 12. The “rule of nines” in an adult assigns what percentage to the entire left leg?
