WOCNCB CERTIFIED WOUND CARE NURSE (CWCN) EXAM PREP 2025/2026 | BASED ON
WOUND MANAGEMENT CORE CURRICULUM 2ND EDITION BY LAURIE MCNICHOL, CATHERINE
RATLIFF, AND STEPHANIE YATES QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2026 Q&A |LATEST EXAM UPDATE 2026/2027
Section One: Questions 1–100
Which layer of the skin is entirely avascular and relies on the diffusion of nutrients from the dermis?
A. Stratum basale
B. Papillary dermis
C. Reticular dermis
D. Hypodermis
🟢 Correct answer A. Stratum basale
🔴 RATIONALE: The epidermis is completely avascular and receives its oxygen and nutrients via
diffusion from the underlying dermis across the basement membrane. The stratum basale is the
deepest layer of the epidermis. The papillary and reticular layers are parts of the dermis, and the
hypodermis is the subcutaneous tissue, all of which contain blood vessels.
A patient presents with a full-thickness wound on the right lower extremity. During the proliferative
phase of wound healing, which cell type is primarily responsible for synthesizing collagen and
ground substance?
A. Macrophage
B. Neutrophil
C. Fibroblast
D. Keratinocyte
🟢 Correct answer C. Fibroblast
🔴 RATIONALE: Fibroblasts are the primary structural cells responsible for the synthesis of
collagen, elastin, and proteoglycans during the proliferative phase of wound healing, creating the
,extracellular matrix and granulation tissue. Macrophages and neutrophils dominate the
inflammatory phase, while keratinocytes are responsible for epithelialization.
Under the NPUAP/EPUAP/PPPIA pressure injury staging system, how should a wound be
classified if it exhibits full-thickness tissue loss where the base of the injury is completely covered
by slough or eschar?
A. Stage 3 pressure injury
B. Stage 4 pressure injury
C. Unstageable pressure injury
D. Deep tissue pressure injury
🟢 Correct answer C. Unstageable pressure injury
🔴 RATIONALE: If slough or eschar completely obscures the base of a full-thickness wound, the
true depth of the tissue damage cannot be visualized, making it unstageable. Once the dead tissue
is removed, it will typically be revealed as a Stage 3 or Stage 4 pressure injury.
A wound care nurse is assessing an arterial ulcer on a patient's lateral malleolus. Which clinical
finding is most characteristic of an ischemic arterial ulcer compared to a venous stasis ulcer?
A. Copious amounts of serosanguinous exudate
B. Hyperpigmentation of the surrounding skin
C. Severe pain that worsens with leg elevation
D. Irregular wound margins with a ruddy red bed
🟢 Correct answer C. Severe pain that worsens with leg elevation
🔴 RATIONALE: Arterial ulcers are caused by inadequate blood supply, and elevating the leg
further decreases arterial perfusion, exacerbating ischemic pain. Conversely, venous ulcers
generally improve with elevation due to reduced venous hypertension. Arterial ulcers typically
feature minimal drainage, pale punch-out edges, and minimal surrounding hyperpigmentation.
,According to current evidence-based guidelines, what is the recommended range of interface
pressure required for therapeutic compression therapy to manage venous leg ulcers effectively in a
mobile patient without arterial disease?
A. 15–20 mmHg
B. 30–40 mmHg
C. 50–60 mmHg
D. 70–80 mmHg
🟢 Correct answer B. 30–40 mmHg
🔴 RATIONALE: Standard therapeutic compression for venous leg ulcers requires an interface
pressure of 30–40 mmHg at the ankle to overcome venous hypertension and promote venous
return in ambulatory patients. Pressures below 20 mmHg are generally insufficient for venous
ulcers, while pressures above 50 mmHg risk arterial compromise.
A patient with diabetes mellitus presents with a plantar foot ulcer under the first metatarsal head.
The wound care nurse notes significant surrounding hyperkeratotic callus. What is the priority
intervention to promote healing of this neuropathic ulcer?
A. Applying a highly absorptive alginate dressing
B. Initiating systemic antibiotic therapy
C. Performing sharp debridement of the callus and offloading
D. Ordering an elastic compression wrap
🟢 Correct answer C. Performing sharp debridement of the callus and offloading
🔴 RATIONALE: For neuropathic/diabetic foot ulcers, removing the hyperkeratotic wound margins
(callus) through sharp debridement reduces local pressure and allows epithelialization. Offloading
the pressure (e.g., using a total contact cast or specialized boot) is the foundational intervention
required to heal plantar neuropathic ulcers.
, During a comprehensive lower extremity assessment, the nurse obtains an Ankle-Brachial Index
(ABI) of 0.45 in a patient with a lower leg wound. How should this finding be interpreted regarding
the use of high-compression therapy?
A. Safe for full high-compression therapy (30–40 mmHg)
B. Safe for modified light compression therapy (15–20 mmHg)
C. Compression is strictly contraindicated due to severe arterial disease
D. Inconclusive due to non-compressible calcified vessels
🟢 Correct answer C. Compression is strictly contraindicated due to severe arterial disease
🔴 RATIONALE: An ABI between 0.41 and 0.49 indicates severe arterial disease. High
compression (and even modified light compression) is contraindicated when the ABI falls below 0.5
because compressing the limb can completely occlude the already compromised arterial flow,
risking necrosis and amputation.
When managing a heavily exudative wound, the nurse selects a calcium alginate dressing. What is
the mechanism of action that makes this dressing type appropriate for highly draining wounds?
A. It forms a hydrophobic barrier that repels excess moisture
B. It exchanges calcium ions for sodium ions from the exudate, forming a hydrophilic gel
C. It utilizes osmotic pressure to draw fluid out of the tissues via high salt concentrations
D. It actively donates moisture to dry eschar while absorbing liquid laterally
🟢 Correct answer B. It exchanges calcium ions for sodium ions from the exudate, forming a
hydrophilic gel
🔴 RATIONALE: Calcium alginates are highly absorbent biodegradable fibers derived from
seaweed. Upon contact with wound exudate containing sodium ions, a chemical ion exchange
occurs where calcium is traded for sodium, transforming the fibers into a moist, hydrophilic gel that
retains exudate.
WOUND MANAGEMENT CORE CURRICULUM 2ND EDITION BY LAURIE MCNICHOL, CATHERINE
RATLIFF, AND STEPHANIE YATES QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2026 Q&A |LATEST EXAM UPDATE 2026/2027
Section One: Questions 1–100
Which layer of the skin is entirely avascular and relies on the diffusion of nutrients from the dermis?
A. Stratum basale
B. Papillary dermis
C. Reticular dermis
D. Hypodermis
🟢 Correct answer A. Stratum basale
🔴 RATIONALE: The epidermis is completely avascular and receives its oxygen and nutrients via
diffusion from the underlying dermis across the basement membrane. The stratum basale is the
deepest layer of the epidermis. The papillary and reticular layers are parts of the dermis, and the
hypodermis is the subcutaneous tissue, all of which contain blood vessels.
A patient presents with a full-thickness wound on the right lower extremity. During the proliferative
phase of wound healing, which cell type is primarily responsible for synthesizing collagen and
ground substance?
A. Macrophage
B. Neutrophil
C. Fibroblast
D. Keratinocyte
🟢 Correct answer C. Fibroblast
🔴 RATIONALE: Fibroblasts are the primary structural cells responsible for the synthesis of
collagen, elastin, and proteoglycans during the proliferative phase of wound healing, creating the
,extracellular matrix and granulation tissue. Macrophages and neutrophils dominate the
inflammatory phase, while keratinocytes are responsible for epithelialization.
Under the NPUAP/EPUAP/PPPIA pressure injury staging system, how should a wound be
classified if it exhibits full-thickness tissue loss where the base of the injury is completely covered
by slough or eschar?
A. Stage 3 pressure injury
B. Stage 4 pressure injury
C. Unstageable pressure injury
D. Deep tissue pressure injury
🟢 Correct answer C. Unstageable pressure injury
🔴 RATIONALE: If slough or eschar completely obscures the base of a full-thickness wound, the
true depth of the tissue damage cannot be visualized, making it unstageable. Once the dead tissue
is removed, it will typically be revealed as a Stage 3 or Stage 4 pressure injury.
A wound care nurse is assessing an arterial ulcer on a patient's lateral malleolus. Which clinical
finding is most characteristic of an ischemic arterial ulcer compared to a venous stasis ulcer?
A. Copious amounts of serosanguinous exudate
B. Hyperpigmentation of the surrounding skin
C. Severe pain that worsens with leg elevation
D. Irregular wound margins with a ruddy red bed
🟢 Correct answer C. Severe pain that worsens with leg elevation
🔴 RATIONALE: Arterial ulcers are caused by inadequate blood supply, and elevating the leg
further decreases arterial perfusion, exacerbating ischemic pain. Conversely, venous ulcers
generally improve with elevation due to reduced venous hypertension. Arterial ulcers typically
feature minimal drainage, pale punch-out edges, and minimal surrounding hyperpigmentation.
,According to current evidence-based guidelines, what is the recommended range of interface
pressure required for therapeutic compression therapy to manage venous leg ulcers effectively in a
mobile patient without arterial disease?
A. 15–20 mmHg
B. 30–40 mmHg
C. 50–60 mmHg
D. 70–80 mmHg
🟢 Correct answer B. 30–40 mmHg
🔴 RATIONALE: Standard therapeutic compression for venous leg ulcers requires an interface
pressure of 30–40 mmHg at the ankle to overcome venous hypertension and promote venous
return in ambulatory patients. Pressures below 20 mmHg are generally insufficient for venous
ulcers, while pressures above 50 mmHg risk arterial compromise.
A patient with diabetes mellitus presents with a plantar foot ulcer under the first metatarsal head.
The wound care nurse notes significant surrounding hyperkeratotic callus. What is the priority
intervention to promote healing of this neuropathic ulcer?
A. Applying a highly absorptive alginate dressing
B. Initiating systemic antibiotic therapy
C. Performing sharp debridement of the callus and offloading
D. Ordering an elastic compression wrap
🟢 Correct answer C. Performing sharp debridement of the callus and offloading
🔴 RATIONALE: For neuropathic/diabetic foot ulcers, removing the hyperkeratotic wound margins
(callus) through sharp debridement reduces local pressure and allows epithelialization. Offloading
the pressure (e.g., using a total contact cast or specialized boot) is the foundational intervention
required to heal plantar neuropathic ulcers.
, During a comprehensive lower extremity assessment, the nurse obtains an Ankle-Brachial Index
(ABI) of 0.45 in a patient with a lower leg wound. How should this finding be interpreted regarding
the use of high-compression therapy?
A. Safe for full high-compression therapy (30–40 mmHg)
B. Safe for modified light compression therapy (15–20 mmHg)
C. Compression is strictly contraindicated due to severe arterial disease
D. Inconclusive due to non-compressible calcified vessels
🟢 Correct answer C. Compression is strictly contraindicated due to severe arterial disease
🔴 RATIONALE: An ABI between 0.41 and 0.49 indicates severe arterial disease. High
compression (and even modified light compression) is contraindicated when the ABI falls below 0.5
because compressing the limb can completely occlude the already compromised arterial flow,
risking necrosis and amputation.
When managing a heavily exudative wound, the nurse selects a calcium alginate dressing. What is
the mechanism of action that makes this dressing type appropriate for highly draining wounds?
A. It forms a hydrophobic barrier that repels excess moisture
B. It exchanges calcium ions for sodium ions from the exudate, forming a hydrophilic gel
C. It utilizes osmotic pressure to draw fluid out of the tissues via high salt concentrations
D. It actively donates moisture to dry eschar while absorbing liquid laterally
🟢 Correct answer B. It exchanges calcium ions for sodium ions from the exudate, forming a
hydrophilic gel
🔴 RATIONALE: Calcium alginates are highly absorbent biodegradable fibers derived from
seaweed. Upon contact with wound exudate containing sodium ions, a chemical ion exchange
occurs where calcium is traded for sodium, transforming the fibers into a moist, hydrophilic gel that
retains exudate.
