NPTE-PT · Domain 4 of 8

NPTE-PT Domain 4: Integumentary System

Integumentary items test wound and burn examination, staging and classification, the causes behind arterial, venous, neuropathic and pressure wounds, and choices about debridement, dressings, offloading, compression, scar management and burn positioning.

Exam weight
4-6%
Official content areas
3
Estimated questions estimate
~10
Suggested study time estimate
12–16 hrs

About 11 min read Reviewed October 2026

Overview

The Integumentary System has 8 to 11 of the 180 scored NPTE-PT items, about 4 to 6 percent. FSBPT splits it into physical therapy examination (2-3 items), foundations for evaluation, differential diagnosis and prognosis (3-4 items), and interventions (3-4 items). The examination category explicitly includes movement analysis of the skin: friction, shear, pressure and scar mobility.

Expect questions on measuring and describing wounds, pressure injury staging, the Braden Scale, burn depth and the rule of nines, and protective sensation testing with monofilaments. Foundations items ask you to tell arterial, venous, neuropathic and pressure wounds apart, recognize infection and skin cancer warning signs, and account for medications and grafting surgery. Interventions cover debridement methods, dressing selection by exudate and tissue type, offloading, compression, positioning to prevent burn contractures, and pressure garments.

How it's tested

Integumentary items usually describe a wound or burn by location, appearance, drainage, pain and pulses, then ask you to classify it or choose the next intervention. Short stems carry many clues, so read every descriptor. Wound bed color, exudate amount, periwound skin and whether the patient has sensation often decide the answer.

  • Classify the wound

    Location, shape, pain and surrounding skin are described, and you decide whether the wound is arterial, venous, neuropathic or pressure related.

  • Stage or depth

    Tissue layers visible in a pressure injury or the appearance of a burn are given, and you pick the stage or depth.

  • Match the dressing

    Exudate level, tissue type and infection status are described, and you choose debridement or a dressing category.

Reasoning it through

A shallow wound over the medial malleolus has irregular edges, heavy drainage and brown discoloration of the surrounding skin, and pedal pulses are normal. These features fit venous insufficiency. The best plan combines an absorptive dressing such as foam or alginate with compression, once arterial disease is excluded, rather than a hydrogel that adds moisture to an already wet wound.

Content areas 3

Official content areas from the FSBPT outline, in outline order.

4.1 Physical Therapy Examination (integumentary)Integumentary tests and measures with outcome measures, skin anatomy and physiology, and movement analysis covering friction, shear, pressure and scar mobility (2-3 items).
What it means
This category covers how a physical therapist examines skin and wounds: inspection, measurement, tissue description, risk scales, sensation testing, vascular screening and analysis of how movement and positioning load the skin.
What to understand
Know how to measure length, width and depth using the clock method with 12 o'clock toward the head, and how to document undermining and tunneling. Know tissue types (granulation, slough, eschar) and exudate descriptions. Know the Braden Scale, where lower scores mean higher pressure injury risk, and the 5.07 Semmes-Weinstein monofilament for protective sensation. Estimate burn size with the rule of nines and know the Lund-Browder chart for children. Analyze friction during transfers, shear when the head of bed is raised, and scar mobility across joints.
How it shows up
Questions ask which measure fits a wound, what a risk score means, or how much body surface area a burn covers.
Common confusion
Reading a high Braden score as high risk; lower totals indicate greater risk.
4.2 Foundations for Evaluation, Differential Diagnosis, & Prognosis (integumentary)Skin diseases and conditions, medical management including imaging, labs and surgery, medication effects and differential diagnosis (3-4 items).
What it means
This category covers the pathology of wounds, burns and skin disease and how medical care and medications change healing, so you can identify a wound's cause, flag concerning lesions and predict how healing will progress.
What to understand
Know pressure injury stages 1 through 4, unstageable and deep tissue injury. Separate arterial wounds (distal, punched out, painful, pale bed, weak pulses), venous wounds (medial gaiter area, shallow, heavy drainage, edema) and neuropathic wounds (plantar, painless, callused). Know burn depths from superficial to full thickness and the course of skin grafts, including immobilization for several days after grafting. Recognize cellulitis, ABCDE warning signs of melanoma, and the effects of corticosteroids, chemotherapy and poor nutrition, such as low albumin or prealbumin, on healing.
How it shows up
Expect a description of a lesion and a question about cause, stage, the need for referral or the expected healing time.
Common confusion
Assuming a painless foot wound is minor; lack of pain usually reflects neuropathy.
4.3 Interventions (integumentary)Integumentary interventions, related anatomy and physiology, and adverse effects from physical therapy, medical and surgical care (3-4 items).
What it means
This category covers wound and burn management: cleansing, debridement, dressing selection, pressure redistribution, offloading, compression, positioning, scar care and education, along with skin damage caused by treatment of this or other systems.
What to understand
Know debridement methods: selective (sharp, enzymatic, autolytic) and nonselective (wet-to-dry, aggressive irrigation), and avoid debriding stable dry eschar on an ischemic heel. Match dressings to moisture: hydrogel for dry wounds, alginate or foam for heavy exudate, hydrocolloid for low to moderate exudate without infection, and transparent film for superficial wounds. Use total contact casting or offloading footwear for plantar neuropathic ulcers and compression for venous ulcers after an adequate ankle-brachial index. Position burns to prevent contractures, often shoulder abduction and knee and elbow extension. Watch for maceration, skin tears and burns from modalities.
How it shows up
Items ask for the best debridement, dressing, offloading or positioning choice, or how to prevent an adverse effect.
Common confusion
Using an occlusive hydrocolloid on an infected wound.

High-yield concepts

The terms, rules and formulas this domain turns into questions most often.

  • Stage 2 pressure injury

    Partial-thickness loss with exposed dermis.

    Remember
    No slough or fat visible.
    Tested as
    Staging items.
    Trap
    Calling an intact serum-filled pressure blister Stage 1.
  • Stage 3 pressure injury

    Full-thickness skin loss with fat visible.

    Remember
    No bone, tendon or muscle exposed.
    Tested as
    Staging items.
    Trap
    Confusing visible fat with Stage 4.
  • Stage 4 pressure injury

    Full-thickness loss with bone, tendon or muscle exposed.

    Remember
    Undermining and tunneling are common.
    Tested as
    Staging items.
    Trap
    Calling it unstageable when the base is visible.
  • Unstageable

    Base obscured by slough or eschar.

    Remember
    Cannot be staged until the base is seen.
    Tested as
    Staging items.
    Trap
    Guessing a stage under eschar.
  • Braden Scale

    Pressure injury risk tool with six subscales.

    Remember
    Lower total score means higher risk.
    Tested as
    Risk screening.
    Trap
    Reading it like a strength score.
  • Rule of nines

    Adult body surface area estimate for burns.

    Remember
    Each arm 9%, each leg 18%, front and back trunk 18% each.
    Tested as
    Burn size items.
    Trap
    Using adult values for young children.
  • Deep partial-thickness burn

    Burn into the deep dermis.

    Remember
    Slow healing, scarring risk, may need grafting.
    Tested as
    Burn depth items.
    Trap
    Expecting it to heal without scarring.
  • Arterial wound

    Wound caused by poor arterial inflow.

    Remember
    Painful, distal, punched-out, pale bed, weak pulses.
    Tested as
    Wound classification.
    Trap
    Applying compression.
  • Venous wound

    Wound from venous hypertension.

    Remember
    Medial malleolus, shallow, heavy exudate, edema.
    Tested as
    Wound classification.
    Trap
    Withholding compression after normal ABI.
  • Neuropathic wound

    Wound from loss of protective sensation.

    Remember
    Plantar pressure points, often painless, callus.
    Tested as
    Diabetic foot items.
    Trap
    Treating without offloading.
  • Selective debridement

    Removes only nonviable tissue.

    Remember
    Sharp, enzymatic and autolytic methods.
    Tested as
    Debridement choice.
    Trap
    Using wet-to-dry dressings on a clean wound.
  • Burn contracture positioning

    Positions opposing the position of comfort.

    Remember
    Neck extension, shoulder abduction, elbow and knee extension, ankle dorsiflexion.
    Tested as
    Burn rehab items.
    Trap
    Using pillows under the knees for comfort.
  • Skin graft immobilization

    Protection period after grafting.

    Remember
    Limit motion of the grafted area for several days per surgeon.
    Tested as
    Post-graft plan of care.
    Trap
    Starting full ROM on the first day.

Side by side

Concepts candidates mix up, compared on the point that decides the answer.

Arterial, venous and neuropathic wounds

ConceptMeaningKey differenceCommon trap
Arterial Ischemic tissue loss Painful, distal toes or lateral malleolus, weak pulses Applying compression
Venous Venous hypertension Medial lower leg, edema, heavy drainage, pulses present Expecting severe pain relieved by dependency
Neuropathic Loss of protective sensation Plantar surface, painless, callus Skipping offloading

Dressing selection by moisture

ConceptMeaningKey differenceCommon trap
Hydrogel Donates moisture For dry or minimally draining wounds Using it on a heavily draining wound
Alginate Highly absorptive fiber dressing For heavy exudate Using it on a dry wound
Hydrocolloid Occlusive, supports autolysis For low to moderate exudate, no infection Using it on infected wounds
Foam Absorptive cushioning dressing For moderate to heavy exudate Assuming it donates moisture

Burn depth

ConceptMeaningKey differenceCommon trap
Superficial Epidermis only Red, painful, no blisters Expecting blisters
Superficial partial-thickness Upper dermis Blisters, very painful, blanches Expecting grafting
Deep partial-thickness Deep dermis Less pain, slow healing, scarring risk Expecting quick healing
Full-thickness Through dermis Leathery, insensate, needs grafting Expecting severe pain in the wound

Exam traps

Each trap is an answer that looks right. Learn the clue that should change your mind.

  1. Compression for every leg wound

    What candidates pick
    Apply multilayer compression to a lower leg ulcer.
    Why it looks right
    Compression is standard for many leg wounds.
    Why it's wrong
    Compression on arterial insufficiency can worsen ischemia; check pulses and ABI first.

    Clue to watch for Painful distal wound, weak pulses, pallor on elevation.

  2. Debride stable heel eschar

    What candidates pick
    Sharply debride dry eschar on an ischemic heel.
    Why it looks right
    Removing necrotic tissue usually helps healing.
    Why it's wrong
    Stable dry eschar on an ischemic limb acts as a protective cover and should be left in place.

    Clue to watch for Dry, intact eschar with poor perfusion.

  3. Stage under eschar

    What candidates pick
    Assign Stage 3 or 4 to a wound covered with eschar.
    Why it looks right
    The wound looks deep.
    Why it's wrong
    If the base cannot be seen, the injury is unstageable until debridement reveals it.

    Clue to watch for Base covered by slough or eschar.

  4. Moisture for a wet wound

    What candidates pick
    Pick hydrogel for a heavily draining venous ulcer.
    Why it looks right
    Moist healing is a core principle.
    Why it's wrong
    Excess moisture macerates the periwound; heavy exudate needs an absorptive dressing.

    Clue to watch for Heavy drainage described.

  5. Comfort positioning after burns

    What candidates pick
    Place pillows under the knees and flex the neck.
    Why it looks right
    Patients prefer these positions and they reduce pain.
    Why it's wrong
    Comfort positions match contracture patterns; anti-deformity positioning is required.

    Clue to watch for Burns over flexor surfaces.

  6. Heat on an insensate foot

    What candidates pick
    Use a hot pack to improve circulation in a diabetic foot.
    Why it looks right
    Heat increases blood flow.
    Why it's wrong
    Loss of protective sensation and poor circulation make burns likely.

    Clue to watch for Monofilament testing shows loss of protective sensation.

Answer framework

Use this sequence for any wound or burn question.

  1. Describe the wound fully: location, size, depth, tissue type, exudate, odor, periwound skin and pain.
  2. Check perfusion and sensation with pedal pulses, capillary refill, ABI and monofilament testing before choosing compression, heat or debridement.
  3. Classify the cause or stage: arterial, venous, neuropathic or pressure, or burn depth and body surface area.
  4. Pick debridement and a dressing that fit the tissue and moisture, avoiding occlusion over infection and debridement of stable ischemic eschar.
  5. Address the cause with offloading, compression, positioning, nutrition or education, and protect the skin from friction, shear and maceration during care so that new damage does not appear.

Practice question

A patient with paraplegia has a sacral wound. Examination shows full-thickness skin loss with visible subcutaneous fat and granulation tissue. No bone, tendon or muscle is visible, and the wound base is not obscured. How should this wound be staged?

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Study strategy

This domain rewards tables. Build four of them: pressure injury stages, burn depths, wound types by cause, and dressing categories by moisture and indication. Use photos from open wound care resources to test yourself, because the exam describes wounds in visual terms such as punched out, beefy red granulation or yellow slough.

Next, link each wound type to its cause and the intervention that addresses that cause: offloading for neuropathic ulcers, compression for venous disease, revascularization referral for arterial wounds and pressure redistribution for pressure injuries. Add a short list of safety rules, such as not compressing ischemic limbs and leaving stable heel eschar alone.

Because there are only about ten items here, plan a focused block of study rather than several weeks. Review burn rehabilitation positioning and graft precautions, practice body surface area calculations, then finish with mixed integumentary questions and check every missed item against your four tables.

FAQ

How much of the NPTE-PT is the Integumentary System?

The Integumentary System has 8 to 11 of the 180 scored items, about 4 to 6 percent of the scored exam.

Do I need to memorize the rule of nines?

Yes. Know the adult values and that children have proportionally larger heads, which is why the Lund-Browder chart is preferred for pediatric burns.

Which pressure injury staging system is used?

Study materials follow the National Pressure Injury Advisory Panel stages: 1 to 4, unstageable and deep tissue pressure injury.

How detailed are dressing questions?

Expect category-level choices, such as hydrogel versus alginate, based on exudate, tissue type and infection rather than brand names.

Are skin cancers on the NPTE-PT?

Recognition and referral are fair game. Know the ABCDE warning signs for melanoma and when a lesion should be checked by a physician.

What does movement analysis mean for skin?

FSBPT lists friction, shear, pressure and scar mobility. Think about how transfers, bed positioning and scar tissue across joints affect skin integrity and motion.

Test your Domain 4 knowledge

You have reviewed wound examination, classification and treatment choices. Check that you can stage, classify and choose a dressing quickly under exam timing.

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