Dermatology
05
05

Wound Care &
Skin Integrity

WestNet Medical • Module 05 • Wounds, Pressure Injury & Skin Dignity
WestNet Unified Health Platform • WestNet Catalog 731985456604 • ISBN 978-0-XXXXX-XXX-X (Pending)
CE Accreditation Path: ANCC • ACCME • CARNA
Last updated: June 2026
Core Learning Objective

Learners will read skin breakdown as a downstream signal — of nutrition, perfusion, immobility, moisture, and how a person is cared for — rather than a local skin problem. Stage pressure injuries accurately, assess wounds with the TIME framework, recognize dermatologic emergencies before they kill, and treat the whole person with prevention-first, observation-first, dignity-first care.

WestNet Medical
Clinical Education Division • Unified Health Platform

“A pressure injury is rarely a failure of skin. It is a failure of turning, of feeding, of perfusion, of attention — the skin is simply the first place the neglect becomes visible. The western reflex treats the dressing and ignores the cause. WestNet treats the human: relieve the pressure, feed the tissue, restore the blood supply, and protect the dignity of the person whose skin you are uncovering.”

Published By

WestNet Medical Publications
A division of WestNet North America Inc.
medical.westnet.ca

Co-Published With

WestNet Humanitarian Services (WHS)
UN Supplier • Registered NGO
www.westnet.ngo

WestNet Catalog (UPC-A): 7 31985 45660 4
ISBN 978-0-XXXXX-XXX-X (Pending) • First Edition

7 31985 45660 4
WestNet Medical Publications

Continuing Education Information

CE
FieldDetail
Module05 of 12 — Dermatology / Wound Care
Contact Hours2.5 (Pending ANCC / ACCME / CARNA approval)
Target AudienceRNs, LPNs, RPNs, Wound & Ostomy Nurses, Health Care Aides, Physiotherapists, Dietitians, Licensed Clinicians
PublicationWestNet Medical Publications • Catalog 731985456604 • ISBN Pending
DisclosureEducational content. Does not replace facility policy, physician orders, wound-care formulary, or jurisdictional scope-of-practice requirements.

Program Preface

§ 01

This module was developed from bedside wound-care workflow analysis across North American acute and long-term care settings — not from product brochures or dressing-company education alone. WestNet HealthOS was built because the conventional wound workflow too often treats the hole in the skin while ignoring the body that produced it.

Module 05 is not anti–wound-care. It is anti–surface-only care — the kind that orders an expensive dressing for a Stage 4 sacral wound while the patient is malnourished, dehydrated, immobile, and lying on the same pressure point for the eighth hour running.

WestNet Position

The dressing is the smallest part of wound healing. Nutrition, perfusion, pressure relief, moisture balance, and consistent human attention do the work. A wound that will not heal is almost always a body that is not being supported to heal. Observe the whole person first; choose the dressing last.

Skin Is Never “Just Skin”

§ 02

The skin is the body’s largest organ and its most honest one. It cannot hide what is happening underneath. A breakdown over the sacrum, the heel, or the ischium is not a local accident — it is the visible endpoint of a chain: too little protein and fluid to rebuild tissue, too little blood flow to deliver it, too much pressure for too long, too much moisture macerating the surface, and too few hands turning and checking the patient.

Surface-Only Model vs. WestNet Whole-Person Model SURFACE-ONLY DEFAULT 1. See the wound 2. Order a dressing 3. Re-dress, repeat, stall Outcome: Wound persists WESTNET MODEL 5 1. Read the whole body 2. Fix cause: feed, perfuse, offload 3. Dress to support, not replace Outcome: Wound closes A DRESSING IS A TOOL • NOT A TREATMENT PLAN
Clinical Reality

When staff lead with the dressing, they stop seeing the body. The wound becomes a task on the cart rather than a message from the patient. That is not wound care — that is housekeeping with a sterile field.

The Four Pillars of WestNet Skin Integrity

§ 03

Skin heals on four legs. Remove any one and the wound stalls no matter how advanced the dressing. These pillars are the lens through which every wound in this module is read.

Pillar I

Nutrition

Tissue is rebuilt from protein, calories, vitamin C, zinc, and fluid. A malnourished patient cannot close a wound — no dressing substitutes for the building blocks. Screen, feed, and involve a dietitian early (see Module 03).

Pillar II

Perfusion & Oxygen

Healing needs blood. Hypotension, peripheral arterial disease, anaemia, smoking, and uncontrolled diabetes starve the wound bed. Assess pulses, capillary refill, and glucose — a wound on an ischaemic limb will not heal until flow is restored.

Pillar III

Pressure, Moisture & Mobility

Unrelieved pressure and shear kill tissue from the inside out; excess moisture macerates it from the outside in. Reposition, offload, manage incontinence, and keep skin clean and balanced — not too wet, not too dry.

Pillar IV

Attention & Dignity

Wounds are found, prevented, and healed by people who look. Consistent skin inspection, gentle handling, and respect for the exposed patient are clinical interventions — not courtesies. The most reliable wound prevention tool is a clinician who pays attention.

Pressure Injury Staging

§ 04

Accurate staging drives the right plan and the right resources. Staging describes the deepest tissue type visible — it is not a healing timeline, and a healing wound is never “back-staged” (a healed Stage 4 is a “healed Stage 4 pressure injury,” not a Stage 2). The NPIAP system[2] is summarised below; the interactive Stager in §13 lets you practise.

Pressure Injury Staging — Depth of Tissue Involvement EACH STAGE REACHES ONE LAYER DEEPER • STAGE = DEEPEST TISSUE VISIBLE Stage 1 Non-blanchable erythema Skin intact · no open wound Stage 2 Partial-thickness loss Exposed dermis · shallow/blister Stage 3 Full-thickness loss Fat visible · no bone/tendon Stage 4 Exposed bone / tendon / muscle Deepest · visible or palpable LAYERS (top→bottom): Epidermis Dermis Subcutaneous fat Muscle / bone
Pressure Injury Depth by Stage (NPIAP) Epidermis Dermis Subcutaneous fat Muscle / bone Stage 1 intact, non-blanchable Stage 2 partial thickness Stage 3 into fat Stage 4 bone / tendon slough / eschar Unstageable obscured
The Six Categories

Stage 1 — intact skin, localized non-blanchable erythema. Stage 2 — partial-thickness loss, exposed dermis (shallow, pink/red, moist; or an intact/ruptured serum blister). Stage 3 — full-thickness loss into subcutaneous fat; slough may be present but bone/tendon not exposed. Stage 4 — full-thickness loss with exposed/palpable bone, tendon, or muscle. Deep Tissue Injury (DTI) — intact or non-intact skin with persistent deep red, maroon, or purple discolouration. Unstageable — full-thickness loss where the base is obscured by slough or eschar; depth cannot be determined until the bed is cleared.

Do Not Confuse

Moisture-associated skin damage (incontinence dermatitis), skin tears, and arterial/venous ulcers are not pressure injuries and must not be staged as such. Stable, dry, intact eschar on an ischaemic heel is the body’s natural cover — do not debride it without confirming perfusion.

Clinical Pearls
  • Reposition q2h and offload the heels. The heel has almost no padding between skin and bone — float it off the bed on a pillow under the calf rather than under the heel itself; never let a Stage 1 sit unturned.
  • Run the SSKIN bundle every shift — Surface, Skin inspection, Keep moving, Incontinence/moisture, Nutrition & hydration (see §7). Prevention is cheaper, faster, and kinder than any dressing.
  • Deep purple or maroon discolouration of intact skin is a deep-tissue injury — not a bruise and not a Stage 1. The damage is already at the bone–muscle interface and may open into a Stage 3/4 within days; offload and escalate now.
  • Healing needs protein, perfusion, and moisture balance. A wound that stalls is a whole-body signal: feed the tissue, restore the blood supply, and keep the bed moist–not–wet — the skin is reporting on the body behind it.

At-a-Glance — Stage Cues & Escalation. A bedside quick-reference for the six categories. Stage describes the deepest visible tissue; an obscured base cannot be numbered. Use it to orient, not to replace a hands-on assessment.

CategoryWhat you seeEscalate / act when
Stage 1Intact skin, localized non-blanchable erythema (often over a bony prominence)Offload immediately and intensify SSKIN — a Stage 1 left unturned becomes an open wound
Stage 2Partial-thickness loss; shallow pink/red moist bed, or an intact/ruptured serum blisterFind and remove the pressure source; escalate if it deepens or shows infection signs
Stage 3Full-thickness loss into subcutaneous fat; slough may be present, no bone/tendon visibleWound-care referral; reassess nutrition and perfusion; escalate if undermining or stalling
Stage 4Full-thickness loss with exposed/palpable bone, tendon, or muscleSpecialist (wound/surgical) referral now — osteomyelitis and sepsis risk are real
Deep Tissue InjuryPersistent deep red, maroon, or purple intact or non-intact skin — not a bruiseOffload and escalate now; it can open into a Stage 3/4 within days
UnstageableFull-thickness loss whose base is hidden by slough or eschar; depth unknownRefer for debridement (per scope/order) — but never debride stable dry eschar on an unperfused limb
Reading the woundHealing — leave it to workInfected / deteriorating — escalate
Tissue in the bedBeefy-red granulation, advancingIncreasing slough or new necrosis; friable, bleeds easily
ExudateStable or decreasing, serousRising volume, cloudy/purulent, new odour
Peri-wound & edgePink epithelium advancing from the edgeSpreading erythema, warmth, oedema; rolled or static edge
Pain & the patientStable or easing; patient systemically wellNew or rising pain; fever, tachycardia — suspect spreading infection
When to Escalate — Don’t Sit On It

Any of the following warrants prescriber/specialist review rather than another dressing change: a wound that has not shrunk in 2–4 weeks of appropriate care; new or spreading erythema, warmth, purulence, or odour; exposed bone/tendon or a probe-to-bone; rapidly advancing redness with pain out of proportion (see §08 — rule out necrotizing fasciitis); or deep purple intact skin. Verify staging definitions and management against your current local wound-care protocol and formulary — these vary by facility and jurisdiction.

Healing Capacity — Why Some Skin Cannot Repair

§ 05

Two patients with identical wounds heal at completely different rates — because healing is a whole-body capacity, not a property of the wound. The body must have the raw materials (nutrition), a delivery system (perfusion and oxygen), and an absence of ongoing injury (pressure, moisture, infection). When that capacity is low, the most advanced dressing on the market still cannot close the wound.

This reframes the central question from “What dressing should I use?” to “What is stopping this body from healing — and can I fix it?” A wound that has not improved in two to four weeks of appropriate care is almost never a dressing problem. It is a perfusion, nutrition, pressure, or undiagnosed-cause problem.

The Four Drivers of Healing

Nutrition • Perfusion & Oxygen • Pressure / Moisture Control • Mobility. Every rung of the Healing Ladder in §10 is an expression of these four. Optimise them and most wounds heal themselves.

Interactive Clinical Partner
Healing Capacity — Care Calibrator
Slide to estimate the patient’s overall capacity to heal from what you know: nutritional status, perfusion (pulses, glucose, smoking, anaemia), mobility, and moisture/continence control. The tool adjusts your recommended priorities in real time. This is a teaching aid — it never replaces a formal risk assessment (e.g., Braden) or clinical judgment.
5/10
Moderate capacity
0 · Minimal5 · Moderate10 · Robust
Care Priorities
Optimise the modifiable drivers and protect the wound while the body catches up.
    Lower capacity → the dressing matters less and the body matters more. Fix nutrition, perfusion, and offloading first; a wound stalled for 2–4 weeks signals an unaddressed driver, not the wrong dressing.

    Myth vs. Evidence. Wound care attracts more folklore than almost any field in nursing. None of the beliefs below come from bad intentions — they come from a system that rewards the visible dressing over the invisible cause. The evidence is consistent: healing is built from protein, perfusion, offloading, and glycaemic control. Treat the person, not the label — make the human whole, and the skin follows.

    Common beliefWhat the evidence supports
    “The right dressing will heal the wound.”A dressing protects and optimises the local bed — it does not supply the protein, blood flow, or pressure relief that actually rebuild tissue. The international pressure-injury guideline and wound-bed-preparation evidence put nutrition, perfusion, and offloading first; the dressing supports that work.[1]
    “Nutrition is a side issue once the wound is dressed.”Inadequate protein, energy, and fluid are among the most common reasons a wound stalls. Screening and correcting malnutrition is a core healing intervention, not an extra — involve a dietitian early (see Module 03 — Clinical Nutrition).[6]
    “A diabetic foot wound is a dressing problem.”It is a perfusion, pressure (offloading), and glycaemic-control problem first. Uncontrolled glucose and arterial disease blunt healing and raise infection risk; the dressing is downstream of all three (see Module 10 — Diabetes & Endocrine).
    “Pour antiseptic in and it will clean itself out.”Cytotoxic agents (full-strength iodine, peroxide) can harm the very cells that heal. Gentle cleansing with saline or a non-cytotoxic cleanser, plus removing non-viable tissue, is what prepares the bed.
    “Stalled wound? Change the dressing more often.”A wound that has not improved in 2–4 weeks of appropriate care signals an unaddressed driver — perfusion, nutrition, pressure, or an undiagnosed cause. Re-examine the body, not the product shelf.
    Said Diplomatically at the Bedside

    None of this means a colleague who reaches for a dressing is wrong — the dressing is necessary, just not sufficient. The respectful reframe is additive, not corrective: “The dressing is doing its job; let’s make sure the body can do its part too — how are we doing on protein, hydration, turning, and glucose?” That keeps the team aligned and the focus on the human, not a turf debate.

    The TIME Wound Assessment Framework

    § 06

    TIME is the structured way to read a wound bed at every dressing change, so that wound-bed preparation is systematic rather than habitual. Walk the four letters in order — each one points to a specific, repeatable action. None of them require an exotic product; most require only a clinician willing to look closely.

    T — Tissue

    Tissue, Non-viable or Deficient

    Identify what is in the bed: healthy granulation (beefy red), unhealthy slough (yellow), or necrotic eschar (black). Non-viable tissue feeds bacteria and blocks healing.

    Act: Debride non-viable tissue (per scope/order) — unless it is stable dry eschar on an ischaemic limb.
    I — Infection

    Infection / Inflammation

    Look for the signs of local infection — increasing pain, erythema, warmth, oedema, odour, and rising exudate. Distinguish normal inflammation from spreading infection.

    Act: Cleanse, consider topical antimicrobials for local infection; systemic signs (fever, spreading redness) demand prescriber review.
    M — Moisture

    Moisture Balance

    The bed should be moist, not wet, not dry. Too much exudate macerates the edges; too little desiccates the bed and stalls cell migration.

    Act: Match the dressing to the exudate — absorptive for heavy, hydrating for dry. Protect the peri-wound skin.
    E — Edge

    Edge / Epithelialisation

    The wound edge tells you whether it is healing. Advancing pink epithelium is good; rolled (epibole), undermined, or static edges signal a stalled wound.

    Act: Re-assess the whole picture — a non-advancing edge means a driver (perfusion, nutrition, pressure, infection) is unaddressed.
    Do
    • Measure length × width × depth and track the trend over time
    • Probe for undermining and tunnelling, and chart by clock position
    • Photograph with consent and a measuring guide for objective tracking
    • Cleanse with normal saline or a non-cytotoxic wound cleanser
    • Re-assess the four healing drivers at every non-progressing visit
    • Protect the peri-wound skin with a barrier
    Don’t
    • Pour cytotoxic agents (full-strength iodine, peroxide) into a clean bed
    • Leave the same dressing plan running on a stalled wound “to see”
    • Pack a wound so tightly it impairs perfusion to the bed
    • Debride dry, stable eschar before confirming the limb is perfused
    • Treat heavy exudate by changing more often instead of fixing the cause
    • Chart “dressing changed, tolerated well” with no bed description
    Golden Rule

    TIME is not a checklist you run past a wound. It is a conversation you have with it. The bed is telling you what the body needs — the clinician who reads it closely rarely needs the expensive dressing.

    Prevention First: The SSKIN Bundle

    § 07

    The overwhelming majority of pressure injuries are preventable. Prevention is cheaper, safer, and infinitely kinder than treatment — and it is the truest expression of attention. Run the SSKIN bundle on every at-risk patient, every shift.

    S

    Surface

    Provide the right support surface — pressure-redistributing mattress or cushion matched to risk. The bed and chair are clinical equipment, not furniture.

    S

    Skin Inspection

    Inspect skin head-to-toe at least each shift, especially bony prominences and under devices. Non-blanchable redness is a Stage 1 alarm — act, do not chart and move on.

    K

    Keep Moving

    Reposition on an individualised schedule; offload heels entirely. Even small, frequent shifts of weight relieve the capillary-crushing pressure that kills tissue.

    I & N

    Incontinence & Nutrition

    Manage moisture with prompt cleansing and a barrier; treat incontinence as a skin emergency. Screen nutrition and hydration — the tissue cannot rebuild without fuel.

    Always Reassess

    A new or worsening pressure injury is a sentinel event, not an inevitability. When one appears, ask what in the bundle failed: was the surface wrong, the turning skipped, the nutrition unaddressed, the device missed, the patient too unstable to reposition? Fix the system, not just the skin.

    Dermatologic Red Flags That Kill

    § 08

    Most skin complaints are benign. A handful are emergencies that look ordinary for a few critical hours and then become catastrophic. The skill is not memorising rashes — it is knowing which features mean stop everything and escalate now.

    The cardinal rule of these emergencies: pain out of proportion to what you can see, rapid progression, and systemic illness (fever, tachycardia, confusion) are far more alarming than the appearance of the skin itself.

    Necrotizing Fasciitis (Surgical Emergency)

    Suspect when pain is wildly out of proportion to visible findings, the redness advances by the hour (mark and time it), the skin develops dusky/violaceous patches, blisters, crepitus, or anaesthesia, and the patient looks systemically toxic. A rising LRINEC-style picture (high CRP, WBC, low sodium) supports the suspicion[3] — but a normal score never rules it out. This needs urgent surgical and prescriber review, not a dressing. Delay costs limbs and lives.

    Cellulitis (Common — but Watch It)

    Cellulitis is warm, tender, spreading erythema with a relatively gradual onset and proportionate pain, usually without systemic toxicity. It is treated medically. The danger is anchoring: a wound nurse who labels every red leg “cellulitis” will eventually miss the necrotizing case hiding inside one. Re-examine, mark the border, and escalate if it outpaces the antibiotics.

    Red Flags — Escalate Now
    • Pain out of proportion to the exam.
    • Rapid spread, dusky skin, bullae, or crepitus.
    • Systemic toxicity — fever, tachycardia, hypotension.
    • Skin sloughing or mucosal involvement (SJS/TEN).
    • Deep purple but intact skin (deep-tissue injury).

    These are surgical and dermatologic emergencies — escalate now.

    The “Be Human” Protocol for Skin Care

    § 09

    Wound care is one of the most intimate acts in clinical practice. It exposes the body, often in its most vulnerable places, frequently in patients who cannot move, speak for themselves, or refuse. The WestNet protocol treats every dressing change as an encounter with a person — not a procedure on a body part.

    Consent: Explain before you uncover. Ask permission to look and to touch — every time, even with the non-verbal patient.
    Cover: Drape everything you are not examining. Expose the smallest area for the shortest time. Warmth and privacy are clinical care.
    Gentleness: Soak adherent dressings off, never rip. Pain during care is a finding, not a given — pre-medicate when needed.
    Pace: Move at the patient’s tolerance, not the cart’s schedule. Narrate each step so nothing is a surprise.
    Name: Use it. Speak to the person, not over them. Not “the sacral wound in 4B.”

    What to Say — and What Not To. The principles above become real in the words you choose at the bedside. The phrasing below is a starting script for an exposed, anxious, or non-verbal patient and their family — adapt it to the person in front of you.

    Say This
    • “I’m going to look at your skin now to keep it healthy — is that alright?”
    • “I’ll only uncover the small area I need, and cover you straight back up.”
    • “Tell me if anything hurts and I’ll stop — we go at your pace, not mine.”
    • “This is a pressure area we caught early; here’s what we’re doing about it.”
    • To family: “You know them best — what helps them feel comfortable during care?”
    • To a non-verbal patient: narrate each step — “I’m lifting the dressing now; this may feel cool.”
    Don’t Say
    • “This is the worst bedsore I’ve seen” — alarming, and the patient hears every word.
    • “You let this happen by not turning” — blame stalls care and wounds dignity.
    • “Just relax, it’s nothing” — dismissing pain or fear breaks trust.
    • Talking over the patient to a colleague as if they aren’t there.
    • “The sacral wound in 4B” — reducing a person to a room and a hole.
    • Rushing or ripping a dressing to stay on the cart’s schedule.

    WestNet Healing Ladder

    § 10
    Rung 1
    Observe the Whole Person
    Inspect skin head-to-toe. Read the body, not just the wound. Identify who is at risk before any breakdown appears.
    Rung 2
    Relieve Pressure & Moisture
    Offload, reposition, choose the right surface, manage incontinence. Stop the ongoing injury before anything else.
    Rung 3
    Feed & Perfuse the Tissue
    Optimise nutrition, hydration, glucose, and circulation. The body cannot rebuild what it is not supplied to build.
    Rung 4
    Prepare the Wound Bed (TIME)
    Debride non-viable tissue, control infection, balance moisture, support the edge. Cleanse gently, dress to the bed’s needs.
    Rung 5
    Reassess the Trend, Not the Snapshot
    Measure and track. A wound stalled 2–4 weeks means a driver is unaddressed — escalate before changing the dressing again.
    Escalate
    Specialist & Red-Flag Response
    Wound, ostomy, vascular, surgical, or dermatology referral. Any red flag — nec fasc, SJS/TEN, deteriorating limb — escalates immediately. Document fully.

    Closure vs. Coverage

    § 11
    Time in care → Wound size Closure (healed) WestNet: treat the cause → closes Dress-only default: covered, not closing A Covered Wound Is Not a Healing Wound

    A wound that is dressed is not the same as a wound that is healing. The surface-only reflex measures success by how clean the dressing looks on rounds — the wound is covered, so it is “managed.” WestNet measures whether the wound is smaller, shallower, and advancing at the edge over time. Coverage hides the problem; closure solves it. If the trend is flat, the dressing is not the answer — the body is asking for something the dressing cannot give.

    When Prevention Fails: Composite Patterns

    § 12

    The following patterns recur across North American wound-care admissions. This section presents a composite case drawn from recurring systemic failures — not any single patient, institution, or jurisdiction. The lesson is architectural, not individual.

    Pattern: Dress the Wound, Ignore the Body

    An immobile patient develops sacral redness. It is charted but not acted on. Repositioning is documented but not consistently delivered. The patient is eating almost nothing; no nutrition referral is made. Days later the redness is a Stage 3 ulcer. The response is an escalating series of premium dressings — while the patient remains malnourished, dehydrated, and turned only sporadically. The wound deepens. The dressing budget rises. The cause is never touched.

    What Module 05 Teaches

    Every safeguard in the chain fails when staff treat the surface and ignore the system. At Rung 1 of the Healing Ladder — observing the whole person — this injury should have been prevented entirely. Instead the default pathway spends heavily to cover a wound that consistent turning, a dietitian, and attention would have closed, or never allowed to open. Quiet dressings were mistaken for healing.

    Pressure Injury Stager — Practise the Call

    § 13

    Staging drives the plan. Select the features you actually observe at the wound — the tool returns the most likely stage and a management bundle in real time. It mirrors the NPIAP logic: the deepest tissue type visible determines the stage, and an obscured base means you cannot stage at all. This is a teaching aid; it never replaces a hands-on assessment by a qualified clinician.

    Select features observed
    Tick the features present at the wound to estimate the stage and management bundle.
    How to Use It

    Stage describes the deepest tissue you can see. If slough or eschar obscures the base, the wound is Unstageable until cleared. Persistent deep purple/maroon discolouration of intact skin is a Deep Tissue Injury, which can deteriorate rapidly. The tool guides the call; the bedside clinician makes it.

    Cellulitis or Necrotizing Fasciitis? The Differentiator

    § 14

    This is one of the highest-stakes calls in wound care. Cellulitis is common and treated medically; necrotizing fasciitis is a surgical emergency that can look like cellulitis for the first few hours, then take a limb or a life. Mark what you actually observe — the tool weighs the picture and flags the critical next step.

    Points toward Cellulitis

    Common • managed medically

    Points toward Necrotizing Fasciitis

    Surgical emergency • act now
    CellulitisUnclearNec Fasc
    Awaiting input
    Mark the features you observe
    Clinical Safety

    If any hard red flag is present — pain out of proportion, rapid hourly progression, dusky skin or blisters, crepitus, anaesthesia, or systemic toxicity — treat it as necrotizing fasciitis and escalate for urgent surgical review regardless of the meter. A normal LRINEC-style picture never rules it out. This tool supports — never replaces — prescriber and surgical assessment.

    Document This, Not That

    § 15

    The words in the chart shape the care that follows. Vague, judgemental, or surface-only notes hide the cause and stall the wound. Objective, observation-first language drives the right action — and protects the patient’s dignity. Tap any card to flip the weak note into one that works, and see why it lands differently.

    Wound Types — A Differential Deep-Dive

    § 16

    “Chronic wound” is not a diagnosis — it is a description. Before a single dressing is chosen, the clinician must answer the question the wound is really asking: what caused you, and what is keeping you open? A venous ulcer treated as arterial, or a pyoderma treated as pressure, will never close. The five great families below cover the overwhelming majority of wounds you will meet, and each one points to a different cause that must be fixed first.

    Wound familyTypical locationClassic appearanceCause to fix first
    Pressure injuryBony prominences — sacrum, heels, ischium, occiput, under devicesOver a bone; staged by depth; non-blanchable erythema to exposed boneUnrelieved pressure / shear — offload (see §04, §07)
    Venous leg ulcer“Gaiter” area — medial lower leg above the ankleShallow, irregular, wet; haemosiderin staining, oedema, varicositiesVenous hypertension — compression (only if arterial flow adequate)
    Arterial / ischaemic ulcerToes, foot, lateral malleolus, pressure points“Punched-out,” dry, pale/necrotic base; cold limb, absent pulses, severe painInadequate perfusion — restore blood flow; do NOT compress
    Diabetic foot ulcerPlantar surface, under metatarsal heads, toe tipsRound, callused rim, often painless (neuropathy); may probe deepPressure (offloading) + glucose + perfusion (see §18)
    Skin tearForearms, hands, lower legs of fragile/elderly skinTraumatic flap; epidermis separated from dermis; a known causeTrauma + skin fragility — preserve the flap, protect the skin (see §19)
    The Question Behind Every Wound

    Two wounds can look identical and need opposite treatment. The lethal example: a venous ulcer is treated with compression and heals; an arterial ulcer treated with compression loses the limb. Always assess perfusion before you commit to a plan. The appearance tells you what it looks like; the cause tells you what to do.

    Atypical Wounds — Think Again

    If a wound does not fit a common family, heals abnormally, has rolled/violaceous “heaped” or undermined purple borders, or fails appropriate care, think beyond the usual: pyoderma gangrenosum (do not debride — it worsens), vasculitis, malignancy (a Marjolin ulcer in a chronic wound), or calciphylaxis. These need diagnosis, not another dressing — refer.

    Interactive Clinical Partner
    Wound-Type Identifier

    Pick the features you actually observe. The tool leans toward the most consistent wound family and names the cause to address first. A teaching aid — it never replaces vascular assessment or clinician judgment.

    Select the features you observe to identify the likely wound family.

    Leg Ulcers: Venous, Arterial & Mixed

    § 17

    The lower leg is where the most dangerous wound-care mistake in nursing happens: applying compression to a limb that cannot tolerate it. Venous and arterial ulcers can look superficially similar, yet their treatments are opposites. The whole-person discipline of this module — assess the cause before the dressing — is nowhere more literally life-and-limb than here.

    Venous Ulcer

    Venous hypertension • compression helps

    Medial “gaiter” area above the ankle. Shallow, irregular border, wet/exudative bed. Surrounding skin shows haemosiderin (brown) staining, oedema, varicose veins, and lipodermatosclerosis. Pulses usually present; pain relieved by elevation. Cause: blood pools and pressure rises in the venous system.

    Arterial Ulcer

    Ischaemia • do NOT compress

    Toes, foot, lateral malleolus, pressure points. “Punched-out,” well-defined, dry, pale or necrotic base, minimal exudate. Limb is cold, hairless, shiny; pulses weak/absent; pain is severe and worse with elevation, better hanging down. Cause: the artery cannot deliver blood.

    The ABPI Rule — Verify Before You Compress

    Compression is the cornerstone of venous-ulcer healing — and a limb-threatening error on an ischaemic leg. An ankle–brachial pressure index (ABPI) is checked before compression: a normal range supports full compression; a low value contraindicates it; a high value can be falsely elevated (calcified vessels in diabetes) and needs specialist interpretation. If you cannot confirm arterial flow is adequate, do not apply compression — refer. Verify ABPI thresholds and the compression formulary against your current local vascular protocol.

    Mixed-Aetiology Ulcers

    Many older patients have both venous and arterial disease. These “mixed” ulcers require specialist assessment to determine whether (and how much) reduced compression is safe. Never assume; never guess. When the picture is mixed or unclear, the safe default is no compression until a vascular clinician has weighed in.

    FeatureVenousArterial
    SiteMedial gaiter areaToes, foot, lateral malleolus
    Edge / baseIrregular, shallow, moistPunched-out, deep, dry/necrotic
    ExudateModerate–heavyMinimal
    PulsesUsually presentWeak or absent
    PainBetter with elevationWorse with elevation; eased hanging down
    Surrounding skinHaemosiderin staining, oedema, varicositiesCold, pale, shiny, hairless
    CompressionCornerstone (if ABPI adequate)Contraindicated — restore flow first

    Diabetic Foot Ulcers & Offloading

    § 18

    The diabetic foot ulcer is the clearest case in this module of a wound that is never a dressing problem. Three forces converge: neuropathy (the patient cannot feel the injury), ischaemia (perfusion is impaired), and unrelieved pressure (the patient keeps walking on it). Add elevated glucose blunting immunity and healing, and a small ulcer becomes an amputation. The dressing is the least of it; offloading, perfusion, and glycaemic control do the work (see Module 10 — Diabetes & Endocrine).

    Driver I

    Neuropathy

    Loss of protective sensation means the patient feels no warning pain. They walk on a wound, a stone in the shoe, or an ill-fitting boot for days. Inspect the feet every visit — including between the toes and the sole — because the patient cannot.

    Driver II

    Ischaemia

    Peripheral arterial disease starves the wound. Assess pulses and perfusion; a non-healing diabetic foot ulcer with poor flow needs urgent vascular review. Perfusion is a prerequisite for any plan — not an afterthought.

    Driver III

    Pressure / Offloading

    Healing is impossible while the patient walks on the ulcer. Offloading — total-contact cast, removable walker, or specialist footwear — is the single most important intervention. A dressing under a weight-bearing foot is a dressing being crushed.

    Driver IV

    Glucose & Infection

    High glucose impairs white cells and healing; the diabetic foot infects fast and quietly. “Probe to bone” raises osteomyelitis suspicion. Control glucose with the team and treat infection early and seriously.

    The “Probe to Bone” Sign

    If a sterile probe in the ulcer reaches bone, suspect osteomyelitis until proven otherwise — escalate for imaging and specialist review. A diabetic foot ulcer with spreading redness, swelling, odour, or systemic signs is a limb emergency, not a routine dressing change. The classic trap is the “painless” foot that looks calm while infection tracks deep — neuropathy hides the alarm.

    Wagner & the Multidisciplinary Foot Team

    Diabetic foot ulcers are commonly graded (e.g., the Wagner system, 0–5, by depth and the presence of infection or gangrene) to standardise communication and trigger the right referral. The strongest evidence in this field is for the team: podiatry, vascular, endocrine, wound care, and nursing acting together prevent amputations. The lone dressing change does not. Verify grading and referral pathways against your current local diabetic-foot protocol.

    Do
    • Inspect both feet, between toes and soles, at every contact
    • Offload aggressively — the wound cannot heal while walked on
    • Assess pulses/perfusion and escalate poor flow urgently
    • Debride callus and non-viable tissue (per scope) to see the true wound
    • Treat infection early; probe-to-bone raises osteomyelitis suspicion
    • Partner glucose control with the diabetes team
    Don’t
    • Assume a painless foot is a safe foot — neuropathy masks danger
    • Rely on a dressing while the patient keeps weight-bearing on it
    • Soak diabetic feet or use harsh chemicals between the toes
    • Ignore a stone-in-shoe history or new callus — both precede ulcers
    • Delay vascular review on a cold, pulseless, non-healing foot
    • Chart “dressing changed” without describing depth, probe, and perfusion

    Skin Tears & the Fragile-Skin Patient

    § 19

    A skin tear is a traumatic wound caused by shear, friction, or blunt force that separates the epidermis from the dermis (a partial-thickness tear) or both layers from underlying tissue (a full-thickness tear). They are overwhelmingly a problem of fragile skin — the very old, the very young, the steroid-dependent, the dehydrated — and they are largely preventable. They are not pressure injuries and must not be staged as such.

    ISTAP Classification (Skin Tears)

    The International Skin Tear Advisory Panel groups skin tears by how much of the skin flap remains and can be re-approximated: Type 1 — no skin loss; the flap can be realigned to cover the wound. Type 2 — partial flap loss; the flap cannot fully cover the bed. Type 3 — total flap loss; the wound bed is fully exposed. Classifying guides the dressing and the prognosis; the goal in every type is to preserve viable tissue.

    Managing the Flap

    If a viable flap is present, the single most valuable action is to gently re-approximate it over the wound bed — it is the patient’s own best dressing. Irrigate, ease the flap back into place (a moistened cotton tip helps), and secure with a non-adherent, low-trauma dressing. Mark the dressing with an arrow showing the direction of removal so the next clinician peels toward the flap’s attached base, never lifting it off again.

    Never Use Aggressive Adhesives

    Standard adhesive tape on fragile skin causes the next tear when it is removed — a self-inflicted, iatrogenic wound. Use silicone or non-adherent contact layers and tubular/roll retention rather than tape directly on the skin. Removing a dressing should never create a new wound.

    Prevention is the real treatment. Fragile-skin patients live one careless transfer away from the next tear. The prevention bundle is simple, cheap, and dignified — and it reflects the same attention-first philosophy as the SSKIN bundle in §07.

    P1

    Moisturise

    Twice-daily emollient on fragile limbs measurably reduces skin-tear incidence. Hydrated skin tears less. This is one of the highest-yield, lowest-cost interventions in the whole module.

    P2

    Pad & Protect

    Long sleeves, shin guards, padded bed rails and wheelchair leg-rests, and clearing sharp edges from the environment prevent the blunt knocks that tear thin skin.

    P3

    Handle Gently

    Use proper transfer technique and slide sheets; never drag a limb or grip fragile forearms. Shear during a transfer is the classic mechanism — lift, don’t drag.

    P4

    Hydrate & Nourish

    Systemic hydration and adequate protein make skin more resilient. The same nutrition that closes wounds also helps skin resist tearing in the first place.

    Surgical Wounds & Dehiscence

    § 20

    Most surgical wounds heal predictably by primary intention — clean edges held together by sutures, staples, glue, or strips, sealing within hours and epithelialising over days. The clinician’s job is to protect that closure, recognise when it is failing, and know the difference between normal healing and surgical-site infection (SSI) or dehiscence.

    Healing pathwayWhat it meansTypical example
    Primary intentionEdges approximated and closed; minimal tissue lossSutured surgical incision, clean laceration
    Secondary intentionLeft open to granulate and contract from the base upPressure injury, abscess cavity, dehisced wound
    Tertiary (delayed primary)Left open initially (e.g., for contamination), then closed laterContaminated abdominal wound closed after a few days
    Dehiscence & Evisceration

    Dehiscence is partial or complete separation of a closed surgical wound — often heralded by a sudden gush of serosanguineous fluid and a “giving way” sensation reported by the patient. Evisceration — protrusion of viscera (e.g., bowel) through the wound — is a surgical emergency: cover the exposed organs with saline-moistened sterile gauze, keep the patient still and flat with knees flexed, keep them NPO, and call surgery now. Do not attempt to push anything back in.

    Recognising Surgical-Site Infection (SSI)

    Suspect SSI with increasing pain after the early post-op days, spreading erythema beyond the immediate incision, warmth, swelling, purulent drainage, wound breakdown, or new fever. The honest reading is timing: a little redness on day one is expected; increasing redness, pain, and drainage on day four is a warning. Escalate for prescriber review rather than simply re-dressing.

    Moisture-Associated Skin Damage (MASD)

    § 21

    Excess moisture destroys skin from the outside in — and it is constantly mistaken for a pressure injury, then mistreated. Moisture-associated skin damage (MASD) is inflammation and erosion of the skin from prolonged exposure to urine, stool, sweat, wound exudate, or fistula output. Distinguishing it from a Stage 2 pressure injury is one of the most common — and consequential — bedside calls in this module.

    FeatureMoisture damage (MASD)Pressure injury (Stage 2)
    LocationSkin folds, peri-anal, peri-wound — wherever moisture sitsOver a bony prominence
    Shape / edgesDiffuse, irregular, “blotchy,” ill-definedMore distinct; conforms to the bony point
    DepthSuperficial erosion; rarely full-thickness alonePartial-thickness loss with a defined bed
    CauseMoisture ± frictionPressure / shear over a bone
    First fixRemove the moisture; barrier protectOffload the pressure
    The MASD Family

    IAD (incontinence-associated dermatitis) — from urine/stool. ITD (intertriginous dermatitis) — trapped moisture and friction in skin folds. Peri-wound maceration — from excess exudate. Peristomal/peri-fistula MASD — from effluent. The cause differs but the principle is identical: the skin is wet for too long.

    The Fix: Cleanse, Protect, Contain

    Cleanse gently with a pH-balanced no-rinse cleanser — not harsh soap and a rough cloth. Protect with a barrier (cream, film, or paste) so the skin is shielded before the next episode. Contain the source — a continence plan, appropriate absorbent products, exudate-matched wound dressings, a well-fitted stoma appliance. Treating MASD with a “cream” while leaving the skin soaking is treating the surface and ignoring the cause — the same error this whole module is built to correct.

    Why It Matters

    Macerated, eroded skin is the perfect launch pad for a pressure injury and for infection — the two often co-exist. Moisture and pressure compound each other. Treat incontinence as a skin emergency, not a laundry problem: every hour of contact is more damage. Verify product choices against your facility skin-care formulary.

    Dressing Selection Mastery

    § 22

    The dressing is the smallest part of healing — but choosing it well still matters, because the wrong dressing actively stalls a wound (a dry dressing on a dry bed desiccates it; an absorbent one on a dry bed sticks and traps). The discipline is simple: match the dressing to the wound bed and the exudate, protect the peri-wound skin, and step down as the wound improves. Below is a working knowledge of the major families. None of this overrides your facility formulary.

    Dressing familyBest forWatch out for
    HydrocolloidLight exudate; shallow Stage 2; promotes autolysisNot for heavy exudate or infected wounds; can macerate edges
    HydrogelDry or sloughy beds; donates moisture; aids autolytic debridementWill macerate a wet wound — wrong for heavy exudate
    FoamModerate–heavy exudate; cushioning; many anatomical shapesToo absorbent for a dry bed — can dry it out
    AlginateHeavy exudate; bleeding/packing cavities (very absorbent, gels)Needs moisture to work — dries out and sticks on a dry wound
    HydrofiberHeavy exudate; locks fluid vertically, protecting edgesSame caution as alginate on dry beds
    Transparent filmSuperficial wounds, securing other dressings, protecting at-risk skinNon-absorbent — never on a moderately/heavily exuding wound
    Antimicrobial (e.g., silver, iodine, PHMB)Locally infected or high-bioburden wounds, short coursesNot routine; reassess and step down — not for clean granulating beds
    Non-adherent contact layerFragile beds, skin tears, low-trauma cover under a secondary dressingNeeds a secondary dressing to manage exudate
    The Moisture-Balance Compass

    Everything above reduces to one idea from the “M” of TIME (§06): a dry bed needs moisture donated; a wet bed needs moisture absorbed; a balanced bed needs to be protected and left alone. Get the moisture wrong and even the most expensive product fails. Get it right and a simple dressing usually suffices.

    Interactive Clinical Partner
    Dressing Selector

    Describe the bed in front of you. The selector suggests a dressing category and explains the reasoning — it is a teaching aid, not a product endorsement, and never overrides your facility formulary or a prescriber order.

    Select the wound’s exudate level and bed characteristics for a suggested dressing category.
    Safety

    Dressing names and indications vary by manufacturer and by facility formulary, and infected wounds, ischaemic limbs, and atypical wounds change the rules. Verify every choice against your current local wound-care formulary and the prescriber’s plan. When a wound is not progressing, change the assessment — not just the product.

    Debridement: Methods & Judgment

    § 23

    Debridement is the removal of non-viable tissue — slough and necrotic eschar — that feeds bacteria, harbours biofilm, and physically blocks healing (the “T” of TIME, §06). It is one of the most powerful wound interventions and one of the most consequential to get wrong. The first decision is never how to debride; it is whether to debride at all.

    The First Question: Should You Debride?

    Do not debride stable, dry, intact eschar on an ischaemic or unperfused limb — that dry cover is the body’s natural protection, and removing it on a limb that cannot heal exposes a wound that will not close and may invite infection or amputation. Confirm perfusion first. Debridement is also contraindicated or specialist-only in pyoderma gangrenosum, in actively bleeding or anticoagulated patients (for sharp methods), and wherever it exceeds your scope of practice.

    MethodHow it worksSpeedNotes
    AutolyticThe body’s own enzymes liquefy non-viable tissue under a moisture-retentive dressingSlowGentle, selective, low pain; widely within nursing scope; needs a perfused wound
    EnzymaticA topical enzyme preparation digests non-viable tissueModerateSelective; requires an order; follow product directions exactly
    MechanicalPhysical removal — monofilament pads, irrigation, (historically) wet-to-dryModerateWet-to-dry gauze is non-selective and painful — largely outdated; prefer monofilament/irrigation
    Sharp / surgicalScalpel, scissors, or curette remove non-viable tissueFastMost rapid; requires advanced competency/credentialing and often a prescriber; check scope
    Biological (larval)Sterile medical maggots selectively digest sloughFast (selective)Highly selective; specialist-initiated; useful when surgery is unsuitable
    Interactive Clinical Partner
    Debridement-Method Matcher

    Describe the situation. The matcher suggests a reasonable method and flags when not to debride at all. A teaching aid only — method choice depends on scope, credentialing, perfusion, and a prescriber order.

    Select the wound and patient features to see a suggested debridement approach.
    Scope & Safety

    Sharp/surgical debridement is an advanced skill restricted by jurisdiction and facility credentialing. Never exceed your scope; when in doubt, refer to a wound specialist. Always confirm perfusion before removing eschar, and verify against your current local protocol.

    Biofilm & the Wound-Infection Continuum

    § 24

    Every open wound carries bacteria — contamination is universal and not, by itself, infection. The clinically useful idea is a continuum: bacteria move from harmless presence to active tissue invasion along a spectrum, and the clinician’s task is to recognise where a wound sits and act proportionately. Over-treating contamination wastes antimicrobials and breeds resistance; under-treating invasion costs tissue.

    ContaminationBacteria present, not multiplying. Normal. No action beyond good wound hygiene.
    ColonisationBacteria multiplying, no host harm, healing on track. Still no antimicrobials.
    Local infectionSubtle signs: stalled healing, friable granulation, new pain/odour, rising exudate. Consider topical antimicrobial + wound hygiene.
    Spreading / systemicErythema beyond the wound, warmth, fever, tachycardia. Prescriber review; systemic antibiotics per protocol.
    Subtle (Covert) vs. Overt Local Infection

    Classic infection signs (heat, redness, swelling, pus) are overt. But chronic wounds often show covert signs first: a wound that simply stops progressing, bright-red friable granulation that bleeds easily, increasing or new odour, new wound pain, and pocketing or bridging at the base. A non-healing wound with no obvious pus may still be locally infected — read the subtle signs, not just the dramatic ones.

    Wound Hygiene: Disrupt, Don’t Just Cover

    The evidence-aligned response to biofilm is mechanical and repeated: cleanse the whole wound and peri-wound at every change, debride non-viable tissue to physically break up biofilm (see §23), refashion the edge, and dress — using a topical antimicrobial for a defined period when local infection is suspected, then stepping down. Because biofilm reforms fast, consistency beats potency. This is wound hygiene, not a one-time clean. Antibiotic and antiseptic choices must follow your local antimicrobial-stewardship and wound-care protocols.

    Negative Pressure Wound Therapy (NPWT)

    § 25

    Negative pressure wound therapy — “wound VAC” in common speech — applies controlled sub-atmospheric pressure to a sealed wound through a foam or gauze filler and an occlusive drape connected to a pump and canister. Used for the right wound, it is a powerful adjunct. Used for the wrong wound, it causes serious harm. It is an adjunct, never a substitute for treating the cause.

    Mechanism

    Removes Exudate

    Continuously draws away excess fluid and infectious material, reducing oedema and keeping the bed balanced — especially useful in heavily exuding wounds.

    Mechanism

    Promotes Granulation

    Mechanical micro-deformation of the bed stimulates perfusion and granulation tissue, and the suction draws the wound edges inward (macrostrain), helping contraction.

    Use Case

    Bridges to Closure

    Helps prepare large, deep, or dehisced wounds for delayed closure, flaps, or grafts — and protects certain closed surgical incisions at high risk of breakdown.

    Use Case

    Reduces Dressing Frequency

    A sealed system can stay in place for days, reducing disturbance of the bed and the burden of frequent changes — when the seal and the wound allow.

    Absolute Cautions — Know Before You Apply

    NPWT is contraindicated or hazardous with: untreated osteomyelitis or untreated wound infection; necrotic tissue with eschar still present (debride first); malignancy in the wound; exposed blood vessels, anastomoses, organs, or nerves (risk of catastrophic bleeding — a recognised cause of death); and unexplored fistulae. Bleeding is the most dangerous complication. If a patient on NPWT has frank blood in the canister or tubing, stop and escalate immediately. Application and settings are a prescriber/specialist decision per local protocol.

    Nursing Vigilance During NPWT

    Watch the seal (loss of vacuum stalls therapy and can macerate skin), the canister (volume and colour — frank blood is an emergency), the peri-wound skin under the drape, the foam count (every piece placed must be removed — document the count), and the patient’s pain and systemic signs. NPWT does not excuse neglecting nutrition, perfusion, and offloading — those still do the healing.

    Burns — Depth, Extent & Initial Care

    § 26

    Burns are a wound where the first minutes shape the outcome. Two questions drive everything: how deep is the burn (which governs healing and grafting) and how large is it as a percentage of total body surface area (TBSA, which governs fluids and transfer). The skin’s lost barrier means fluid loss, hypothermia, and infection are immediate threats — a large burn is a whole-body emergency, not a skin problem.

    DepthLayers involvedAppearancePain & healing
    Superficial (1st degree)Epidermis onlyRed, dry, no blisters; blanchesPainful; heals in days, no scar (e.g., sunburn)
    Superficial partial-thicknessEpidermis + upper dermisMoist, pink/red, blisters; blanchesVery painful; heals in ~2–3 weeks, usually no graft
    Deep partial-thicknessEpidermis + deeper dermisWet/waxy, red-and-white, sluggish or no blanchVariable pain; slow; may need grafting
    Full-thickness (3rd degree)Entire dermis ± belowLeathery, white/charred/brown, dry; no blanchPainless in the centre (nerves destroyed); needs grafting
    Estimating Extent — the Rule of Nines (Adult)

    For a rapid adult TBSA estimate, the body is divided into regions of roughly 9% (or multiples): head & neck 9%, each arm 9%, the front of the torso 18%, the back of the torso 18%, each leg 18%, and the perineum 1%. The patient’s own palm (with fingers, “palmar surface”) approximates ~1% and is handy for small or scattered burns. Children differ (proportionally larger heads) — use a paediatric chart. Estimate only partial- and full-thickness areas; superficial (red, non-blistered) burns are not counted in TBSA for fluid decisions.

    Interactive Clinical Partner
    Rule-of-Nines TBSA Estimator (Adult)
    Tap the regions with partial- or full-thickness burns to estimate total body surface area involved. This is a rapid teaching estimate for adults — it does not replace a formal burn chart, paediatric adjustment, fluid calculation, or a burn-centre referral decision.
    0%
    Select burned regions
    Awaiting input
    Tap the body regions affected by partial- or full-thickness burns.
    Adult Rule of Nines only. Use a paediatric chart for children. Estimate guides urgency and transfer thinking; fluid resuscitation and referral criteria follow your current local burn protocol.
    Initial Burn Care & When to Refer

    Stop the burning (cool running water for a sustained period, never ice), remove non-adherent hot clothing and jewellery, cover with a clean non-adherent layer, keep the patient warm, and manage pain. Escalate / consider burn-centre referral for: large TBSA; any full-thickness burn; burns to the face, hands, feet, genitals, or over joints; circumferential burns; electrical, chemical, or inhalation injury; and burns in the very young, very old, or medically frail. Airway first if there is any inhalation concern. Verify fluid formulas and referral thresholds against your current local protocol — this module does not specify volumes.

    Common Dermatoses & Rashes

    § 27

    Most rashes are not emergencies (those live in §08), but the bedside clinician is often the first to see them and the first asked “what is this?” A working vocabulary helps you describe a lesion accurately, recognise the common benign patterns, and — most importantly — know when something ordinary-looking deserves a closer look. The discipline is the same as the rest of this module: describe what you see objectively before you label it.

    Describe Before You Diagnose — Morphology Vocabulary

    Macule — flat, <1cm colour change. Patch — flat, >1cm. Papule — raised, <1cm. Plaque — raised, flat-topped, >1cm. Vesicle — small fluid blister. Bulla — large fluid blister. Pustule — pus-filled. Wheal — transient raised oedematous (hives). Nodule — deeper, solid. Note distribution, colour, whether it blanches, and whether mucosa is involved — a clear description travels better than a guessed diagnosis.

    A bedside atlas. Tap each card to turn the everyday presentation into the key recognition feature and the practical action. These are common, generally non-emergent patterns — but each card notes the line at which it stops being routine.

    A Blanch Test That Cannot Wait

    One rash rule overrides everything in this section: a non-blanching rash (petechiae/purpura that stays visible when pressed — the “glass test”) in an unwell, especially febrile, patient may signal meningococcal sepsis or another life-threat. That is not a dermatosis — it is an emergency. Escalate immediately. When in doubt about any rash, describe it precisely and ask for review rather than guessing.

    Skin Cancer & the ABCDE Rule

    § 28

    Clinicians who undress patients for wound and skin care are in the single best position in the health system to catch a skin cancer early — often on skin the patient cannot see (the back, the scalp, the soles). You are not expected to diagnose; you are expected to notice and refer. The most dangerous common skin cancer, melanoma, is highly curable when caught early and lethal when missed. A few seconds of attention during routine care saves lives.

    The Three You Should Recognise

    Basal cell carcinoma (BCC) — the most common; a pearly, translucent papule with fine surface vessels, often on sun-exposed skin; may ulcerate (“rodent ulcer”) and rarely spreads but grows locally. Squamous cell carcinoma (SCC) — a scaly, crusted, or ulcerated firm lesion on sun-damaged skin; can metastasise. Melanoma — the deadliest; arises in a new or changing pigmented lesion. Any non-healing “wound” that will not close, especially on sun-exposed skin, may be a skin cancer — a Marjolin ulcer can also arise in a chronic wound or scar. Refer rather than re-dress.

    The ABCDE rule for pigmented lesions. A practical screen for which moles deserve a closer professional look. Tick the features you observe on a pigmented lesion — the tool tallies the warning signs and frames the next step. It does not diagnose; concerning lesions need a clinician’s assessment.

    0
    Select observed features
    Tick the ABCDE features present on the pigmented lesion.
    The “E” Is the Most Important Letter

    Evolution — any change over time — is the strongest single warning sign, even when A–D look reassuring. A lesion that is new, growing, changing colour or shape, itching, bleeding, or simply “different from the others” (the ugly-duckling sign) warrants referral. Also escalate any pigmented lesion that bleeds or ulcerates without trauma. When in doubt, photograph (with consent) and refer — never shave, freeze, or “treat” a suspicious pigmented lesion yourself.

    Nutrition for Wound Healing

    § 29

    Of the four pillars (§03), nutrition is the one most often acknowledged and least often acted on. A wound is a construction site, and construction needs materials: a malnourished body literally cannot manufacture the collagen, immune cells, and new tissue that close a wound. Screening and correcting nutrition is not an adjunct to wound care — it is wound care, and it belongs in the plan from day one (see Module 03 — Clinical Nutrition).[6]

    Building blockRole in healingPractical note
    ProteinThe raw material for collagen, granulation, and immune cells; demand rises with a woundThe most important macronutrient for healing; deficiency stalls wounds. Involve a dietitian for targets.
    Energy (calories)Fuels the whole repair process; without it, the body burns protein for energy instead of building tissueAdequate non-protein calories “spare” protein for healing.
    Fluid / hydrationMaintains perfusion to the wound bed and skin turgorOften the simplest deficit to miss and to fix; dehydration impairs delivery.
    Vitamin CEssential cofactor for collagen cross-linking and capillary integrityDeficiency impairs collagen; correct a documented deficiency — do not megadose blindly.
    ZincCofactor in protein synthesis, cell proliferation, and immune functionSupplement a documented deficiency only; excess impairs healing and copper status.
    Vitamin A, iron, copperSupport epithelialisation, oxygen delivery, and collagenAddress as part of overall status; iron supports the perfusion/oxygen pillar.
    No Blind Megadosing

    This module specifies no doses. Routinely flooding patients with high-dose vitamin C or zinc “to heal a wound” is not evidence-based, can cause harm (zinc excess impairs copper and immune function), and substitutes a supplement for the real work of feeding the patient. Correct documented deficiencies, optimise overall protein and energy, and let a dietitian set targets. Verify any supplementation against your current local protocol and the dietitian’s plan.

    Food First — the WestNet Reflex

    Reach for real food and fluid before reaching for the supplement shelf. Screen every at-risk and wounded patient for malnutrition (a validated tool, per facility policy), make eating possible and dignified (positioning, assistance, dentures, preferences, time), fortify meals, and bring in a dietitian early. The body that is fed heals the wound; the most expensive dressing on a starving patient still fails. Make the human whole, and the skin follows.

    Offloading, Positioning & Support Surfaces

    § 30

    Pressure is the cause; offloading is the cure. No dressing, nutrient, or antimicrobial can heal tissue that is being crushed against bone hour after hour. This section turns the “Keep moving” and “Surface” elements of SSKIN (§07) into concrete bedside practice — the mechanical work that prevents most pressure injuries and is non-negotiable for healing the ones that occur.

    Why Pressure Kills Tissue

    Capillaries are crushed when external pressure exceeds the pressure inside them, cutting off oxygen and nutrients to the tissue between skin and bone. Shear (skin dragged one way while deeper tissue stays) and friction compound the damage. The danger is a product of pressure × time: high pressure for a short time, or modest pressure for a long time, both kill tissue. Relieving the load — even briefly, even often — is what lets blood back in.

    1

    Reposition on a Schedule

    Turn and reposition at-risk patients on an individualised schedule, and encourage small frequent weight shifts in chairs. The schedule is documented and delivered, not just charted — a turn written but not done heals nothing.

    2

    Float the Heels

    The heel has almost no padding over bone. Float it off the surface entirely with a pillow under the calf (not under the heel), or a heel-offloading device. Heels are second only to the sacrum for pressure injuries.

    3

    The 30° Tilt

    A 30-degree side-lying tilt (and limiting head-of-bed elevation, which drives sacral shear) keeps weight off the bony trochanter and sacrum better than lying directly on the hip. Position with pillows to hold the angle.

    4

    Match the Surface to Risk

    Choose the support surface for the patient’s risk — from a pressure-redistributing foam mattress to powered alternating-pressure or low-air-loss systems for high risk. The bed and cushion are clinical equipment; reassess as risk changes.

    A Surface Is Not a Substitute for Turning

    The most advanced mattress does not replace repositioning — it buys margin, it does not abolish the need to move the patient. Equally, seated patients are at high risk: time in a chair concentrates pressure on the ischium and needs its own offloading and weight-shift plan. Reassess offloading whenever the patient’s mobility, weight, or medical stability changes. Verify repositioning frequency and surface selection against your current local protocol.

    Scenario Quiz — Apply the Module

    § 31

    Eight applied, single-best-answer scenarios that draw the deep-dive sections together. Pick an answer to see whether it is correct and why — the reasoning matters more than the score. This is formative self-check practice; it is separate from the graded Competency Assessment in §33.

    Use It to Learn, Not Just to Score

    If an answer surprises you, return to the section it draws from and re-read the reasoning. Every scenario here reflects a real decision point from this module — perfusion before compression, offloading before dressings, cause before cover. Verify all clinical decisions against your current local protocols.

    References & Evidence Base

    § 32

    The clinical guidance in this module is drawn from peer-reviewed literature indexed by the U.S. National Library of Medicine (PubMed / PMC) and from current clinical-practice guidelines published by major wound-care and infectious-disease bodies. Each citation below links to its source — journal articles to a PubMed title search, guideline bodies to their official publication.

    1. European Pressure Ulcer Advisory Panel (EPUAP), National Pressure Injury Advisory Panel (NPIAP), Pan Pacific Pressure Injury Alliance (PPPIA). Prevention and Treatment of Pressure Ulcers/Injuries: Clinical Practice Guideline. 3rd ed. 2019.International Guideline • internationalguideline.com
    2. Edsberg LE, Black JM, Goldberg M, et al. Revised National Pressure Ulcer Advisory Panel Pressure Injury Staging System. Journal of Wound, Ostomy and Continence Nursing. 2016.Peer-reviewed • PubMed (NLM)
    3. Wong CH, Khin LW, Heng KS, et al. The LRINEC (Laboratory Risk Indicator for Necrotizing Fasciitis) score: a tool for distinguishing necrotizing fasciitis from other soft tissue infections. Critical Care Medicine. 2004.Peer-reviewed • PubMed (NLM)
    4. Stevens DL, Bisno AL, Chambers HF, et al. Practice Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections (IDSA). Clinical Infectious Diseases. 2014.IDSA Guideline • PubMed (NLM)
    5. U.S. National Library of Medicine. MedlinePlus / StatPearls (NCBI Bookshelf) — Pressure Injury; Cellulitis. National Center for Biotechnology Information.NCBI Bookshelf • nlm.nih.gov
    6. Munoz N, Posthauer ME, Cereda E, et al. The Role of Nutrition for Pressure Injury Prevention and Healing: The 2019 International Clinical Practice Guideline Recommendations. Advances in Skin & Wound Care. 2020.Peer-reviewed • PubMed (NLM)
    7. Gould L, Abadir P, Brem H, et al. Chronic Wound Repair and Healing in Older Adults: Current Status and Future Research (NIH/NIA Wound Healing Workshop). Journal of the American Geriatrics Society / Wound Repair and Regeneration. 2015.NIH-convened • PubMed (NLM)

    Competency Assessment

    § 33

    Ten questions. Pass threshold: 7/10 for CE credit (upon accreditation approval).

    Q1
    Why does WestNet describe skin breakdown as a “downstream signal” rather than a local skin problem?
    Q2
    Name the six NPIAP pressure injury categories and the single feature that distinguishes Stage 4 from Stage 3.
    Q3
    A wound base is fully obscured by yellow slough. What stage is it, and why can you not assign a number?
    Q4
    What do the four letters of TIME stand for, and what action does each prompt?
    Q5
    List the four drivers of wound healing. Which is most often missed in a stalled wound?
    Q6
    Name three features that should make you suspect necrotizing fasciitis over simple cellulitis.
    Q7
    What does the SSKIN bundle stand for, and why is device-related skin checked under each device?
    Q8
    A patient develops painful skin and a positive Nikolsky sign after a new medication. What do you suspect and do?
    Q9
    Why is a stable, dry eschar on an ischaemic heel sometimes left intact rather than debrided?
    Q10
    What is the difference between a covered wound and a healing wound, and how do you tell them apart?

    Accreditation & Faculty

    § 34
    AccreditorStatus
    ANCC (American Nurses Credentialing Center)Application pending
    ACCME (Accreditation Council for Continuing Medical Education)Application pending
    CARNA (College of Registered Nurses of Alberta)Application pending
    CPSA (College of Physicians & Surgeons of Alberta)Planned

    Course Director: WestNet Medical Clinical Education Division
    Publication: WestNet Medical Publications • WestNet Catalog 731985456604 • ISBN 978-0-XXXXX-XXX-X (Pending)
    Platform: WestNet Unified Health Platform / HealthOS v3.6

    Glossary

    Ref
    Blanchable erythemaRedness that whitens under light pressure and returns — intact microcirculation. Non-blanchable erythema (stays red) signals a Stage 1 pressure injury.
    DebridementRemoval of non-viable (slough/necrotic) tissue to prepare the wound bed. Avoided on stable dry eschar over an unperfused limb.
    Deep Tissue Injury (DTI)Persistent deep red, maroon, or purple discolouration of intact or non-intact skin from pressure/shear damage to underlying tissue; can deteriorate rapidly.
    EscharBlack/brown necrotic tissue covering a wound. When it obscures the base, the wound is Unstageable.
    HealthOSWestNet’s unified clinical platform for ER, inpatient, pharmacy, labs, wound care, and dermatology across Canada and the USA.
    IatrogenicHarm caused by medical care itself — including device-related pressure injuries and drug-induced SJS/TEN.
    LRINECLaboratory Risk Indicator for Necrotizing Fasciitis — a lab-based score (CRP, WBC, sodium, etc.) that raises suspicion. Supportive only; a normal score never excludes the diagnosis.
    MacerationSoftening and breakdown of skin from prolonged moisture; whitened, waterlogged peri-wound skin signals excess exudate or incontinence.
    Nikolsky signEpidermis shears off with light lateral pressure — a red flag for SJS/TEN and other blistering emergencies.
    NPIAPNational Pressure Injury Advisory Panel — the body whose staging definitions are used throughout this module.
    PerfusionDelivery of oxygenated blood to tissue. Inadequate perfusion (PAD, hypotension, anaemia) is a leading cause of non-healing wounds.
    SSKINSurface, Skin inspection, Keep moving, Incontinence/moisture, Nutrition — the pressure-injury prevention bundle in §07.
    TIMETissue, Infection/inflammation, Moisture balance, Edge — the structured wound-bed assessment framework in §06.
    UnstageableFull-thickness pressure injury whose base is obscured by slough or eschar; depth (and therefore stage) cannot be determined until cleared.
    Related WestNet Medical Modules

    This module is part of a 12-title series. See also: Module 03 — Clinical Nutrition, Module 07 — De-escalation & Trauma-Informed Care, and Module 10 — Diabetes & Endocrine.