Pressure Injury Staging, Healing, and Clinical Scenarios

A complete set of 50 vocabulary flashcards covering pressure injury stages (Stage 1 to Stage 4), deep tissue pressure injuries (DTPI), unstageable wounds, healing mechanisms, mechanical forces, and tissue identification.

Stage 1 Pressure Injury

Intact skin with localized nonblanchable redness or persistent color change.

Skin Integrity in Stage 1

The state of the skin barrier in a Stage 1 pressure injury, which remains completely intact.

Nonblanchable Redness

Skin redness that does not turn pale when external pressure is applied.

Stage 1 Associated Findings

Localized physical findings accompanying Stage 1 injuries, which may include pain, warmth or coolness, and firmness or softness.

Stage 1 Dark Skin Assessment

Clinical detection considerations in darker skin tones, where visible redness and blanching response may be less apparent.

Stage 2 Pressure Injury

Partial-thickness skin loss presenting with a shallow red or pink wound bed.

Stage 2 Blister Presentation

A characteristic Stage 2 manifestation presenting as an intact or ruptured serum-filled blister.

Slough in Stage 2

Nonviable tissue that must not be present in a Stage 2 pressure injury.

Exposed Fat in Stage 2

Subcutaneous adipose tissue that is not exposed or involved in Stage 2 partial-thickness injuries.

Skin Tear Staging Exclusion

A traumatic wound type that cannot be staged as Stage 2 because staging systems apply exclusively to pressure injuries.

Incontinence-Associated Dermatitis

Moisture-associated skin damage caused by incontinence that cannot be staged as a Stage 2 pressure injury.

Bruising in Skin Damage

A clinical discoloration suggesting a possible deep tissue pressure injury rather than a Stage 2 injury.

Scenario: Intact Sacral Redness That Does Not Blanch

A clinical presentation classified as a Stage 1 pressure injury.

Scenario: Shallow Pink Wound with Clear Blister

A clinical presentation classified as a Stage 2 pressure injury.

Stage 3 Pressure Injury

Full-thickness tissue loss with visible fat, but without exposed muscle, tendon, or bone.

Undermining in Stage 3

Tissue destruction occurring underneath intact skin edges along the wound margins that can occur in Stage 3 pressure injuries.

Slough in Stage 3

Devitalized tissue that may be present in Stage 3, provided it does not conceal the wound base or obscure its true depth.

Anatomical Depth Variation in Stage 3

Anatomic locations like the ear or ankle with little subcutaneous fat where Stage 3 injuries can appear shallow.

Stage 4 Pressure Injury

Full-thickness skin and tissue loss with exposed or palpable deeper structures.

Exposed Structures in Stage 4

Deep anatomical components visible or palpable in Stage 4 wounds, including muscle, tendon, bone, or other supporting structures.

Osteomyelitis

A serious bacterial bone infection that Stage 4 pressure injuries can directly predispose a patient to developing.

Tunneling in Stage 4

Narrow pathways or channels extending from the wound margin into deeper tissues that can be present in Stage 4 injuries.

Deep Tissue Pressure Injury (DTPI)

Persistent purple or maroon deep discoloration or a blood-filled blister resulting from underlying soft tissue damage.

DTPI Associated Findings

Localized clinical manifestations that can appear alongside DTPI, including pain, bogginess, firmness, and temperature changes.

DTPI Progression

The clinical course of a deep tissue pressure injury, which can rapidly worsen and expose deeper damage despite appropriate care.

DTPI Dark Skin Assessment

Diagnostic approach for darker skin where purple or maroon discoloration is less obvious, requiring assessment of skin texture and temperature.

Scenario: Visible Fat Without Tendon or Bone

A clinical wound presentation classified as a Stage 3 pressure injury.

Scenario: Bone Visible at Wound Base

A clinical wound presentation classified as a Stage 4 pressure injury.

Scenario: Intact Maroon Heel Discoloration

A clinical condition classified as a deep tissue pressure injury (DTPI).

Scenario: Wound Extends to Joint Capsule

A clinical presentation classified as a Stage 4 pressure injury due to involvement of deeper supporting structures.

Unstageable Pressure Injury

A full-thickness pressure injury where slough or eschar conceals the wound base and prevents determination of true depth.

Unstageable versus Stage 4 Distinction

The clinical distinction establishing that an unstageable injury is not identical to Stage 4 because true tissue depth is unknown.

Numeric Staging Requirement for Covered Wounds

The prerequisite that nonviable tissue must be removed so the deepest damaged structures can be identified before assigning a numeric stage.

Stable Heel Eschar Rule

The clinical protocol directing clinicians not to remove stable, dry, intact, adherent eschar on the heel in the absence of infection signs.

Reverse Staging

The erroneous clinical practice of assigning lower numeric stages to a healing, deep pressure injury as it improves.

Documentation of Healing Stage 4

The required documentation standard stating a healing Stage 4 wound must be recorded as a healing Stage 4, rather than down-staged to Stage 3.

Tissue Replacement During Wound Healing

The biological repair sequence in pressure injuries where lost tissue is replaced by granulation and scar tissue, followed by epithelial coverage.

Stage 0 Classification

A nonexistent pressure injury category; a completely healed Stage 4 injury remains documented as a healed Stage 4.

Biological Basis Against Down-Staging

The rationale that lost specialized deep tissue structures are replaced by scar tissue rather than restored to their original anatomy.

Vascular Ulcer Staging Exclusion

The guideline stating arterial and venous ulcers must not be classified using the pressure injury staging system.

Scenario: Yellow Slough Completely Covers Wound Base

A clinical scenario resulting in the classification of the pressure injury as unstageable.

Eschar

Hard, black, dry nonviable tissue covering a wound, such as on a compromised heel.

Documentation: Shallowing Stage 4 Wound

The specific chart designation applied to a healing Stage 4 wound that has decreased in depth: healing Stage 4 pressure injury.

Maceration

Moisture-induced softening and breakdown of the skin following incontinence that increases vulnerability to tissue damage.

Shear Force

The primary mechanical force exerted on tissue when a patient slides downward in bed.

Friction Force

The primary mechanical force generated at the skin surface when a patient is dragged across bed sheets.

Hypergranulation

Excessive, protruding red vascular granulation tissue that delays epithelialization and wound closure.

Granulation Tissue

Healthy, red, bubbly vascular tissue that forms in the wound bed during the healing of a full-thickness injury.

Epithelium Tissue

Smooth, new pink cellular tissue advancing inward from the wound edges to provide surface resurfacing.

Diagnostic Scope of Staging

The clinical rule establishing that numeric staging is strictly reserved for pressure-induced injuries and excluded from other etiologies.