Which stage of pressure injury involves full-thickness skin loss where adipose tissue is visible, but bone, tendon, or muscle are not exposed?

1. A

   Stage 1

2. B

   Stage 2

3. C

   Stage 3

4. D

   Stage 4

Appeared in: BTSC 3 August 2025

Explanation

• A Stage 3 pressure injury involves full-thickness loss of skin, meaning the damage extends through the epidermis and dermis into the subcutaneous tissue.
• The key identifier for Stage 3 is the visibility of adipose (fat) tissue in the ulcer bed.
• Crucially, in Stage 3, the injury has not yet reached the deeper layers, so fascia, muscle, tendons, ligaments, or bone are not exposed.
• Slough (dead tissue) or eschar (scab) may be present, and undermining or tunneling can occur.

Why Other Options Were Wrong

• Option A: Stage 1 involves intact skin with non-blanchable redness. There is no skin loss, so it does not match the description of full-thickness loss.
• Option B: Stage 2 is characterized by partial-thickness skin loss involving the epidermis and/or dermis. Adipose tissue is not visible. It presents as a shallow ulcer or blister.
• Option D: Stage 4 involves full-thickness skin and tissue loss where bone, tendon, or muscle are exposed and directly palpable. This is a more severe stage than described in the question.

Related Visual

Clinical Relevance

• Nursing practice connection: Knowing Staging of pressure injuries (decubitus ulcers) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
• Accurate staging of a pressure injury is critical for planning appropriate wound care, selecting the correct dressings, and implementing preventive measures.
• Staging is a key component of nursing documentation and is used for quality monitoring and legal purposes. Incorrect staging can lead to improper treatment and poor patient outcomes.
• What if? If the wound bed described in the question was covered by slough or eschar, making the adipose tissue not visible? The injury would be classified as 'Unstageable' until the wound bed could be debrided and visualized.

How to Approach the Question

• First, read the question carefully to identify the key characteristics of the pressure injury described. The keywords are 'full-thickness skin loss,' 'adipose tissue is visible,' and 'bone, tendon, or muscle are not exposed.'
• Next, recall the definitions for each of the four stages of pressure injuries.
• Compare the description in the question to the definition of each stage.
• Stage 1: Intact skin, redness. Incorrect.
• Stage 2: Partial-thickness loss, no fat visible. Incorrect.
• Stage 3: Full-thickness loss, fat visible, no bone/muscle exposed. This matches the description perfectly.

Concept Tested & Keywords

• Concept Tested: Staging of pressure injuries (decubitus ulcers)
• Stem keywords: pressure injury, full-thickness skin loss, adipose tissue visible, bone, tendon, or muscle not exposed
• Lead-in keywords: Which stage
• Negative lead-in flag: false

Question ID

QSKfGABynLvg7Av9Wb6Nv0

Copy ID

Reference Book

E6 Nursing Fundamentals Taylor p. 560-562

E6 Nursing Fundamentals Potter Perry 12e Part 6 pp. 70-72, 69-71