Which statement best defines pressure ulcers?

Which statement best defines pressure ulcers?

• A. A skin abrasion caused by scraping.
• B. A rash from allergic reaction.
• C. A scratch on the surface from friction.
• D. Injuries to the skin and underlying tissue resulting from prolonged pressure on the skin.

Answer: (D)

Pressure ulcers are injuries to the skin and underlying tissue caused by prolonged pressure on the skin, usually over a bone area like heels or the sacrum. When someone cannot move or shift positions, constant pressure reduces blood flow to that spot, leading to tissue damage that can extend into deeper layers. This definition captures the lasting, tissue-threatening nature of these wounds, unlike superficial skin problems. The other descriptions describe more minor skin issues—an abrasion from scraping, an allergic rash, or a friction-based scratch—which do not reflect damage from sustained pressure over time.

Pressure ulcers are injuries to the skin and underlying tissue caused by prolonged pressure on the skin, usually over a bone area like heels or the sacrum. When someone cannot move or shift positions, constant pressure reduces blood flow to that spot, leading to tissue damage that can extend into deeper layers. This definition captures the lasting, tissue-threatening nature of these wounds, unlike superficial skin problems.

The other descriptions describe more minor skin issues—an abrasion from scraping, an allergic rash, or a friction-based scratch—which do not reflect damage from sustained pressure over time.