Which statement about nonblanchable erythema is true?

• A. It occurs due to tissue hypoxia.
• B. It is an early indication of pressure.
• C. It indicates potential damage to blood vessels.
• D. It turns white under the application of pressure.

Answer: (C)

Nonblanchable erythema is redness that persists when you press on the area, meaning the tiny blood vessels in the skin aren’t refilling normally. That ongoing redness points to damage to the microvasculature from sustained pressure. In this context, the sign tells you there may be injury to the underlying blood vessels, which is why that statement is the best fit. While reduced blood flow and early pressure injury are related ideas, the core takeaway of nonblanchable redness is its indication of vascular involvement rather than a general notion of hypoxia or blanching behavior.