Which statement does NOT describe a dirty wound?

• A. Clean wound with no contamination
• B. Foreign bodies
• C. Fecal contamination
• D. Greater than 4 hours old

Answer: (A)

Wound contamination level is what this question hinges on. A dirty wound is one with significant contamination or infection, such as the presence of foreign material, feces, devitalized tissue, or a wound that has had time for bacteria to proliferate. The statement describing a clean wound with no contamination does not fit that category and is the one that does not describe a dirty wound. The other options illustrate scenarios that fit dirty wound criteria: foreign bodies introduce extrinsic material and bacteria, fecal contamination brings heavy bacterial load, and a wound that has been open for several hours increases the chance of infection and classifies as dirty in practice.