A client with diabetes mellitus has a diabetic foot ulcer on the left heel. The nurse is preparing to apply a hydrocolloid dressing to the wound. What is an advantage of using this type of dressing?

Correct answer: D) It stimulates autolytic debridement of necrotic tissue in the wound.

Rationale: Hydrocolloid dressings are occlusive or semi-occlusive dressings that adhere to the skin and form a gel-like substance over the wound. This creates a moist environment that stimulates autolytic debridement, which is the natural breakdown of necrotic tissue by enzymes in the wound fluid.

Incorrect options:

A) It provides a moist environment for wound healing. - This is true, but not specific to hydrocolloid dressings, as other types of dressings, such as hydrogels and alginates, also provide a moist environment for wound healing.

B) It absorbs large amounts of exudate from the wound. - This is false, as hydrocolloid dressings are not suitable for wounds with heavy exudate, as they can become saturated and leak. Alginates or foams are more appropriate for wounds with large amounts of drainage.

C) It allows frequent inspection of the wound without removal. - This is false, as hydrocolloid dressings are opaque and do not allow visualization of the wound. They should be left in place for several days, unless there are signs of infection or leakage.

Correct answer: C) Foul-smelling greenish discharge from the wound

Rationale: Foul-smelling greenish discharge from the wound indicates a possible infection, which can delay wound healing and increase the risk of sepsis. The nurse should notify the provider and obtain a wound culture to identify the causative organism and guide antibiotic therapy.

Incorrect options:

A) Serous drainage from the wound - This is a normal finding, as serous drainage is clear and watery and indicates a healthy inflammatory response.

B) Redness and warmth around the wound - This is a normal finding, as redness and warmth indicate increased blood flow to the wound site, which facilitates healing.

D) Granulation tissue forming in the wound bed - This is a positive finding, as granulation tissue is new connective tissue that fills the wound and supports epithelialization.