The nurse is alert to the indication of possible dehiscence of an abdominal surgical wound, which would be evidenced by:

Choice A rationale:

Tertiary intention, also known as delayed primary closure or secondary suture, is a type of wound healing where the wound is initially left open and closed after several days.

Choice B rationale:

The remodeling phase is not a type of wound healing, but a stage of wound healing where the wound fully closes and the new tissue slowly gains strength and flexibility.

Choice C rationale:

Primary intention is a type of wound healing where the wound edges are approximated (brought together) and the wound heals by the process of epithelialization.

Choice D rationale:

Secondary intention is a type of wound healing where the wound is left open and heals by granulation, contraction, and epithelialization.

The correct answer is Choice D.

Choice A rationale: Leaving nonbleeding wounds open to air increases the risk of infection and delayed healing. Wounds need a moist environment to promote cell migration and collagen synthesis, essential for the initial inflammatory phase of healing.

Choice B rationale: Corticosteroids suppress the immune response and inflammation, which can delay wound healing. They inhibit leukocyte migration and fibroblast proliferation, which are crucial during the initial stage of the healing process.

Choice C rationale: Mechanical debridement is typically used for chronic wounds with necrotic tissue. In the initial stage of wound healing, it is not necessary and could damage newly formed tissue, delaying the healing process.

Choice D rationale: Oxygen therapy at 2L/min via nasal cannula enhances tissue oxygenation, promoting cellular activities such as collagen synthesis, angiogenesis, and leukocyte function, which are critical during the initial inflammatory phase of wound healing.