Tissue Integrity NSG 100 Exam 3 Practice

Obtaining a wound culture is about confirming infection and guiding treatment when infection is actually present or likely to be worsening. You don’t culture every wound right after injury because early on many wounds are not infected, and a culture could be misleading or unnecessary. A culture is most useful when signs of infection persist or worsen—such as increasing redness, warmth, swelling, purulent drainage, foul odor, or systemic symptoms—or when a patient isn’t improving on initial, broad‑spectrum therapy. In those cases, sampling from the wound bed or purulent material (preferably deep tissue or a biopsy rather than a superficial swab) helps identify the causative organism and its antibiotic sensitivities so therapy can be targeted. If there are no infection signs and the wound is healing with standard care, a culture isn’t indicated.