What is negative pressure wound care?

• A. The wound is filled with a sponge and a vacuum is applied via a closed system to remove stagnant fluid and decompress interstitial space
• B. A system that uses heat to promote healing
• C. A system that delivers antibiotics through a catheter
• D. A system that covers the wound with a dry dressing

Answer: (A)

Negative pressure wound therapy works by creating a sealed environment around the wound and applying controlled suction through a dressing. A compatible sponge or foam dressing fills the wound space, and a vacuum pump draws out drainage. This negative pressure removes stagnant fluid, reduces interstitial edema, and lowers tissue pressure, which helps increase blood flow, promotes granulation tissue formation, and draws wound edges together to accelerate healing. It’s commonly used for larger, deeper, or contaminated wounds where managing exudate and edema is crucial.

The described approach matches this concept: the wound is filled with a sponge and a vacuum is applied via a closed system to remove stagnant fluid and decompress interstitial space. The other options describe heat therapy, antibiotic delivery, or a simple dry dressing, none of which constitute negative pressure wound care.