What is the primary purpose of negative pressure wound therapy?

The primary purpose of negative pressure wound therapy (NPWT) is to promote healing by applying suction. This therapeutic technique involves placing a specially designed dressing over the wound that is connected to a vacuum pump. The suction helps to remove excess fluid and interstitial edema, which can create a moist environment that fosters tissue regeneration.

Additionally, the negative pressure stimulates the surrounding tissues, promoting angiogenesis (the formation of new blood vessels) and granulation tissue formation, which are critical components in the wound healing process. By reducing the burden of excess fluid and debris, NPWT enhances oxygen perfusion to the wound area, allowing for more effective healing.

While decreasing infection risk, hydrating the wound, and reducing pain are considerations in wound management, they are secondary benefits of NPWT rather than its primary purpose. The most significant action facilitated by the therapy is the application of controlled suction to support and accelerate the healing process.