What is the expected outcome of using negative pressure wound therapy?

The expected outcome of using negative pressure wound therapy (NPWT) is centered around its ability to promote wound healing, primarily through increased blood flow to the affected area. NPWT works by creating a controlled negative pressure environment at the wound site, which helps to draw out excess fluid and exudate while also facilitating a complex set of biological responses that enhance blood circulation. This increased blood flow is vital because it brings essential nutrients and oxygen to the wound tissue, which are crucial for the healing process. Moreover, NPWT can help to stimulate the formation of granulation tissue, further promoting closure of the wound.

While pain reduction may occur for some patients due to less movement of the surrounding tissue and a reduction in edema, it is not the primary mechanism of action for NPWT. Similarly, while NPWT can contribute to better outcomes regarding scarring, it may not always result in completely closed wounds without any scarring, as this can depend on various factors, including the wound's nature and patient characteristics. Thus, the focus on promoting healing through enhanced blood flow accurately captures the primary expected outcome of using negative pressure wound therapy.