What is NPWT?

    What is NPWT?

    NPWT systems are generally indicated for the management of wounds, burns, ulcers, flaps and grafts. They apply negative pressure to the wound in order to remove fluids, including wound exudates, irrigation fluids, and infectious materials. They are contraindicated in the presence of exposed anastomotic sites, exposed vasculature, exposed nerves, exposed organs, necrotic tissue with eschar present, untreated osteomyelitis, non-enteric and unexplored fistulas, and malignancy in the wound.

    Mechanism of NPWT

    NPWT systems consist of the following components: an apparatus that generates vacuum and is capable of creating a negative pressure environment within a sealed wound; dressing materials used to pack the wound and seal it; a conduit for fluid removal from the wound bed; and a container/canister to collect waste materials that are removed from the wound bed via suction.
    There are five mechanisms by which the application of negative pressure to a wound may aid in the healing process:
    wound retraction,
    stimulation of granulation tissue formation,
    continuous wound cleansing after adequate primary surgical debridement,
    continuous removal of exudate, and
    reduction of interstitial edema.

    Indications and Contraindications

    Indications for Use,NPWT can be applied to various types of wounds:
     Diabetic ulcers
     Pressure ulcers
     Vascular ulcers (includes venous ulcers and arterial ulcers)
     Burn wounds
     Surgical wounds
     Trauma–induced wounds
     Exposed vasculature, nerves, anastomotic site, or organs.
     Necrotic tissue with eschar present.
     Untreated osteomyelitis.
     Non–enteric and unexplored fistulas.
     Malignancy in the wound bed.

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