Negative Pressure Wound Therapy (NPWT) is a therapeutic non-invasive technique by using vacuum source to promote acute or chronic wound healing and fight infection.
NPWT consist of a wound dressing (gauze or foam), a drainage tube, an occlusive transparent film dressing, and is connected to a vacuum source that supplies negative (subatmospheric) pressure. It's used for the clinical treatment of many wound types, including orthopaedic trauma, soft tissue trauma, skin grafts, pressure ulcers, venous leg ulcers, diabetic foot ulcers, burns, surgical infections, and management of other major surgical wounds.
NPWT uses a closed drainage system to apply controlled suction (vacuum) to a wound bed. The wound is first filled with a wound filler (gauze or foam) to allow pressure to be distributed evenly to the wound bed. The wound is then sealed with an adhesive plastic film and the drain is connected to a vacuum pump. Wound fluid is sucked out through the drain and collected in a canister.
The data show that NPWT provides excellent clinical benefits and significantly reduces the cost of wound care. NPWT creates a moist environment, drains exudate, reduces tissue oedema, contracts the wound edges, mechanically stimulates the wound bed, alters blood flow in the wound edges and stimulates angiogenesis and the formation of granulation tissue. NPWT can offer protection against infection as the wound is sealed. In addition, the need for less frequent dressing changes may further reduce the risk of contamination.
The NPWT system is indicated for patients with orthopaedic trauma, soft tissue trauma, skin grafts, pressure ulcers, venous leg ulcers, diabetic footulcers, burns, surgical infections, and management of other major surgical wounds.
Exposed arteries, veins, organs or nerves
Necrotic tissue with eschar present
Malignancy in wound (with exception of palliative care to enhance quality of life)
Non-enteric and unexplored fistulas
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