Negative-pressure wound therapy

Negative-pressure wound therapy (pronounced: /ˈnɛgətɪv ˈprɛʃər wuːnd θɛrəpi/), also known as vacuum-assisted wound closure (VAC), refers to a therapeutic technique using a vacuum dressing to promote healing in acute or chronic wounds and enhance healing of second and third degree burns. The therapy involves the controlled application of sub-atmospheric pressure to the local wound environment, using a sealed wound dressing connected to a vacuum pump.

Etymology

The term "Negative-pressure wound therapy" is derived from the method of applying negative pressure, or a vacuum, to a wound to aid in its healing. The term "vacuum-assisted wound closure" is a more descriptive term for the same process.

Procedure

The Negative-pressure wound therapy procedure involves the application of a sterile foam dressing to the wound, which is then covered with an adhesive film to create a seal. A drainage tube is placed on top of the foam, and the tube is connected to a vacuum pump. The pump creates a negative pressure environment in the wound, which helps to increase blood flow to the area and draw out excess fluid from the wound.

Benefits

The benefits of Negative-pressure wound therapy include increased blood flow to the wound, removal of excess fluid, and promotion of granulation tissue formation. This can lead to faster wound healing, reduced risk of infection, and improved patient comfort.

Risks

Potential risks of Negative-pressure wound therapy include pain, bleeding, infection, and damage to nearby structures. However, these risks are generally low and can be minimized with proper technique and patient monitoring.

Related Terms

• Wound healing
• Chronic wound
• Acute wound
• Granulation tissue
• Vacuum

External links

• Medical encyclopedia article on Negative-pressure wound therapy
• Wikipedia's article - Negative-pressure wound therapy

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