Negative pressure drainage, also known as vacuum-assisted closure (VAC), is a therapeutic technique used in the management of surgical wounds. This method involves the application of negative pressure to the wound through a specialized dressing connected to a vacuum pump. Here are some benefits of negative pressure drainage in surgical wounds: 1. Enhanced wound healing: Negative pressure drainage promotes wound healing by removing excess fluid, bacteria, and other debris from the wound bed. This helps create a clean and moist environment, which is conducive to the formation of healthy granulation tissue and facilitates the healing process. 2. Reduced risk of infection: By removing bacteria and other contaminants from the wound, negative pressure drainage reduces the risk of infection. The negative pressure also helps promote blood flow to the wound, which aids in the delivery of oxygen and essential nutrients to the tissues, further reducing the risk of infection. 3. Decreased edema: Negative pressure drainage helps in the removal of excess fluid from the wound and surrounding tissues, reducing edema or swelling. This can help improve tissue perfusion and prevent complications such as impaired wound healing or tissue necrosis.