What is the purpose of using a VAC (vacuum assisted closure) following a skin graft?

The use of a VAC (vacuum-assisted closure) following a skin graft primarily serves the purpose of applying pressure to the graft site and evacuating fluids. This technology helps to create a controlled environment that enhances wound healing. By applying negative pressure, the VAC system promotes the removal of excess exudate and fluids that can accumulate in the wound area, which is crucial for maintaining a clean and stable environment for the newly grafted skin.

This negative pressure mechanism also aids in the approximation of the graft to the underlying tissue, improving the likelihood of graft take, which is when the new skin successfully adheres to the wound bed. The negative pressure can stimulate angiogenesis—formation of new blood vessels—which is beneficial for the healing process, even though enhancing circulation to the graft itself is not the primary purpose of the VAC.

While minimizing scarring and reducing pain are important considerations in wound care and skin grafting, the use of a VAC is more directly focused on managing fluid dynamics and creating conditions conducive to healing at the graft site. The effectiveness of VAC therapy in these aspects is well supported by clinical practice and studies, emphasizing its role in optimally managing post-operative care following skin graft procedures.