A 70-year-old male patient was fitted with a negative-pressure wound therapy system (NPWT),also called vacuum-assisted closure,after his most recent surgical wound debridement.This device works by:

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Also known as vacuum-assisted closure (VAC),NPWT is used for difficult to manage wounds that do not respond to traditional wound care methods.NPWT works by using a device to apply constant controlled negative pressure to a wound that is filled with a drainage sponge (polyurethane foam)and sealed with an occlusive dressing.The VAC system has three main mechanisms of action that promote wound healing.First,the negative pressure results in mechanical tension on the tissues,causing a reduction in edema and fluid removal.The second action is macro-deformation and wound contraction.The third action is micro-deformation and mechanical stretch perfusion.VAC therapy may be used for acute and traumatic wounds,subacute wounds,pressure ulcers,chronic open wounds,meshed skin grafts,and skin flaps.

A 70-Year-Old Male Patient Was Fitted with a Negative-Pressure Wound