Samuel Garcia was fitted with a negative-pressure wound therapy system,also called vacuum-assisted closure,after his most recent surgical wound debridement.This device works by (select all that apply):

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Negative-pressure wound therapy (NPWT),also known as vacuum-assisted closure (VAC),is used for difficult-to-manage wounds that do not respond to traditional wound care methods.Negative-pressure wound therapy works by using a device to apply constant controlled negative pressure to a wound that is filled with a drainage sponge and sealed with an occlusive dressing.The VAC system has three main mechanisms of action that promote wound healing.First,negative pressure results in mechanical tension on the tissues,causing the development of new blood vessels,mitosis,and dilation of the arterioles;at the same time,pressure produces a centripetal force that helps to pull the wound edges together.Second,VAC therapy promotes evacuation of excess wound fluid,such as the interstitial fluid that accumulates in a wound,and prevents the circulatory and lymph systems from delivering nutrients and oxygen.Third,negative pressure reduces bacterial colonization in the wound bed.

Samuel Garcia Was Fitted with a Negative-Pressure Wound Therapy System,also