VAC Dressing (Negative Pressure Wound Therapy NPWT) An advanced wound care technique that uses controlled negative pressure (50 to 125 mmHg) to remove exudate, reduce infection, and promote healthy granulation tissue. The Use of Negative Pressure Wound Therapy in Nursing Homes Vacuum assisted closure for wound care Parkview Health extriCARE 2400 Negative Pressure Wound Vac Dressings Vitality Medical 3M V.A.C. Peel and Place Dressing Kit