Negative Pressure Wound Therapy With
Complete Solutions 2024
What is negative pressure wound therapy? ANS✔✔ use of vacuum dressing to
promote healing
brand: VAC (vacuum assisted closure)
What is the overall purpose of NPWT? ANS✔✔ enhance healing, promote closure
What are the effects of NPWT? ANS✔✔ -remove chronic edema
-increase localized blood flow, capillary filling
-may remove infectious material fluid; research still pending whether bacteria truly
removed from wound bed
-enhance formation of granulation tissue
-help approximate wound edges and facilitate contraction/closure
True / False: NPWT is superior to standard wound care. ANS✔✔ false: currently there
is "insufficient evidence" that it is superior to standard care
What is the theory behind NPWT? ANS✔✔ increased tension among adjacent cells
stimulates cell growth/division, helping with contraction and closure
semi occlusive dressing = moist wound
mechanical stress/force causes increased rate of cellular proliferation/angiogenesis
, removal of interstitial fluid restores blood flow
Contraindications for NPWT ANS✔✔ necrotic tissue
dry wound
untreated osteomyelitis
malignancy in wound
unexplored fistulas/organs / body cavities
malnourished (albumin <3mg/dL)
gross infections/sepsis
wound infection? (debatable; use proper foam)
What is a precaution to NPWT? ANS✔✔ active bleeding/anticoagulant
Does research support the use of NPWT? (give specific outcome examples) ANS✔✔ -
in blinded prospective randomized trial of wet to moist dressings vs VAC: after 6
wks wound volume and depth decreased more with VAC than with wet to moist
dressing, improved granulation tissue bed
-myers reports average volume reduction by 20%
Describe the application of of a wound VAC ANS✔✔ -must debride wound first so
free of eschar, slough, nonviable tissue
-cut foam to size and place within wound bed; all foam must touch each other if
using multiple pieces
-protect periwound: use of hydrocolloid or skin sealant; prevent maceration, use
transparent films and nonadhesive gauze
-cover film with drape to create air tight seal
-dressing changes every 2-3 days, if infected more frequently (every 12 hrs)
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