Negative pressure wound care Flashcards
stages of wound healing - 4
order and goals
- hemostasis - stop bleeding
- inflammation- manage it
- proliferation- reduce wound volume and prepare for closure
- remodeling- increase tissue tensile strength
NPWT what does it DO
applies - pressure to get
a- moist wound healing
b- collect wound fluid ( suction effect)
NPWT advantages
- prepares wound for closure
- reduce edema
- ** removes exudate and infectious materials
- promote granulation tissue formation and increases
Indications
- dehisced wounds
- surgical wounds
- partial thickness
- muscle flaps + skin grafts
- pressure ulcers
- venous leg ulcers
- diabetic ulcers
- traumatic wound
contraindications for NPWT - what to not use
FOAM dressings in direct contact with exposed blood vessels, organs, and nerves
4 contraindications
- malignancy
- untreated osteomyelitis
- non enteric and unexplored FISTULAS
- necrotic tissue with eschar
mechanisms of action- big picture macro and microstrain combined
1-4 micro
1. draws edges together
2. removes infectious material
3. reduces edema
4. promotes blood flow
foam with tissue under - pressure macro: tissue stretch –> end result: granulation tissue formation
Macrostrain definition/ whats happening
draws edges together
removes foreign matter, reduce edema , promote blood flow
STEPS 1-4
microstrain
tissue deformation= cell stretch
cell stretch leads to proliferation of granulation tissue
Intermitten therapy wound settings
Intermittent: on/ off suction , INTERVAL
variable therapy variable therapy
rise and fall of pressure
doesn’t drop to 0
pressure settings PT consideration
consults with MD before titrating the pressure setting
topical therapy doesn’t require x, what is required
NO antiseptics needed
normal saline is used
dressing changes in absence of infection
timeline ***
every 48-72 hours
no less than 3 times a week
adhered foam may cause
painful dressings
