Wound Therapies - Class 3 Flashcards
other adjunctive therapies
negative pressure wound therapy
non-contact normothermic wound therapy
electrical stim
therapeutic ultrasound
ultraviolet C
hyperbaric oxygen therapy
low level laser therapy
negative pressure wound therapy (NPWT)
applies sub atmospheric pressure or suction tot he wound bed
via a computerized therapy unit attached to an open cell foam sponge that is placed in the wound
secured with an adhesive drape
non contact normothermic wound therapy
consist of a non contact wound cover with a 38(degree C) warming card controlled by a temp unit
non contact normothermic therapy maintains
a warm humid wound environment
non contact normothermic therapy affects healing by increasing
tissue perfusion from microvasculature
PO2 of subcutaneous tissue
bacterial killing by neutrophils
non contact normothermic therapy affects healing by decreasing
affinity of O2 to Hb
tissue vulnerability to infection
E stim
transepithelial potential
Na+ current injury
galvanotaxis
transepithelial potential
diffusion of Na+ ions and through epithelial cell membranes
intact skin w/ (-) charge
Na+ current injury –> after wounding
Na+ escapes and current flows into the wound
wound w/ a (+) charge as compared to skin
Na+ current injury –> no current when
wound allowed to dry out and scab
ultrasound
non thermal effects
through acoustic streaming affect cellular membrane permeability
ultrasound –> inflammatory phase
mast cell degranulation and histamine release
chemotactic stim
macrophage stim to release GFs that stimulate fibroblasts
ultrasound –> proliferative phase
stimulates fibroblasts
increases wound contraction
endothelial cell activity
mast cells release angiogenic factors
ultrasound –> remodeling phase
strengthens scar tissue
increases elasticity
UV C
vasodilation
stratum corneum thickening
increase vitamin D production
bactericidal effects by inhibiting DNA synthesis
pigmentation augmentation
vasodilation –> UV C
increase cellular activity
O2 delivery
stratum corneum thickening –> UV C
epidermal proliferation
increase vit D production –> UV C
vit D increases calcium and phosphorus absorption
hyperbaric O2 therapy (HBO)
delivered to arterial blood
having pt breathe in 100% O2 at elevated atmospheric pressures of 2.0-2.5 ATA
HBO –> what is increased
PO2
from more dissolved O2 in blood
HBO stimulates
healing
providing more O2 to macrophages, neutrophils and fibroblasts
LLLT
using photochemical processes
photons are absorbed in cytochromes w/in mitochondria and cell membrane
LLT causes
changes in membrane permeability
increased ATP levels
DNA production
LLLT physiological changes
Improved cell proliferation
Change in cell membrane permeability to calcium uptake
Pain relief as a result of increased endorphin release
Increased serotonin
Suppression of nociceptor action
