Adjunctive Wound Healing Flashcards
How is skin polarized? Is the exterior of skin more positive or negative?
Sodium flowing from exterior into the epithelium makes the exterior of the skin more negatively charged
following a skin lesion:
a) positively charged ions flow toward the wound
b) negatively charged ions flow toward the wound
a, positively charged ions flow towards wound
the process of attracting charged cells towards an electrical field is _______
galvanotaxis
which cells migrate to a negative charge?
neutrophils if tissue is inflamed
fibroblasts
which cells migrate to a positive charge?
neutrophil
macrophage
epidermal cells
what are some proposed effects?
- reduction/prevention of edema
- antibacterial
- stimulation of collagen, ATP, wound strength, capillary density, and collagen organization
when should electrotherapy be used?
crappy healing, chronic wounds
what are the two types of currents used for wound healing?
high voltage pulsed current (HVPC)
low intensity direct current (LIDC)
when would you want to use a cathode?
how about an anode?
cathode - for granulation, epithelialization, or if the wound is infected
anode - for debridement, to push silver in for cleaning
alternate them when wound contraction is desired
what two things need to be removed from the area before treatment?
petroleum products
metal residue
what is one special contraindication for this treatment?
osteomyelitis
when should the frequency be set to 100-120V instead of 30Hz or 60 Hz?
proliferative phase
what does low frequency ultrasound use instead of having contact with the wound? Is there evidence for this?
mist - evidence is limited but promising
what can ultraviolet light do?
- stimulate granulation and epithelial growth
- increase epithelial cell turnover and remove slough
- destroy bacteria
which kind of UV light is used in wound healing? How is the evidence?
UVC - not great evidence but not horrible for light infections but not for deep ones
