wound products Flashcards
list 5 types of debridement
autolytic
surgical
conservative
mechanical
low frequency ultrasound
describe autolytic debridement
the use of rehydrating or moisture retention dressings to assist autolysis of non-viable tissue.
name the hydrosurgical device that is used in surgical debridement
versajet
describe concervative sharps debridement
the conservative removal of loose, non-viable tissue in a wound performed under aseptic conditions.
list the 2 types of mechanical debridement
wet to dry
wound irrigation
describe wet to dry mechanical debridement
dressings where an open mesh gauze is moistened with normal saline and allowed to dry. Debris adheres to dressing and is removed
describe wound irrigation
pressure from the irrigation solution to remove debris from the wound.
describe low frequency ultrasound debridment
utilises low frequency waveforms to cause cavitation. vibration of liquid back and forth with pressure creates rapid movement of fluid against wound bed that a vaccume is created
what is the main benefit to LFUD
can kick start a chronic wound back into healing mode through vasodilation and vasospasm increasing blood flow.
list 5 reasons for dressing wounds
optimal environment
protect the wound
maintain temperature
prevent bleeding
promote drainage
list 5 ideal criteria for wound products
optimal environment
allows GE
affordable
reduce amount of changes necessary
sterile
list 5 functions of a secondary product
to hold
to support
to protect
keep closed
camouflage
what is the function of hydrocolloid products
provides a most environemnt, reducing dead space.
function of cavity dressings
highly absorbent, retaining exudate within the product thus reducing amount of times DC required.
how do odour absorbing dressings work
incorporate activated charcoal that absorb odour, bacteria and exudate.
functions of interactive wet dressings
cleanses the wound
debrides and desloughs
absorbs exudate
minimal wound bed adherence
how do collagen dressings work
freeze dried collagen gel forming dressings which are designed to be a protease modulating matrix.
what is NPWT
vacuum assisted pressure below the wound surface to help promote healing. Topical negative pressure applies non compressive mechanical forces which allows arterioles to dilate and increase blood flow.
benefits of NPWT
moist wound environment
reduced bacterial colonisation
reduces localised oedema
promotes granulation and epithelialisation
facilitates collection of wound exudate.
when is NPWT contraindicated
when necrotic tissue is present
what type of solution is sterile normal saline
isotonic
what type of solution is sterile water
hypotonic
what type of solution is chlorhexidine gluconate
not isotonic
what type of solution is polyhexaethylene biguanide
sufactant antimicrobial
list 4 things that cause dry skin
weather
AC
sun exposure
aging
what is the peri-wound
area of skin within a 4cm radius of the wound edge
list 2 examples where semi permeable film dressings are used
blisters and cannula
how do semi permeable film dressings work
adhesive, thin transparent, semi permeable poluurethane films.
how do hydrocolloids dressings work
incorporate absorbent particles bound to a repellent polymer. moisture retentive and convert to gel at wound interface.
describe the type of wound hydrocolloids are mostly used for
low to mod exudate
shallow wounds
dressing can remain for many days.
describe polyurethane foam dressings
sheets or cavity fills
some have silicone som have a semi permeable waterproof layer
describe the type of wound that polurethane foam dressings can be used for
minimum to high exudate
shallow to moderate cavity wounds
abrasion, skin tears
describe non-adherent dry or film coated dressings
contain a perforated polyester film or non stick agent, attached or bonded to a cotton or acrylic absorbent pad.
describe the wound where island dressings are used
low exudating wounds
what 2 antiseptics are added to the tulle gras dressing
chlorhexidine and providone iodine
when are hydrogels ideal
dry wounds and necrotic sloughy wounds
function of using sterile normal saline
it is sterile and non-antiseptic
function of sterile water
it is sterile and non antiseptic
function of chlorhexidine
sterile, single use, inactivated if used with soaps
function of polyhexaethylene
lowers liquid surface tension, allowing greater spread and facilitating seperation of non viable tissue
function of octenidine dihydrochloride
lowers liquid surface tension allowing greater spread and facilitating seperation of non viable tissue
function of microdacyn
oxidising molecules similar to those produced by the body in response to infection
