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Chronic Wound Healing
Exam 1
109
Medical
Graduate
06/18/2012

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Cards

Term
Name 8 items that affect wound healing
Definition
Nutrition
Age
Smoking
Infection/colonization
Medications
Blood sugars
Stress
Temperature
Term
Name the 3 phases of wound healing
Definition
Inflammatory
Proliferative
Remodeling
Term
This stage of wound healing includes hemostasis, rush of platelets, macrophages, etc. WBCs. Drugs that decrease this stage interfere. A chronic wound may get stuck in this stage.
Definition
Inflammatory
Term
This stage of wound healing is where granulation tissue forms. Epidermal migration. Stuck here = hypergranulation/chronic wound. This is where the wound matrix is established.
Definition
Proliferative
Term
This is the stage of wound healing where there is collagen remodeling, the wound will never be more than 80% of the pre-injury strength
Definition
Remodeling phase
Term
The removal of non-viable tissue
Definition
Debridement
Term
Wet-to-dry dressings can only work on what type of wound
Definition
A moist wound
Term
Why is it important to debride eschar or slough/non-viable tissue?
Definition
Because it slows granulation and re-epithelialization and harbors microorganisms
Term
This type of debridement is where the pt's body does the work.
Definition
Autolytic debridement
Term
What is the most selective type of debridement
Definition
Autolytic
Term
This type of debridement is where you can use gauze to wipe; a wet-to-dry dressing.
Definition
Mechanical debridement
Term
Which type of debridement is the least selective
Definition
Mechanical
Term
This type of debridement uses forceps, scissors, and scalpel. You must have experience and an order to do this independently.
Definition
Sharp debridement
Term
This type of debridement uses maggots
Definition
Biological
Term
This type of debridement uses a chemical via ointments applied to dissolve eschar
Definition
Enzymatic
Term
In what situation would you need to clean a wound as opposed to leave it alone.
Definition
If it is necrotic or "dirty"
-Slough, eschar, odor, worrisome drainage
Term
If the wound appears to be clean then should you clean it anyway?
Definition
NO just monitor it
Term
What are some basic questions to ask when first deciding on a dressing
Definition
1. Are there any S&S of infection
-Do not use occlusive dressing on an infected wound
2. How much drainage is present
3. Debridement needed vs. maintain a healthy wound
Term
A super absorptive
Definition
Alginate
Term
The appropriate amount of moisture is essential in wound healing. If the wound is too wet go to absorptive dressings which include what 3 types
Definition
Alginate
Gauze
Foams
Term
This type of absorptive is cheap and good to use when you have to do multiple dressing changes
Definition
Gauze
Term
Should you put occlusive dressing over an infected wound?
Definition
NEVER
Term
What 2 types of dressings would be appropriate to add moisture to a dry wound
Definition
Occlusive
Semi-occlusive
Topicals
Term
What is the exception to not moisturize dry wounds
Definition
Stable heel ulcers
Dry gangrene
Term
What type of dressing is an occlusive?
Definition
Hydrocolloid
Term
Name 3 ways in which dressings can be classified
Definition
-Primary/Secondary
-Occlusive/Semi-occlusive/Non-occlusive
-By components (foam, film, gauze)
Term
A fancy word for Clorox bleach. Used on infected wounds
Definition
Dakin's solution
Term
This type of dressing is cheap, absorbant, non-occlusive, but will stick to granulation.
-4X4s, telfa, vaseline gauze/xeroform, kerlix wraps
-Use on dirty wounds, wounds with heavy exudate, use to pack tunnels, tracts, undermining, use on wounds that have to be changed daily
Definition
Gauze
Term
This type of dressing is cheap, self-adhesive, semi-occlusive, and aids autolytic debridement
-Opsite, tegaderm
-Use on wounds that are generally clean, have minimal drainage, and the dressing can be left in place for a few days.
Definition
Thin Films
Term
This will stick but not adhere to the wound. Has a petroleum jelly component in it.
Definition
Xeroform
Term
Used commonly over IV or PICC line sites. Super sticky, non-absorptive, will tear fragile skin
Definition
Thin Films
Term
This will not adhere or stick to the wound
Definition
Adaptic
Term
This type of dressing is semi-occlusive, can be self-adhesive, aids in autolytic debridement, gentle on skin and can absorb significant amounts of drainage. (will not pull of granulation tissue)
Definition
Foam
Term
Examples of this are polymem, flexzan, mitraflex, allevyn.
Should be used on generally glean wounds, but can handle more drainage than thin films
Definition
FOAMS ARE FABULOUS
Term
"seaweed", calcium alginate or synthetic, non-occlusive, absorbs TONS of drainage
Definition
Alginates
Term
Max absorbant, gentle on wound bed. Comes in foam or rope like forms. Needs a secondary dressing over it for added drainage control
Definition
Alginates
Term
Thin ointments, very versatile for barrier (incontnence) or shallow wound healing (now have deneric allanderm)
Definition
Xenaderm/calmoseptine
Term
These type of creams are skin protectants
Definition
Barrier Creams
Term
These usualy come as a wipe-on or spray to prevent tape stripping of skin or maceration of wound edges.
Definition
Skin preps
Term
This type of ointment is OK for shallow wounds
Definition
Antibiotic ointments
Term
Occlusive, good for autolytic debridement, cannot handle very much drainage, can tear fragile skin.
-Duoderm, signadress (will not let anything in or out)
Definition
Hydrocolloids
Term
-Papain/urea (gladase, accuzyme, panafil, ziox) breaks down non-viable protein. Papain ureas have just been removed from market
-Collagenase (santyl) breaks down non-viable collagen
-Used with n.s damp/dry or semi-occlusives
-Must be kept damp to work, not on dry eschar
Definition
Enzymatic debriders
Term
What is the half life of Silvadene?
Definition
12 hour
Term
-An old stand-by, can be used on lots of wounds
-Contraindicated on young kids
-Use with caution on pts with decreased renal or hepatic function
-Nice antibacterial and antifungal
-Can be covered with gauze or used without dressing
Definition
Silvadene
Term
-PDGF, approved by FDA only for "diabetic" ulcers
-Very expensive
-Applied with damp-dry saline dressing
-Use on clean wounds only
Definition
Regrainex
Term
Used to hydrate or maintain hydration in a wound, come as a sheet or gel in a tube. Curagel, Vigilan
Definition
Hydrogels
Term
Silver can be added to gels, gauzes, or foams. Effective against MRSA and pseudomonias. Only have to change once a week, just re-wet in the meantime
Definition
Silver-Containing Dressings
Term
Sodium hypochlorite, used to saturate gauze/packing; can be used for grossly necrotic/infected wounds, not for wounds with significant amounts of granulation tissue.
Definition
Dakin's Solution
Term
Full strength of Dakin's is best for what?
Definition
Infection
Term
Half strength of Dakin's is best for what?
Definition
Suspected colonization
Term
Chlorine is the active ingredient; harsh on granulation
Definition
Chlorpactin
Term
Can be useful for pt with pseudomonias
Definition
Acetic acid
Term
Name 4 aspects of wound classification
Definition
-Depends on type of wound
-Pressure sores use a staging system
-Other wounds use a classification system of full thickness - thru the dermis
-Some special classification systems are used at times (burns, diabetic neuro)
Term
Full thickness with usually require what?
Definition
Grafting
Term
The outermost layer, provides protection, moisture barrier
Definition
Epidermis
Term
Epithelial cells, has basement membrane where new cells are born, cells mature as they are pushed out to the epidermise
Definition
Dermis
Term
Fat, fibrous tissue
Definition
Subcutaneous
Term
Name the 4 layes
Definition
Epidermis
Dermis
Subcutaneous
Muscle, Bone, Organs
Term
Name the 6 stages of pressure sores
Definition
1. Non-blanchable erythema
2. A blister or shallow crate, not into subcutaneous
3. A wound thru the dermis into the subcut, but not into ms or bone
4. A deel wound involving ms, bone, etc
5. Unstageable: eschar or slough on bed not allowing you to see the bottom of the wound
6. Deep tissue injury
Term
A term being used more widely recently to describe the deep purplish discoloration seen on patients when a severe insult has occurred,but he tissue is not opened (epidermis intact)
Definition
Deep tissue Injury
Term
Do not make the mistake of staging this as stage 1 b/c its almost always deeper
Definition
Deep tissue injury
Term
What should you stage a deep tissue injury
Definition
Unstageable
Term
Occurs from having prolonged pressure over a bony prominence usually but can be any area of the body. Can happen in as little as 15-30 minutes on bony areas under direct pressure (heels, ischial tuberosity)
Definition
Pressure Sores
Term
These are thought to originate deeply and expand outward. Weight-shifts and pressure-reducing surfaces are used to prevent these.
Definition
Pressure sores
Term
Supposed to prevent capillary closing pressure, therefore allowing blood to continue to perfuse tissues. Ex: Clinitron Beds (air-fluidized)
Definition
Pressure Relieving Suface
Term
Does not completely prevent capillary closing, so still requires weight shifts or turning. EX: low air loss mattress, w/c cushion
Definition
Pressure Reducing Surface
Term
-Occur on lower leg or foot
-Round wound with sharply demarcated edges
-Usually have a pale, red base
Definition
Arterial Insufficiency Ulcers
Term
-Occur in patients who have poor arterial perfusion to the legs
-Rubor of dependency*, thin shiny skin, no hair, cold extremity (poikilothermia)
- Usually painful, especially with elevation or gait (claudication)
- ABI less than 0.8
Definition
Arterial Insufficiency Ulcers
Term
These look like hole punches
Definition
Arterial insufficiency ulcers
Term
-Usually occur on the ankle, with medial ankle being the most common area, but can occur anywhere on lower leg.
-Associated with hemosideran staining
-Waxy, thick skin, edema = probably mostly venous
-Thin, frail skin may indicate areterial componenet also
-THe entire leg can be oozing serous fluid in severe cases, with dozens of small open ulcers, or can be one large ulcer with eschar/slough
Definition
Venous Insufficiency Ulcers
Term
-These are typially shallow wounds with significant slough and irregular borders, minimal pain
-Can be present for years without significant change
Definition
Venous Insufficiency Ulcers
Term
How can venous insufficiency ulcers be treated?
Definition
-Compression (MOST IMPORTANT)
-Good local wound care
-Unna's boots (effective ONLY if pt is ambulatory)
-Layer compression wraps provide more consistent compression in many professionals' opinions
-Sequential compression pumps (lymphedema) (good for ambulatory or not)
Term
How are the location different for venous and arterial ulcers?
Definition
1.Venous - medial/ant ankle, medial lower legs
2.Arterial - anywehre on foot/leg
Term
What does the wound/skin look like with venous insufficiency ulcers?
Definition
Slough, irregular borders, lots of drainage, hemosideran stain, wet appearance
Term
What does the wound/skin look like with arterial insufficiency ulcers?
Definition
pale, granulated base, uniform round wound, rubor of dependency, thin and shiny skin
Term
<0.8 indicates impaired arterial perfusion (do not trust pulse palpation)
Definition
ABI
Ankle/Brachial Index
Term
How is pain different with arterial and venous insufficiency ulcers?
Definition
Arterial - painful, with LEs painful when elevated
Venous - minimal pain
Term
What does TCOM stand for?
Definition
Transcutaneous Oximetry Measurement
Term
a non-invasive method of testing for arterial insufficiency by measuring the cutaneous oxygen saturation
Definition
TCOM
Term
What might low values indicate with a TCOM?
Definition
The need for arteriography and revascularization
Term
What might marginal values indicate with a TCOM?
Definition
The use of hyperbaric oxygen therapy
Term
Surgeons commonly use the TCOM test to help determine levels of what?
Definition
Amputation (at which level a pt is most likely to heal)
Term
The true "diabetic" wounds. People with diabetes can have any type of wound. Classify them carefully.
Definition
Neuropathic wounds
Term
If a diabetic person has a pressure sore how do you classify it?
Definition
Using the pressure system (not as a neuropathic wound)
Term
__ __ wounds occur typically on the bony prominences on the plantar surface of the foot, especially the met heads, but can also occur on other surfaces of the foot.
Definition
Diabetic Neuropathic
Term
The origin of these wounds are altered biomechanics of the foot, resulting in excessive shear to areas of the foot. People with diabetes lose protective sensation to the feet, and the result is that over time the feet are subjected to many small insults that result in altered structure
Definition
Neuropathic wounds
Term
What do neuropathic wounds typically look like?
Definition
Round with large amounts of callous built up around the perimeter
Term
Can neuropathic wounds occur in anyone with neuropathy or just people with diabetes?
Definition
Anyone with neuropathy
Term
How can you treat neuropathic wounds
Definition
1. Must remove the shear. Pts must be placed in total contact casts, custom boots, custom insoles, etc or become NWB for these wounds to heal. Pt compliance is a must.
2. Shave the perimeter callous to enable the epithelial cells to migrate over the granulation.
3. Good local wound care, moist not wet
4. Good control of blood sugars
Term
Can you test sensation over a callous area?
Definition
NO
Term
What classification scale is used for diabetic sores?
Definition
Wagner Scale
Term
list the 5 grades of the Wagner scale
Definition
Grade 0: Preulcerous lesion, healed ulcer or bony deformity
Grade 1: Supeficial ulcer, no subcutaneous involvement
Grade 2: Subcutaneous, and may involve bone, ligaments or joint capsule
Grade 3: Osteitis, abscess, or osteomyelitis
Grade 4: Gangrene of a digit
Grade 5: Gangrene requiring foot amputation
Term
Name the 3 categories of skin tears
Definition
Category 1: Fully approximated (less than 1mm space), usually occurs in a wrinkle
Category 2: partial thickness wound, but flap is present
Category 3: still partial thickness wound, but there is no viable flap
Term
How should you try to manage skin tears?
Definition
-Try to save the flap
-Moist wound care for open wound, possibly just a topical for category 1's. Polymems work great.
-If flap dies or you cannot unroll, will need to be debrided.
Term
Every wound eval should include the following:
Definition
-Color: describe the wound bed (%granulation, %slough, %necrosis, % bone, etc)
-Odor: musty, foul, sweet (pseudomonias)
-Drainage: amount, color, texture
-Extent: measure of the wound
-Surrounding skin: describe the perimeter, surrounding skin
Term
How often should you measure the wound?
Definition
At least weekly
Term
Name the different methods of measuring wounds
Definition
-Use width x length x dept (width is horizontal, length is vertical)
-Use the clock system with dorsum or head of the person being 12:00
-Use volume (rare)
-Trace the wound on special film
Term
A shelf along the perimeter of a wound
Definition
Undermining
Term
Long thin opening in wound, a tunnel is open at both ends with a tract "dead ends"
Definition
Tracts/tunnels
Term
What are 6 questions you can ask to get the big picture about the wound?
Definition
1. What is etiology?
2. What has been tried before?
3. What medications are being taken?
4. Is cellulitis present, and is the pt on antibiotics?
5. Is the pt going to be able/willing to be compliant with your plan of care?
6. What allergies does the pt have?
Term
The original vacuum dressing, uses foam on wound base, covered with film dressing, vacuum applied. Usually changed MWF
Definition
VAC by KCI
Term
This type of vacuum dressing uses gauze or foam to wound base. Changed BIW if gauze, TIW if foam
Definition
Smith and Nephew Vista/Versatile One
Term
Lessens the amount of dressing changes you have to do
Definition
Wound Vac
Term
Can you use topicals under a vacuum dressing?
Definition
yes
Term
Which type of vacuum dressing is cheaper and the gauze is easier to use with undermining and tunnels?
Definition
Smith and Nephew Vista/Versatile One
Term
This type of wound dressing has more options, it instills solutions into wounds. Fenestrated dressing for body cavities
Definition
VAC by KCI
Term
-Special pressure chambers used
-1.5 to 3 times normal atmospheric pressure
-Used for gas gangrene, osteomyelitis, most often
-Medicare will cover if standard wound care has not been effective and wound demonstrates progress with HBO
Definition
Hyperbaric oxygen
Term
-Human skin has endogenous biocurrents
-Current types used are DC, TENS, and HVPC.
-High volt has the most support int he literature
-Medicare covers if wound has shown no progress with standard wound care, MD has to recently approve for OP coverage
Definition
E-Stim
Term
-Has been rumored to be effective in producing more fibroblasts and collagen
-Never gained widespread acceptance
-Not reimbursed by Medicare
-Now have ultrasound technology for debridement, which is Medicare reimbursed, called MIST
Definition
Ultrasound
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