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115 Cards in this Set

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  • Back
What are the two different types of ulcers?
pressure ulcers

venous leg ulcers (stasis)
What is the patho of venous leg ulcers?

How does this differ than the path of pressure ulcers?
internal pressure from blood stasis

pressure ulcers have external pressure
What is the definition of venous leg ulcers?
inflammation of legs with edema and pigmentation resulting in necrotic crater like lesions of the skin, caused by poor venous return secondary to incompetent valves of deep veins
Fluid and edema compress ___________ and ________ and create an environment for a venous leg ulcer to develop.
arteries and veins
What is the definition of a pressure ulcer?
a specific tissue injury caused by unrelieved pressure that results in damage to underlying tissue.
What are the risk factors for pressure ulcers?
immobility
malnutrition
incontinence
impaired mental status
diminished sensation
elevated body temp
localized edema
chronic illness
Braden assessment tool uses risk factors, when the score is low on the tool, what does that mean?
the risk is HIGH
Shearing force causes damage to what part of the skin?
deep in the tissues, causing undermining at the presure point....
underlying tissue capillaries are stretched and angulated by the shear force
Friction force causes damage to what part of the skin?
epidermis or top layer of the skin...skin appears red and painful and can be called sheet burn.
Staging should only be used with pressure ulcers over....
bony prominences
Staging of pressure ulcers should focus on the _______ of the ulcer at the time of assessment.
depth
Stage I is basically redened skin that does not______________.
blanch. Red that you can't make white. Nonreactive hyperemia
What is different about stage 1 than any other stage?
it is the only stage that the problem is totally reversible.
What part of the skin is involved in Stage 1?
epidermis
What part of the skin is involved in stage 2 PU?
epidermis and dermis
Describe what a stage 2 PU can be?
blister
abrasion
shallow crater
swollen
painful
What part of skin is involved in stage 3 PU?
full thickness of the skin, including sub cut tissue. may include fascia
If there is no sub cut tissue, then what will happen to the staging of an ulcer?
it can go right from stage one to stage 3 or four. skipping in between
How big does an ulcer have to be in stage 3?
it can be as small as a pin hole...1/2 size of IV
What is the look of a stage 4 PU?
extensive, including tendons, muscles and bones. Can appear small on surface, but have large sinus tracts underneath.
Wound that does not have a break in the skin. Give an example of one.
closed wound.

being struck by blunt object, straining, twisting or deceleration force against body....
Wound that proceeds through an orderly and timely reparative process that results in sustained restoration of anatomical and functional integrity.
acute wound. trauma from a sharp object.
Example of a chronic wound
pressure ulcers,
Intentional wound example
surgical incision, needle stick
Superficial wound only involves this part of the skin.
epidermal layer
Perforating wound is a wound in which a foreign object enters and ........
exits an internal organ
Clean wound description
wound containing no pathogenic organism. Example is closed surgical wound not entering GI, respiratory, genital or uninfected UI tract or oropharyngeal cavity
Clean-contaminated wound
Wound made under aseptic conditions, but involving body cavity that normally harbors microorganisms: GI, respt, urinary, oropharyngeal, genital
Contaminated wound
wound existing under conditions in which presence of mo is likely.
Colonized wound
one step further than Infected Wound....chronic wound
Laceration -


Abrasion -


Contusion -
laceration (tearing of tissues with irregular wound edges)

abrasion (superficial wound involving scraping or rubbing of skin's surface)

contusion (closed wound caused by a blow to body or blunt object)
What are the three stages of primary intention?
inflammatory stage (up to 3 days)

proliferative phase (3-24 days)

maturation phase (month to years)
What is tertiary intention?
surgery & secondary intention
Wound edges are approximated.....what does it mean?
they are touching, closed
Partial thickness wound heals by....

Full thickness wound heals by....
partial heals by regenration b/c it is only top layer

full thckns heals by scar tissue b/c it is deeper and can not regenrate
What does the leukocyte count have to get to for a patient to be nutritionally at risk?
1800 WBC count
What is normal range of serum albumin?
3.5-5.0 shows nutritional status. Low is bad

serum album also gives index on ability to heal
What does obesity have to do with wound healing?
the more subcutaneous tissue that they have,
Smoking affects wound healing because.....
it lowers hemoglobin ability to carry o2 and b/c of vasoconstriction
A wound can't heal if it is.....
bleeding.
What is the main purpose of the inflammatory phase?
vessels constrict, platelets gather to stop bleeding. clots form a fibrin matrix, histamine results in vasodilation of surrounding capilarries and exudate and wbc into damaged tissues.


Basically: controls bleeding and establishes a clean wound bed
What are some wound characteristics during the inflammatory phase of wound healing?
localized edema, redness, warmth and throbbing. There is no value in attempting to cool the area or reduce the swelling unless the swelling occurs within a closed compartment.
What is the main purpose of the proliferative phase?
filling the wound with granulation tissue, contraction of wound (and collagen added) and resurfacing of the wound by epithelialization
Serous drainage is...
clear, watery plasma
Purulent drainage is....
thick, yellow, green tan or brown.
Serosanguineous drainage is....
pink, pale, red, watery, mixture of clear and red
Sanguineous drainage is.....
bright red, indicating active bleeding
If a wound is red, what should you do?
protect it. usually in the late regenration phase. Keep it clean and dry.
If a wound is yellow, what should you do?
cleanse it. Usually contains liquid or slough and purulent drainage
If a wound is black, what should you do?
debride.
What are the six categories for the Braden Pressure Ulcer Risk Assessment?
sensory perception

moisture

activity

mobility

nutrition

friction and sheer
The primary concern of a puncture wound is....
internal bleeding and infection
What is tx for stage 1 PU?
frequent turning to relieve pressure

use pressure relieving devices

keep client clean, dry and well nourished
What type of drsg is used for stage 1 PU?
Tegaderm
What is tx for stage 2 PU?
maintain moist environment

use saline or occlusive dressing that promotes natural healing
What is tx for stage 3 PU?
debride by using wet to dry dressing, surgical intervention or proteolytic enzymes
What is tx for stage 4 PU?
cover with non-adherent dressing and change q 8-12 hrs. may require skin grafts
What is main purpose of Tegadern film dressing on stage 1 PU?
protects (from friction and decreases surface injury)
What is main purpose of the other dressings for stage 2-4 PU?
maintain it moist & protects, absorbs excessive moisture, wicks drainage away, etc
How soon should redness be gone from an area of pressure once the pressure is removed?
1 hour and 40 minutes....if it is not, then you can not use a turn schedule of q2h
Why do you need the following for wound healing?

calories

protein

vit c

vit a


vit e


zinc


fluid
calories - cell energy

protein - neogenesis, collagen, wound remodeling

vitamin c - collage, capillary health, fibroblasts

vitamin a - epithelization, wound closure


vitamin e - no known role


zinc - collage and protein


fluid - essential fluid environment for all cell function
These three lab values signal a clinically significant malnutrition.
serum albumin <3.5
lymphocyte count less than 1800
body weight decreased more than 15%
How long can hydrocolloid (Duoderm) dressings stay in place?
3-7 days, no need to cover, water resistant
When do you NOT use hydrocolloid (Duoderm) dressing?
when the wound is infected

with a fistula

when a wound has a deep tract
Which type of dressing do you use for a wound with minimal exudate?
Tegaderm
Why do you use normal saline to clean a wound?
because it doesn't kill the good guys
What does heat do to the wound/injury?
causes vasodilation and increases blood flow. Limit to 20-30 or you will have reflex vasoconstriction
List the actions of cold therapy.
vasoconstriction

local anesthesia

reduced cell metabolism

increased blood viscosity

decreased muscle tension
List the actions of heat therapy.
vasodilation

reduced blood viscosity

reduced muscle tension

increased tissue metabolism

increased capillary permeability
If a patient is at high risk for skin breakdown, what might be used prophylactically?
benadryl
List in order of frequency, the most common sites of infection.
urinary tract

wound

respiratory

blood stream
What are the three stages of illness?
prodromal phase

full illness phase

convalescent phase
In what stage do specific symptoms occur?
full illness phase
What is core temperature?

Give example locations
temperature of the body's deep tissues

rectum
tympanic membrane
esophagus
pulmonary artery
urinary bladder
What is surface temperature?

Give example locations
more toward the surface

examples: skin, oral axillae
What is acceptable temperature for humans?
96.8-100.4
What is thermoregulation?
the balance between heat lost and heat produced

done by hypothalamus
What are some mechanisms of heat loss?
sweating
vasodilation
inhibition of heat production
What are some mechanisms of heat production?
vasoconstriction (which reduces blood flow to skin and extremities)

voluntary muscle contraction & shivering
When does shivering begin?
when vasoconstriction is ineffective in preventing additional heat loss
What is basal metabolism?
the amount of heat produced by the body at absolute rest
An involuntary body response to temperature differences in the body.

It requires a significant amount of energy.
shivering
What is nonshivering thermogenesis?
occurs primarily in neonates. Because they can not shiver, a limited amount of vascular brown tissue, present at birth, is metabolized for heat production.
What are the list of four types of heat loss?
radiation

conduction

convection

evaporation
The transfer of heat from the surface of one object to the surface of another without direct contact between the two.
Radiation, up to 85% of the body's surface radiates heat to the environment.
Give an example of affecting radiation in a patient.
removing blankets will increase heat loss thru radiation

standing up increases radiation, fetal position decreases radiation
The transfer of heat from one object to another WITH DIRECT CONTACT.
Conduction
Give an example of conduction with a patient.
ice pack on leg

aquatermia pad
Transfer of heat away by air movement.
Convection (fan)

increases when moistened skin comes into contact with slightly moving air
Transfer of heat energy when a liquid is changed to a gas.
Evaporation

-600-900ml a day evaporates from the skin
Heat loss mechanisms couldn't keep pace with the excess amount of heat produced.
Pyrexia or fever
List the four types of fevers:
Sustained -

Intermittent

Remittent

Relapsing
Sustained Fever
constantly above 100.4, no changes
Intermittent Fever
spikes and drops to normal within 24 hours
Remittent Fever
Spikes & Falls w/ out return to normal
Relapsing Fever
Febrile & normothermia in spans greater than 24 hours (might take a day or two to peak and fall)
Give the ranges for:

low grade fever

high grade fever

hyperpyrexia
low grade: 98.8-100.6

high grade: >100.6

hyperpyrexia >104.9
For every degree of temperature, we need ______ more O2 at a cellular level.
13%
Describe heat stroke.
heat stroke: prolonged exposure to sun or high environ. temps that overwhelm the body's heat loss mech.

S/S: giddiness, confusion, delirium, excess thirst, nausea, muscle cramps, visual disturbances and even incontinence.
Describe heat exhaustion.
profuse diaphoresis results in excess water and electrolyte loss.

s/s of FVD: (equal loss of water and electrolytes): tachycardia, dry mm, thirst, poor skin turgor, oliguria, slow filling peripheral veins, neuro changes: lethargy, confusion, pulse up, bp down
What are the CORE body temp ranges that signal hypothermia?
96.8 and below...

moderate 93.2

severe 86.0
What is frostbite?
ice crystals forming inside the cell
What are the stages of a febrile episode?
chill

fever (plateau)

flush
Describe chill phase
body trying to increase core body temperature; pale, cool skin, shivers, goose-flesh c/o bbeing cold
Describe fever phase.
temp reached new higher set point, warm to touch, flushed, increased thirst, malaise, weakness, achy, drowsy or restless
Describe flush phase.
diaphoresis, decreased shivering, flushed, warm to touch
Interventions for chill stage
apply blankets
increase intake
restrict activity
supplemental o2
Interventions for fever phase
cover lightly
avoid chilling
increase intake
apply lubricate to lips and nares
use tepid sponge bath
increase air circulation to hasten cooling
Interventions for flush phase
use tepid sponge bath
avoid chilling
increase intake
restrict activity
cover lightly with clothing/linen
When do you cover?
chill phase (extra blankets)
fever phase (lightly)
flush phase (lightly)
When do you bathe?
fever, flush phase, never chill phase
Increased neutrophils
bacterial
Increased lymphocytes
viral
What is important to remember about the ND: impaired skin integrity?
need location

:sacrum
:perianal
Remember that with risk for infection, this is the one you use for....
surgical incisions. DO NOT use impaired skin integrity