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115 Cards in this Set
- Front
- Back
What are the two different types of ulcers?
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pressure ulcers
venous leg ulcers (stasis) |
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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 |
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What is the definition of venous leg ulcers?
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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
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Fluid and edema compress ___________ and ________ and create an environment for a venous leg ulcer to develop.
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arteries and veins
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What is the definition of a pressure ulcer?
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a specific tissue injury caused by unrelieved pressure that results in damage to underlying tissue.
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What are the risk factors for pressure ulcers?
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immobility
malnutrition incontinence impaired mental status diminished sensation elevated body temp localized edema chronic illness |
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Braden assessment tool uses risk factors, when the score is low on the tool, what does that mean?
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the risk is HIGH
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Shearing force causes damage to what part of the skin?
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deep in the tissues, causing undermining at the presure point....
underlying tissue capillaries are stretched and angulated by the shear force |
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Friction force causes damage to what part of the skin?
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epidermis or top layer of the skin...skin appears red and painful and can be called sheet burn.
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Staging should only be used with pressure ulcers over....
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bony prominences
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Staging of pressure ulcers should focus on the _______ of the ulcer at the time of assessment.
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depth
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Stage I is basically redened skin that does not______________.
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blanch. Red that you can't make white. Nonreactive hyperemia
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What is different about stage 1 than any other stage?
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it is the only stage that the problem is totally reversible.
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What part of the skin is involved in Stage 1?
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epidermis
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What part of the skin is involved in stage 2 PU?
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epidermis and dermis
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Describe what a stage 2 PU can be?
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blister
abrasion shallow crater swollen painful |
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What part of skin is involved in stage 3 PU?
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full thickness of the skin, including sub cut tissue. may include fascia
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If there is no sub cut tissue, then what will happen to the staging of an ulcer?
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it can go right from stage one to stage 3 or four. skipping in between
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How big does an ulcer have to be in stage 3?
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it can be as small as a pin hole...1/2 size of IV
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What is the look of a stage 4 PU?
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extensive, including tendons, muscles and bones. Can appear small on surface, but have large sinus tracts underneath.
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Wound that does not have a break in the skin. Give an example of one.
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closed wound.
being struck by blunt object, straining, twisting or deceleration force against body.... |
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Wound that proceeds through an orderly and timely reparative process that results in sustained restoration of anatomical and functional integrity.
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acute wound. trauma from a sharp object.
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Example of a chronic wound
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pressure ulcers,
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Intentional wound example
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surgical incision, needle stick
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Superficial wound only involves this part of the skin.
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epidermal layer
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Perforating wound is a wound in which a foreign object enters and ........
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exits an internal organ
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Clean wound description
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wound containing no pathogenic organism. Example is closed surgical wound not entering GI, respiratory, genital or uninfected UI tract or oropharyngeal cavity
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Clean-contaminated wound
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Wound made under aseptic conditions, but involving body cavity that normally harbors microorganisms: GI, respt, urinary, oropharyngeal, genital
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Contaminated wound
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wound existing under conditions in which presence of mo is likely.
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Colonized wound
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one step further than Infected Wound....chronic wound
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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) |
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What are the three stages of primary intention?
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inflammatory stage (up to 3 days)
proliferative phase (3-24 days) maturation phase (month to years) |
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What is tertiary intention?
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surgery & secondary intention
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Wound edges are approximated.....what does it mean?
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they are touching, closed
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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 |
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What does the leukocyte count have to get to for a patient to be nutritionally at risk?
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1800 WBC count
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What is normal range of serum albumin?
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3.5-5.0 shows nutritional status. Low is bad
serum album also gives index on ability to heal |
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What does obesity have to do with wound healing?
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the more subcutaneous tissue that they have,
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Smoking affects wound healing because.....
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it lowers hemoglobin ability to carry o2 and b/c of vasoconstriction
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A wound can't heal if it is.....
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bleeding.
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What is the main purpose of the inflammatory phase?
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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 |
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What are some wound characteristics during the inflammatory phase of wound healing?
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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.
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What is the main purpose of the proliferative phase?
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filling the wound with granulation tissue, contraction of wound (and collagen added) and resurfacing of the wound by epithelialization
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Serous drainage is...
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clear, watery plasma
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Purulent drainage is....
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thick, yellow, green tan or brown.
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Serosanguineous drainage is....
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pink, pale, red, watery, mixture of clear and red
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Sanguineous drainage is.....
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bright red, indicating active bleeding
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If a wound is red, what should you do?
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protect it. usually in the late regenration phase. Keep it clean and dry.
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If a wound is yellow, what should you do?
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cleanse it. Usually contains liquid or slough and purulent drainage
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If a wound is black, what should you do?
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debride.
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What are the six categories for the Braden Pressure Ulcer Risk Assessment?
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sensory perception
moisture activity mobility nutrition friction and sheer |
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The primary concern of a puncture wound is....
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internal bleeding and infection
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What is tx for stage 1 PU?
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frequent turning to relieve pressure
use pressure relieving devices keep client clean, dry and well nourished |
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What type of drsg is used for stage 1 PU?
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Tegaderm
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What is tx for stage 2 PU?
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maintain moist environment
use saline or occlusive dressing that promotes natural healing |
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What is tx for stage 3 PU?
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debride by using wet to dry dressing, surgical intervention or proteolytic enzymes
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What is tx for stage 4 PU?
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cover with non-adherent dressing and change q 8-12 hrs. may require skin grafts
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What is main purpose of Tegadern film dressing on stage 1 PU?
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protects (from friction and decreases surface injury)
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What is main purpose of the other dressings for stage 2-4 PU?
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maintain it moist & protects, absorbs excessive moisture, wicks drainage away, etc
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How soon should redness be gone from an area of pressure once the pressure is removed?
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1 hour and 40 minutes....if it is not, then you can not use a turn schedule of q2h
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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 |
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These three lab values signal a clinically significant malnutrition.
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serum albumin <3.5
lymphocyte count less than 1800 body weight decreased more than 15% |
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How long can hydrocolloid (Duoderm) dressings stay in place?
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3-7 days, no need to cover, water resistant
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When do you NOT use hydrocolloid (Duoderm) dressing?
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when the wound is infected
with a fistula when a wound has a deep tract |
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Which type of dressing do you use for a wound with minimal exudate?
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Tegaderm
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Why do you use normal saline to clean a wound?
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because it doesn't kill the good guys
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What does heat do to the wound/injury?
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causes vasodilation and increases blood flow. Limit to 20-30 or you will have reflex vasoconstriction
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List the actions of cold therapy.
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vasoconstriction
local anesthesia reduced cell metabolism increased blood viscosity decreased muscle tension |
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List the actions of heat therapy.
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vasodilation
reduced blood viscosity reduced muscle tension increased tissue metabolism increased capillary permeability |
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If a patient is at high risk for skin breakdown, what might be used prophylactically?
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benadryl
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List in order of frequency, the most common sites of infection.
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urinary tract
wound respiratory blood stream |
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What are the three stages of illness?
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prodromal phase
full illness phase convalescent phase |
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In what stage do specific symptoms occur?
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full illness phase
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What is core temperature?
Give example locations |
temperature of the body's deep tissues
rectum tympanic membrane esophagus pulmonary artery urinary bladder |
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What is surface temperature?
Give example locations |
more toward the surface
examples: skin, oral axillae |
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What is acceptable temperature for humans?
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96.8-100.4
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What is thermoregulation?
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the balance between heat lost and heat produced
done by hypothalamus |
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What are some mechanisms of heat loss?
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sweating
vasodilation inhibition of heat production |
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What are some mechanisms of heat production?
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vasoconstriction (which reduces blood flow to skin and extremities)
voluntary muscle contraction & shivering |
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When does shivering begin?
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when vasoconstriction is ineffective in preventing additional heat loss
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What is basal metabolism?
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the amount of heat produced by the body at absolute rest
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An involuntary body response to temperature differences in the body.
It requires a significant amount of energy. |
shivering
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What is nonshivering thermogenesis?
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occurs primarily in neonates. Because they can not shiver, a limited amount of vascular brown tissue, present at birth, is metabolized for heat production.
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What are the list of four types of heat loss?
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radiation
conduction convection evaporation |
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The transfer of heat from the surface of one object to the surface of another without direct contact between the two.
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Radiation, up to 85% of the body's surface radiates heat to the environment.
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Give an example of affecting radiation in a patient.
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removing blankets will increase heat loss thru radiation
standing up increases radiation, fetal position decreases radiation |
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The transfer of heat from one object to another WITH DIRECT CONTACT.
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Conduction
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Give an example of conduction with a patient.
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ice pack on leg
aquatermia pad |
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Transfer of heat away by air movement.
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Convection (fan)
increases when moistened skin comes into contact with slightly moving air |
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Transfer of heat energy when a liquid is changed to a gas.
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Evaporation
-600-900ml a day evaporates from the skin |
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Heat loss mechanisms couldn't keep pace with the excess amount of heat produced.
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Pyrexia or fever
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List the four types of fevers:
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Sustained -
Intermittent Remittent Relapsing |
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Sustained Fever
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constantly above 100.4, no changes
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Intermittent Fever
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spikes and drops to normal within 24 hours
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Remittent Fever
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Spikes & Falls w/ out return to normal
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Relapsing Fever
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Febrile & normothermia in spans greater than 24 hours (might take a day or two to peak and fall)
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Give the ranges for:
low grade fever high grade fever hyperpyrexia |
low grade: 98.8-100.6
high grade: >100.6 hyperpyrexia >104.9 |
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For every degree of temperature, we need ______ more O2 at a cellular level.
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13%
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Describe heat stroke.
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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. |
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Describe heat exhaustion.
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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 |
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What are the CORE body temp ranges that signal hypothermia?
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96.8 and below...
moderate 93.2 severe 86.0 |
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What is frostbite?
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ice crystals forming inside the cell
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What are the stages of a febrile episode?
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chill
fever (plateau) flush |
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Describe chill phase
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body trying to increase core body temperature; pale, cool skin, shivers, goose-flesh c/o bbeing cold
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Describe fever phase.
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temp reached new higher set point, warm to touch, flushed, increased thirst, malaise, weakness, achy, drowsy or restless
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Describe flush phase.
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diaphoresis, decreased shivering, flushed, warm to touch
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Interventions for chill stage
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apply blankets
increase intake restrict activity supplemental o2 |
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Interventions for fever phase
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cover lightly
avoid chilling increase intake apply lubricate to lips and nares use tepid sponge bath increase air circulation to hasten cooling |
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Interventions for flush phase
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use tepid sponge bath
avoid chilling increase intake restrict activity cover lightly with clothing/linen |
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When do you cover?
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chill phase (extra blankets)
fever phase (lightly) flush phase (lightly) |
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When do you bathe?
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fever, flush phase, never chill phase
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Increased neutrophils
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bacterial
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Increased lymphocytes
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viral
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What is important to remember about the ND: impaired skin integrity?
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need location
:sacrum :perianal |
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Remember that with risk for infection, this is the one you use for....
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surgical incisions. DO NOT use impaired skin integrity
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