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42 Cards in this Set
- Front
- Back
UV rays can cause
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premature aging
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examples of changes in the dermis caused by degenerative uv rays (4)
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loss of elasticity
thinning wrinkling drying of the skin |
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most dangerous time of the day to be in the sun
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10am-2pm standard
or 11am-3pm day light saving time |
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what percentage of uv light can penetrate through clouds
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80%
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factor that can increase possibility of sunburn (3)
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high altitudes
snow (reflects 80% of the sun's rays) or being near water |
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tanning beds and sun lamps are primarily
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UVA (wavelength - long)
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2 types of sunscreens
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chemical and physical
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sunscreens should be applied how long before goin outdoors?
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20-30 min
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regardless of sunscreen claims ALL sunscreen should be reapplied
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every 2-3 hours
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SPF stands for
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sun protection factor
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what areas can be used to assess skin of darker individuals
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oral mucosa
conjunctiva palms soles of feet |
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what reduces threshold of itching and potential skin damage from resultant scratching
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sleep ( it is restorative)
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absence of Vitamin A
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dryness of the conjunctiva and poor wound healin
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vitaimn B deficiencies manifest as dermatologic symptoms
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erythema
bullae seborrhea like lesions |
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absence of vitamin c
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scurvy
petechiae bleeding gums purpura |
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vitamin k deficiencies
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interfere with normal prothrombin synthesis in the liver and can lead to bruising
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protein necessary for adequate ____ growth and ___ ____.
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cell growth
wound healing |
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ABCD rule of self examination of skin lesions
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asymmetry
border irregularity color change/variation diameter of 6 mm or more |
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nonmelanoma skin cancers are either ____ cell carcinoma or ____ cell carcinoma
most common form of skin cancer |
basal cell
squamous cell |
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actinic keratosis
(solar kertaosis) |
consists of hyperkeratonic papules and plaques occuring sun-exposed areas
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actinic keratosis is a
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premalignant form of squamous cell carcinoma that affects nearly all of the older white population (most common of all precancerous skin lesions)
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basal cell carcinoma (BCC)
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locally invasive malignancy arising from epidermal basal cells. most common type of skin cancer and also least deadly
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malignant melanoma
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neoplastic growth of melanocytes anywhere on skin, eyes, or mucous membranes
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malignant melanoma
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tumor arising in melanocytes which are the cells producing melanin
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melanoma has the ability to metastasize to any ___ including the ___ and ___.
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organ
brain heart |
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melenoma
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most deadily form of skin cancer
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breslow measurement determines
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depth in mm
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clark level indicates
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number of skin layers involved
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according to clark level
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higher the number deeper the melenoma
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dysplastic nevus
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atypical moles
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bacterial infection occurs when the
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balance between the host and the microorganisms is altered
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curettage
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removal and scooping away of tissue using an instrument with a circular cutting edge attached to handle
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punch biopsy
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cores out a small cylinder of skin when its sharp edge is twirled between fingers
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cryosurgery
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use of subfreezing temp to destroy epidermal lesions
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skin scraping
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done with a scalpel blade to obtain a sample of surface cells for microscopic infection and dx
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electrodessication
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involves more superficial destruction & a monopolar electrode is used
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electrocoagulation
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deeper effect than electrodessication with better hemostasis an increased possibility of scarring
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excision (Mohs' surgery)
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microscopically controlled removal of a cutaneous malignancy
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skin grafts
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provide protection to underlying structures or to reconstruct areas for cosmetic or functional purposes
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auto graft
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from pt's own body
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isograft
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from an identical twin
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reconstructive microsurgery
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with use of operating microscope, circulation is immediately established in the free flap by anastomosis of the blood vessels from the skin flap to the vessels in the recipient site
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