Chapter 24: Med Surg Flashcards Preview

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Flashcards in Chapter 24: Med Surg Deck (69)
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1

UVA light

responsible for tanning, elastic tissue damage and actinic skin damage

2

UVB light

responsible for sunburn, major developer of skin cancer

3

tanning

skin's response to injury and increased melanin

4

chemical sunscreen

light creams and lotions designed to absorb or filter UV light, resulting in diminished UV light penetration

5

physical sunscreen

thick and opaque heavy creams that reflect UV radiation

6

PABA

blocks UVB rays

7

Parsol

blocks UVA

8

benzophenones

block both UVB and UVA

9

what was treated with radiation 30 years ago?

acne and hirtuism causing increased carcinoma in present middle aged patients

10

Vitamin A

essential for epithelial cell structure and normal wound healing

11

Vitamin B

essential for complex metabolic functions; deficiencies can cause erythema

12

Vitamin C

essential for connective tissue and normal wound healing; absence can cause scurvy or petechiae

13

Vitamin D

essential for bones

14

Unsaturated fatty acids

essential for cellular and subcellular membranes in tissue metabolism

15

biotin

water-soluble B complex prevents rashes and alopecia; e.g. liver, cauliflower, salmon, carrots, bananas

16

acanthosis nigricans

velvety dark skin of neck and body folds

17

ABCDE

cornerstone rule of self-skin examination; asymmetry, border, color, diameter >6 mm, and evolution

18

risk factors for developing skin cancer

fair skin (blonde or red hair and green or blue eyes), chronic sun exposure, family history, chemicals

19

nonmelanoma cancer

do not develop from melanocytes, instead develop in epidermis on sun exposed areas (face, head, neck, back of hands, and arms)

20

actinic keratosis

flat or elevated hyperkeratotic papules and plaques on sun exposed portions of body; greatly effect the elderly, most common of all precancerous lesions

21

basal cell carcinoma

well defined, locally invasive, epidermal basal cells, most common and least deadly and almost never spread beyond skin; some mistaken for melanoma because of curled borders and opaque appearance

22

squamous cell carcinoma

keratinizing cells, sun exposed or previously damaged skin, scaly appearance, less common but more aggressive, has potential to metastasize, biopsy should ALWAYS be performed when suspected

23

malignant melanoma

most deadly skin cancer and can metastasize to any organ

24

where does malignant melanoma frequently occur for women?

lower legs and back

25

where does malignant melanoma frequently occur for men?

trunk, head, and neck

26

cutenaeous melanoma

when melanoma begins in the skin

27

all suspected melanoma should be biopsied how?

excisional biopsy

28

what is the most important prognostic factor?

tumor thickness at time of diagnosis

29

Breslow measurement

depth of tumor in millimeters

30

Clark level

depth of invasion of the tumor; the higher the number, the deeper the tumor