Derm 2 Flashcards

1
Q

Corticosteroid - inceases in concentration

A

Increases in concentration of a particular corticosteroid within a finite range in a defined vehicle enhance potency

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2
Q

Corticosteroid - Occlusive dressings

A

Occlusive dressings promote cutaneous hydration and significantly increase absorption and potency.

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3
Q

Corticosteroid - Occlusion can enhance

A

Occlusion can enhance topical corticosteroid potency by as much as 100-fold.

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4
Q

Corticosteroid ointment preperations

A

preparations generally allow better percutaneous drug absorption and are therefore more potent than creams and lotions. One exception is the super-potent topical corticosteroid (e.g.,betamethasonedipropionate) that may be packaged in “optimized” cream vehicles.

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5
Q

Daily use of super high potency topical corticosteroids – do not exceed

A

3 weeks (persistent lesions on small areas could be treated longer)

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6
Q

Corticosteroids - High potency and medium strengths – rarely cause cutaneous side

A

effects if used for less than 6 to 8 weeks; could occur with shorter courses, especially on the face and intertriginous areas

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7
Q

Corticosteroids - Intermittent therapy

A

Intermittent therapy – maintaining long-term control

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8
Q

Corticosteroids - Discontinue when

A

Discontinue when skin condition has resolved

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9
Q

Corticosteroids Rebound

A

Rebound flares – avoid by tapering topical therapy with a gradual reduction in both potency and dosing frequency at two-weeks intervals

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10
Q

Topical Glucocorticoids - SE

A

SE are rate with low potency

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11
Q

Topical Glucocorticoids facial

A

Facial, intertriginous, genital dermatoses – treat short 1 to 2 weeks intervals – most susceptible to corticoids-induced atrophy, telangiectasia, and acneiform eruption

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12
Q

Topical Glucocorticoids ADR

A
Local reactions
Thinning of the skin
Stretch marks
Purpura
Telangiectasia
Hypertrichosis
Atrophy
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13
Q

Topical Glucocorticoids - Saver than

A

Safer than systemic glucocorticoids

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14
Q

Topical Glucocorticoids - Tachy

A

Tachyphylasix

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15
Q

Topical Glucocorticoids - ADR Systemic

A

Systemic toxicity
More likely with higher doses and long-term therapy
Growth retardation in children
Adrenal suppression

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16
Q

Topical Glucocorticoids - Administration

A

Apply in a thin film and gently rub into the skin

Do not use occlusive bandages (or tight-fitting diapers and plastic pants)

17
Q

Pediatrics - Safe

A

use of lower potency (groups 4 to 7) – short durations, appropriate inflammatory conditions

18
Q

Pediatrics - require

A

Require less - infants be given one-fifth of the adult dose, children be given two-fifths of the adult dose, and adolescents be given two-thirds of adult doses

19
Q

Pregnant women - mild or moderate

A

Pregnant women - mild or moderate

20
Q

pregnancy if potent or

A

potent or super potent topical corticosteroids are needed, the amount used should be kept to a minimum; monitor fetal growth.

21
Q

Pregnancy it is not known

A

whether topical corticosteroids are secreted in breast milk; no adverse effects have been noted in lactating women.

22
Q

How much to dispense?

A

Considering the amount used per application
The number of applications to be given daily,
The duration of therapy
The Fingertip Unit (FTU)

23
Q

The Fingertip Unit (FTU)

A

Approximately equivalent to 0.5 and 0.4 grams of ointment in men and women,respectively.
Head and neck = 4.5; trunk (front or back) = 7; one arm = 3; one hand = 1; one leg = 6; and one foot = 2.

24
Q

For 3 times daily applications – 9 grams of cream covers

A

9% of skin area daily

25
Q

Quantity of cream to dispense for complete coverage of area for 3x daily applications for 10 days

A
Face: 45g
Chest or back: 180g
1 arm: 90g
1 forearm: 45g
1 hand or foot: 45g
1 leg: 180g
26
Q

Avoiding under and

A

over dispensing.

27
Q

Consider the amount used per

A

application, the number of applications to be given daily, and the duration of therapy.

28
Q

For a three times a day application, 9 grams of cream will cover

A

9% of the skin area daily.

29
Q

Example OF RULE OF NINE

A

Entire right leg, you take 9 (front of leg) and 9 (back of leg) which equal 18. Take 18 x 10 = 180grams. This is for a three times a day application to the entire right leg for 10 days.
Front of the forearm – it would be half of 9 = 4.5 x 10 = dispense a 45 grams tube.

30
Q

Pediatrics: greater surface

A

greater surface area-to-weight ratio, permeability of skin increased in very young, avoid high potency corticosteroids, and avoid occlusive dressings.

31
Q

Pregnant – alterations in hormonal

A

alterations in hormonal balance result in skin changes. Many dermatological products are not recommended in pregnancy.

32
Q

Geriatrics – skin is less

A

permeable to drugs due to an altered lipid content and loss of subcutaneous tissues; changes in CNS alter perception of itching and pain; atrophy of the reticuloendothelial system may impair the immune system; progressive impairment of peripheral vascular symptom decreases sensation.

33
Q

Combination anti-fungal/topical corticosteroid products – consider

A

doing a KOH scraping to help determine if its is fungal

34
Q

Topical Corticosteroids - Other SE

A

Other side effects that can occur with topical corticosteroid use include acneiform eruptions, purpura, hypopigmentation, glaucoma, and suppression of the hypothalamic-pituitary axis

35
Q

Topical Corticosteroids - Intermitent therpay

A

Intermittent therapy with topical corticosteroids can be effective for long-term maintenance therapy in some conditions (e.g., twice-weekly application in well-controlled atopic dermatitis to reduce risk of relapse).

36
Q

Topical Corticosteroids Pulse therapy

A

Pulse therapy – 2 weeks on and 2 weeks off.

37
Q

Topical Corticosteroids facial

A

intertriginous, and genital dermatoses should be treated for short one to two-week intervals. These areas are more susceptible to corticosteroid-induced atrophy, telangiectasia, and acneiform eruption.