Dermatopharmacology Flashcards
___ are 1/2 water and 1/2 oil with an emulsifier
Cream
Indication for a cream
oozing “wet” skin conditions
Characteristics of Creams (3x)
1) Spread easily (good for large areas)
2) Well absorbed
3) Wash off with water
___- are 20% water in 80% oil
Ointments
Components of Ointments (2x)
1) Mineral Oil
2) Petroleum Jelly
* ** Hydrocarbons
Characteristics of Ointments (3x)
1) Greasy and Occlusive
2) Stay on skin surface
3) Not well absorbed
Indications of Ointments (2x)
1) Dry skin since they trap moisture
2) Increase absorption of active ingredient
Ointments or Creams are less likely to cause an allergic rxn
Ointments
When to clean hands
1) Before touching a patient
2) Before clean/aseptic procedures
3) After body fluid exposure
4) after touching pt
5) After touching pts surroundings
Alcohol-base disinfectant isn’t effective against ___
C. Diff
List the components of moisturizers
1) Emollients
2) Humectants
3) Horny Substances Softeners
Examples of Emollients (components of moisturizers) (4x)
1) Petrolatum
2) Lanolin
3) Mineral Oil
4) Dimethoate
Examples of Humectants (3x)
1) Glycerin (glycerol)
2) Lecithin (glycerophospholipids)
3) Propylene glycol
Examples of Horny Substances (3x)
1) alpha hydroexyacids (lactic, citric, glycolic)
2) Salicylic Acid
3) Urea
List the different bases for Sunscreen (3x)
1) PABA and its Esters
2) Benzophenones
3) Dibenzoylmethanes
PABA is active in the ___ range but isn’t used as much anymore due to ___ rxn
1) UVB
2) Hypersensitivity
___ are active in the UVA and UVB range and contain salicylate stabilizers
Benzophenones
List two examples of Benzophenones
1) Oxybezone
2) Octocrylene
List two examples of Salicylate Stabilizer
1) Homosalate
2) Octosalate
____ are active in the UVA range only and are useful for __ induced photosensitivity and cutaneous lupus
1) Dibenzoylmethanes
2) Drug
Active component in Sunshades-
Titanium Dioxide
___- is the ratio of minimal erythema dose with sunscreen divided by the minimal erythema dose w/o sunscreen
SPF
What is the common disinfectant that is used in hospitals
Chlorhexidine
Name the growth factor that promotes wound healing
Becaplermin (Platelet-Derived Growth Factor)
____ is a platelet-derived growth factor that promotes proliferation and angiogenesis
Becaplermin
____ is the only FDA approved drug that is used for chronic diabetic foot ulcers
Becaplermin
wound Dressings: When a wound is in the debridement stage use a ____
Hydrogel
Wound Dressings: When the wound is in the granulation stage use ___ dressing
Foam and low adherence
When the wound is in the epithelization stage use ____ dressing
Hydrocolloid and Low Adherence
List the 3 active agents in Neosporin
1) Bacitracin
2) Neomycin
3) PolymyxinB
Mechanism of Action of Bacitracin
Inhibits cell wall synthesis
Indication for Bacitracin (4x)
1) Gram + Organisms
2) Anaerobic Cocci
3) Neisseria
4) Tetanus Bacillus
Neomycin is an ___glycoside
aminoglycoside
MOA of Neomycin
Binds 30s Subunit to decrease protein synthesis
Indication for Neomycin
Gram Negative Organisms
MOA of PolymyxinB
Binds to phospholipids to alter membrane permeability and damage cytoplasm
Indications of Polymyxin B (5x)
1) Gram Negative Organisms
2) P. Aeruginosa
3) E Coli
4) Enterobacter
5) Klebsiella
Imidazoles are an anti-____ agent
Fungal
MOA of Imidazoles
Block ergosterol synthesis
Indications for Imidazoles
Dermatophytes and Yeast
List the different types of Imidazoles
1) Miconazole
2) Clotrimazole
3) Efinaconazole
4) Ketoconazole
What two agents are used for Vulvovaginal Candidias
1) Miconazole
2) Clotrimazole
What agent is used for onychomycosis
Efinaconazole
Antifungal is used for dermatophytosis, Candidiasis, and Seborrheic Dermatitis
Ketoconazole
MOA of ciclopirox
Disrupts macromolecular synthesis
Ciclopirox is a ____ spectrum antifungal
Broad
Indications for Ciclopirox
1) Dermatophytes
2) Candida
3) Malassezia
Terbinafine is an anti-____
Fungal
List all of the Antifungals (6x)
1) Imidazole
2) Ciclopirox
3) Terbinafine
4) Tolnaftate
5) Nystatin
6) Amphotericin B
MOA of Terbinafine
Inhibits squalene epoxidase
Purpose of Squalene Epozidase
1) Key enzyme of Ergosterol
indication for Terbinafine
1) Dermatophytes BUT NOT YEAST
2) Mucous Membranes
Indication for Tolnaftate
Dermatophyte and Malessezia
***NOT Candida
Which two anti-fungals can treat Malassezia
Ciclopirox
Tolnaftate
Nystatin MOA
Alters membrane permeability
Indications for Nystatin
1) Mucosal Candida
- Hold in mouth before swallowing
2) Cutaneous Candida
MOA of Amphotericin B
Alters membrane permeability
Indication of Amphotericin B
Candida (Cutaneous)
Which antifungals cannot treat Candida?
1) Tolnaftate (Lamisil)
2) Terbinafine (Tinactin)
MOA of Acyclovir
Synthetic Guanine Analog