Dermatologic Procedures Lecture Powerpoint

Question 1

Skip areas

Answer 1

Spots of superficial basal cell carcinomas that remain low in the dermis and continue to replicate even after excision of all the visible lesion - can be avoided by performing mohs procedure to ensure excising what is missed

Question 2

Important pre-existing factors when considering dermatologic procedure (4)

Answer 2

• anticoagulant/bleeding
• immunosuppression
• diabetes
• cardiovascular disease (the epi injection can be a big deal)

Question 3

Cryotherapy

Answer 3

Use of liquid nitrogen in a very compressed container that makes it very cold to apply it to freeze the tissue in a freeze thaw freeze thaw pattern (each time will take less time to freeze) to death while taking proper PPE for any aerosolized disease molecules

Question 4

Shave vs punch vs excisional biopsy

Answer 4

• A shave takes a superficial layer and says nothing about the depth of the lesion, but can allow for wide excision, does not scar
• A punch biopsy is a deep incision all the way to the fatty layer of tissue to see how deep a lesion is
• excisional is removal of the entire lesion (diff from incisional which is partial), done in the case of suspect of melanoma within a few cm margins of extra spacing

Question 5

UVB phototherapy

Answer 5

Treatment for skin eruptions using artificial UV light, carefully controlled and extremely effective for significant skin disease

Question 6

PUVA

Answer 6

Combination of psoralen and UVA therapy used to treat skin conditions, with the psoralen making it more sensitive to the UV allowing for deep penetrating work on the skin

Question 7

Intralesional injections

Answer 7

A direct placement of medication into a lesion of skin with a fine needle, often a dilute solution of triamicalone (kenalog)

Question 8

Dysplastic nevi

Answer 8

Nevi that appear physically or histologically as high potential for conversion to melanoma

Question 9

Actinic keratosis, if left untreated, can degranulate and turn into…

Answer 9

….squamous cell carcinoma

Question 10

Langer lines

Answer 10

Lines of skin folds that naturally occur that plastic surgeons try to cut and suture following allowing for minimal scarring

Question 11

Epinephrine assists lidocaine in these 2 ways

Answer 11

1) increases the length of effect

2) decreases bleeding

Question 12

The key to painless lidocaine injections is….

Answer 12

….slow speed of injection with a small diameter needle

Question 13

Trichloroacetic acid mech of action (derm procedures)

Answer 13

Used to treat warts or actinic keratosis or other lesions through activating the immune response to be drawn to the area, often in conjunction with duct tape therapy

Question 14

Podophyllin (derm procedures)

Answer 14

Liquid therapy used to treat genital warts and molluscum alongside petrolium jelly around the lesion

Question 15

Cantharidin mech of action (derm procedures)

Answer 15

forms a blister under the wart, cutting off the blood supply, the blister may be painful and itch