Laser settings
What laser should we use?
Laser prep and aftercare
Hair
Misc
1
200 PTS
What is pulse width?
Duration of energy delivery
1
300 PTS
What is the best laser for superficial pigmented lesions?
What is the best laser for deep pigmented lesions?
Superficial: IPL
Deep: Q switched Ruby or YAG (Nd:YAG)
1
300 PTS
Name 3 RELATIVE contraindications for full face laser resurfacing
1) Keloid history
2) Prior deep chemical peel
3) Hx cold sores
4) (Controversial) Fitzpatrick 5/6 who have undergone prior region resurfacing
1
200 PTS
What are the three phases of hair growth? (provide a brief definition for each)
ANAGEN: active growth
CATAGEN: transition phase
TELOGEN: resting phase
1
200 PTS
What are the male pattern and female pattern baldness classification systems?
Male pattern: Norwood
Female Pattern: Ludwig
2
200 PTS
What is thermal relaxation time?
The time it takes to dissipate 51% of heat absorbed in a target
2
400 PTS
What wavelength is the best for vascular lesions?
1064nm - will not cause purpura
2
300 PTS
Name 3 ABSOLUTE contraindications to full face laser resurfacing
1) Accutane use within 1 year
2) Skin grafts
3) Active infection
2
200 PTS
Anteriormost point of a new hairline should be positioned where?
7.5-9cm above the glabella
2
200 PTS
What are the three native chromophores in human skin?
For an extra 200-- where are the located in the skin?
Hemoglobin: at or below DE junction
Melanin: at or above DE junction
Water: in dermis and epidermis
3
300 PTS
What is the ideal relationship between pulse width and thermal relaxation time?
Ideal pulse width is HALF the thermal relaxation time
3
200 PTS per laser
Name a laser that can be used for hemangioma.
Argon and YAG arrest growth and induce involution
Flashlamp can be used for superficial lesions
KTP can be used intralesionally
3
200 PTS
What is a type of nonablative laser that can be used in Fitzpatrick 5/6 skin types for acne scarring?
Erbium doped laser
3
100-300 PTS (depending on level of detail of your answer)
What is the MOA of finasteride 5a
5a reductase inhibitor that promotes conversion of follicles to anagen phase and lowers DHT
3
100 points
What chromophore do Erbium and CO2 lasers target?
Water
4
500 PTS that you can take from someone else
What are the following wavelength ranges:
UV
Visible light
Near IR
IR
UV: 200-400 nm
Visible light: 400-750 nm
Near IR: 750-1300 nm
IR: 1300-20,000 nm
4
300 PTS
What is the safest ablative laser for Fitzpatrick 5/6 patients?
NdYAG/Qswitched YAG
4
400 PTS
What infection do you provide prophylaxis for after laser resurfacing? What is the regimen (medication, dose, duration)?
HSV outbreak
IStart Valcyclovir for 1 week if no hx HSV; 2-3 before and 10-14 days after if hx of HSV
4
300 PTS
What is the theory of donor dominance?
In androgenic alopecia, donor dominance is the basis by which hair transplantation surgery works.
In essence, hair in androgen insensitive areas keep their characteristics when transplanted in androgen sensitive areas
4
200 PTS
What are the three important characteristics of laser light?
1) Coherent
2) Monochromatic
3) Collimated
5
200 PTS
The longer the wavelength of the laser, the ______ the absorption
The longer the wavelength of the laser, the deeper the absorption
5
200 PTS per answer
For tattoo removal...
Name ideal lasers for Black/Blue/Green pigment (3)
Name ideal lasert for Red/Yellow/Orange/Purple (1)
Black/Blue/Green
- Q switched ruby (694 nm)
- Q switched alexandrite (755 nm)
- NdYAG (1064 nm)
Red/Yellow/Orange/Purple
- Frequency doubled Q switched NdYAG (532 nm)
5
500 PTS
Name 3 medications that may be prescribed before a laser treatment and what they are for.
1) Tretinoin: increases epidermal proliferation
2) Hydroquinone: helps prevent hyperpigmentation
3) Valtrex: HSV ppx
5
100 PTS per answer
Name up to 4 types of alopecia that are amenable to surgical hair restoration
Androgenic
Cicatricial
Traumatic
Traction
5
100 PTS each
Name up to 4 alopecias that are NOT amenable to surgical hair restoration
Diffuse female pattern baldness
Nondonor dominant alopecia
Alopecia areata
Active scarring alopecia