31 - 209 - LASER SKIN RESURFACING: COSMETIC AND MEDICAL APPLICATIONS Flashcards
Most severe complications associated with ablative cutaneous laser resurfacing
a. Reactivation of HSV
b. Hypertrophic scarring
c. Ectropion
d. B and C
D
Gold standard in ablative LSR
a. CO2 laser
b. Er:YSGG
c. Excimer
A
Absolute contraindication for LSR
a. Mild erythema
b. Edema
c. Active skin infection
d. Skin phototype VI
C
Ideal patient for LSR
a. Enlarged pores
b. Dark complexion Skin phototype V-VI
c. Fair complexion Skin phototype I or II
d. Photodamaged or scarred facial skin
B, D
Average time for reepithelialization for single pass CO2
a. 2.5 days
b. 10.5 days
c. 5 days
d. 5.5 days
D
Wavelength of CO2
10,600 nm
Wavelength of Er:YAG
2940 nm
Examples of Ablative pulsed/scanned lasers
Nonablative lasers
Erbium fiber wavelength
1550 nm
Thulium wavelength
1927 nm
ideal patient for cutaneous laser resurfacing
fair complexion (Fitzpatrick skin phototype I or II) with photodamaged or scarred facial skin
Expected reactions of laser
■ Erythema
■ Edema
■ Pruritus
MILD Side Effects and Complications of Ablative and Nonablative Laser Skin Resurfacing
■ Prolonged erythema
■ Milia
■ Acne
■ Allergic or irritant contact dermatitis
MODERATE Side Effects and Complications of Ablative and Nonablative Laser Skin Resurfacing
■ Infection (bacterial. viral, fungal)
■ Transient hyperpigmentation
SEVERE Side Effects and Complications of Ablative and Nonablative Laser Skin Resurfacing
■ Permanent hypopigmentation
■ Hypertrophic scarring
■ Ectropion
what areas have decreased pilosebaceous units?
eyelid, neck and chest
Excessive thermal injury in these areas can result in subsequent hypertrophic scarring.
