CANS Pharmacology & Medications in Aesthetics

Question 1

What is the primary mechanism of action of botulinum toxin type A in aesthetic treatments?

Accepted Answer

Blocks acetylcholine release at the neuromuscular junction

Answer

Stimulates acetylcholine release at the neuromuscular junction

Answer

Inhibits norepinephrine uptake at nerve terminals

Answer

Promotes collagen synthesis in the dermis

Question 2

Which enzyme is the antidote used to dissolve hyaluronic acid filler complications such as vascular occlusion?

Accepted Answer

Hyaluronidase

Answer

Collagenase

Answer

Elastase

Answer

Lipase

Question 3

The maximum recommended dose of lidocaine WITH epinephrine for local anesthesia in aesthetic procedures is approximately:

Accepted Answer

7 mg/kg

Answer

3 mg/kg

Answer

5 mg/kg

Answer

10 mg/kg

Question 4

Which topical depigmenting agent is considered the FDA-recognized gold standard for treating post-inflammatory hyperpigmentation?

Accepted Answer

Hydroquinone 4%

Answer

Hydrocortisone 1%

Answer

Tretinoin 0.025%

Answer

Kojic acid 2%

Question 5

EMLA cream provides topical anesthesia through a eutectic mixture of which two local anesthetics?

Accepted Answer

Lidocaine and prilocaine

Answer

Lidocaine and bupivacaine

Answer

Prilocaine and mepivacaine

Answer

Benzocaine and tetracaine

Question 6

Tretinoin (retinoic acid) exerts its primary aesthetic benefits by:

Accepted Answer

Binding nuclear retinoic acid receptors to promote keratinocyte turnover and collagen synthesis

Answer

Inhibiting melanin synthesis by directly blocking tyrosinase

Answer

Reducing sebum production by permanently shrinking sebaceous glands

Answer

Acting as a free radical scavenger to neutralize UV-induced oxidative damage

Question 7

Epinephrine is added to local anesthetic solutions in aesthetic procedures primarily to:

Accepted Answer

Prolong anesthesia duration and reduce systemic absorption via vasoconstriction

Answer

Reduce the risk of post-procedure infection

Answer

Enhance the intrinsic potency of the anesthetic molecule

Answer

Prevent post-procedure edema and swelling