ABD Dermatologic Surgery 2

Question 1

During Mohs micrographic surgery, tissue margins are examined using which sectioning technique?

Accepted Answer

Horizontal en face frozen sections

Answer

Mohs uses horizontal en face frozen sections allowing evaluation of 100% of the surgical margin.

Question 2

What is the primary advantage of Mohs surgery over standard excision for high-risk facial tumors?

Accepted Answer

Complete margin control with maximal tissue conservation

Answer

Mohs offers the highest cure rate while sparing the maximum amount of healthy tissue.

Question 3

Which local anesthetic additive prolongs anesthesia duration and reduces bleeding?

Accepted Answer

Epinephrine

Answer

Epinephrine causes vasoconstriction, prolonging anesthesia and reducing intraoperative bleeding.

Question 4

What is the maximum safe dose of lidocaine with epinephrine per kilogram?

Accepted Answer

7 mg/kg

Answer

Lidocaine with epinephrine has a maximum safe dose of approximately 7 mg/kg.

Question 5

A patient reports metallic taste, perioral numbness, and tinnitus after injection. This suggests?

Accepted Answer

Local anesthetic systemic toxicity

Answer

Early CNS signs like perioral numbness and tinnitus indicate local anesthetic systemic toxicity.

American Board of Dermatology (ABD) Practice Test