Topical Anesthetics

Question 1

What is the dose of lidocaine when used alone?

Answer 1

not to exceed 15 sprays

Question 2

Why do we need to limit the amount of local anesthetic used?

Answer 2

Rapid circulatory uptake can occur&raquo_space; system toxicity

Question 3

Local anesthetic toxicity early stages: (3)

Answer 3

1. metallic taste in the mouth
2. light-headedness
3. tinnitus

Question 4

Local anesthetic toxicity later stages: (6)

Answer 4

1. muscle twitching
2. tremors
3. convulsions
4. respiratory depression
5. hypotension
6. cardiovascular collapse

Question 5

Lidocaine concentrations available:

Answer 5

2%, 4%, 10%