Local Anesthesia CDCA Board Review Exam
Questions With Correct Answers
What is the preservative of anesthetic solution? - answer✔✔Sodium Bisulfite
If the patient experiences dehydration of the cornea following treatment, what nerve was
involved? - answer✔✔Infraorbital
If a patient has atypical plasma cholinesterase, what drug will they have a problem metabolizing?
- answer✔✔Esters
The patient is experiencing difficulty breathing and goes unconscious- what should you give
them? - answer✔✔Oxygen
When is the most important time to aspirate during injections? - answer✔✔before depositing LA
What nerve has been anesthetized if the anterior 2/3rds of the tongue is numb? -
answer✔✔Lingual (usually via the IA)
If you inject 1 ml per minute, what is the expected outcome? - answer✔✔Successful, atraumatic
injection
If a patient received two cartridges of anesthetic, how much volume did they recieve? -
answer✔✔3.6 ml
The patient experiences burning during injection- what is the probable cause? -
answer✔✔Depositing LA too quickly
Patient has a significant infection. What caused the difficulty of the patient achieving anesthesia?
- answer✔✔pH balance of infection creates acidic environment, LA cannot bind to nerve
receptors
What probably caused a lesion on the lower lip that was present the following day of a local
anesthia injection? - answer✔✔Self-injury
What is the volume of a single cartridge of local anesthetic? - answer✔✔1.8 ml
What is the purpose of sodium bisulfite being added to anesthetic solution? -
answer✔✔preservative for vasoconstrictor