LOCAL ANESTHESIA - CDCA BOARD Exam
Questions and Answers | 2026 Ultimate
Final Review | Grade A+
• What is the preservative of anesthetic solution? -✓✓Sodium Bisulfite
• If the patient experiences dehydration of the cornea following treatment, what
nerve was involved? -✓✓Infraorbital
• If a patient has atypical plasma cholinesterase, what drug will they have a
problem metabolizing? -✓✓Esters
• The patient is experiencing difficulty breathing and goes unconscious- what
should you give them? -✓✓Oxygen
• When is the most important time to aspirate during injections? -✓✓before
depositing LA
• What nerve has been anesthetized if the anterior 2/3rds of the tongue is numb? -
✓✓Lingual (usually via the IA)
• If you inject 1 ml per minute, what is the expected outcome? -✓✓Successful,
atraumatic injection
• If a patient received two cartridges of anesthetic, how much volume did they
recieve? -✓✓3.6 ml
, • The patient experiences burning during injection- what is the probable cause? -
✓✓Depositing LA too quickly
• Patient has a significant infection. What caused the difficulty of the patient
achieving anesthesia? -✓✓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? -✓✓Self-injury
• What is the volume of a single cartridge of local anesthetic? -✓✓1.8 ml
• What is the purpose of sodium bisulfite being added to anesthetic solution? -
✓✓preservative for vasoconstrictor
• What function does sodium chloride provide in anesthetic solution? -✓✓Tissue
compatibility
• Needle gauge- what lumen is the smallest? -✓✓30
• What tissue is topical anesthetic least effective on? -✓✓Keratinized
• What part of the syringe indicates it is an aspirating syringe? -✓✓Harpoon
• How should the needle usually be oriented? -✓✓Toward the bone
Questions and Answers | 2026 Ultimate
Final Review | Grade A+
• What is the preservative of anesthetic solution? -✓✓Sodium Bisulfite
• If the patient experiences dehydration of the cornea following treatment, what
nerve was involved? -✓✓Infraorbital
• If a patient has atypical plasma cholinesterase, what drug will they have a
problem metabolizing? -✓✓Esters
• The patient is experiencing difficulty breathing and goes unconscious- what
should you give them? -✓✓Oxygen
• When is the most important time to aspirate during injections? -✓✓before
depositing LA
• What nerve has been anesthetized if the anterior 2/3rds of the tongue is numb? -
✓✓Lingual (usually via the IA)
• If you inject 1 ml per minute, what is the expected outcome? -✓✓Successful,
atraumatic injection
• If a patient received two cartridges of anesthetic, how much volume did they
recieve? -✓✓3.6 ml
, • The patient experiences burning during injection- what is the probable cause? -
✓✓Depositing LA too quickly
• Patient has a significant infection. What caused the difficulty of the patient
achieving anesthesia? -✓✓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? -✓✓Self-injury
• What is the volume of a single cartridge of local anesthetic? -✓✓1.8 ml
• What is the purpose of sodium bisulfite being added to anesthetic solution? -
✓✓preservative for vasoconstrictor
• What function does sodium chloride provide in anesthetic solution? -✓✓Tissue
compatibility
• Needle gauge- what lumen is the smallest? -✓✓30
• What tissue is topical anesthetic least effective on? -✓✓Keratinized
• What part of the syringe indicates it is an aspirating syringe? -✓✓Harpoon
• How should the needle usually be oriented? -✓✓Toward the bone
