LOCAL ANESTHESIA MOCK BOARD
EXAM
When a nerve is in its resting state, the: - Correct Answers -Na+ is concentrated outside
the cell
Which of the following maintains the resting potential of a nerve fiber? - Correct
Answers -The Na+ pump
Select the following anesthetic(s) available in the US that is(are) formulated with
epinephrine 1:200,000
A. Lidocaine
B. Mepivacaine
C. Prilocaine
D. Articaine
E. C and D - Correct Answers -C and D
Which of the following anesthetics has the shortest duration when administering a local
anesthetic block? - Correct Answers -Mepivacaine 3%
Levonordefrin has how many mg/mL of vasoconstrictor? - Correct Answers -0.05
mg/mL
How much epinephrine does a 1:200,000 dilution contain compared with a 1:100,000
dilution? - Correct Answers -Half
What is the cardiac dose for epinephrine? - Correct Answers -0.04 mg
How many cartridges could a patient from the answer in question #7 safely receive if
administering a 1:200,000 epinephrine dilution? - Correct Answers -4.4 cartridges
What is the primary reason that catecholamines are added to local anesthetic solutions?
- Correct Answers -Decrease the risk of toxicity
Sodium bicarbonate is added to local anesthetic solutions: - Correct Answers -To help
increase the pH of the anesthetic.
, How many mg of epinephrine are in one cartridge of a 1:100,000 dilution? - Correct
Answers -0.018 mg
During the inferior alveolar block the patient feels a sudden electrical shock. This is due
to: - Correct Answers -the needle touching the lingual nerve.
Supraperiosteal injections are less successful on the mandible because of the - Correct
Answers -density of the bone of the mandible.
Which of the following vasoconstrictor dilutions provides the greatest hemostasis? -
Correct Answers -1:50,000 epinephrine
After the administration of a local anesthetic, what causes a droopy eyelid? - Correct
Answers -Depositing the solution in the parotid gland.
Which anesthetic is primarily metabolized in the blood? - Correct Answers -Articaine
What is the recommended needle gauge for an inferior alveolar block? - Correct
Answers -25 gauge
Esters are metabolized by - Correct Answers -plasma
Amides are metabolized by - Correct Answers -liver
The dental hygienist successfully administers an inferior alveolar block, but the patient
does not get numb. What is the possible reason why the patient does not get numb? -
Correct Answers -Solution deposited inferior to the mandibular foramen
Prolonged parasthesia of the anterior part of the tongue is caused by which nerve being
traumatized? - Correct Answers -Lingual nerve
What is the main reason anesthesia fails to occur near an abscessed tooth? - Correct
Answers -Infection causes a decrease in the pH of the tissue
Which of the following local anesthetics will provide the longest duration of action
following a nerve block when a vasoconstrictor is absolutely contraindicated? - Correct
Answers -4% prilocaine, pain
Which of the following nerves when anesthetized provides soft tissue anesthesia of the
lower lip and chin? - Correct Answers -mental nerve
At the first indication of a hematoma, the clinician should: - Correct Answers -apple
pressure to the area
EXAM
When a nerve is in its resting state, the: - Correct Answers -Na+ is concentrated outside
the cell
Which of the following maintains the resting potential of a nerve fiber? - Correct
Answers -The Na+ pump
Select the following anesthetic(s) available in the US that is(are) formulated with
epinephrine 1:200,000
A. Lidocaine
B. Mepivacaine
C. Prilocaine
D. Articaine
E. C and D - Correct Answers -C and D
Which of the following anesthetics has the shortest duration when administering a local
anesthetic block? - Correct Answers -Mepivacaine 3%
Levonordefrin has how many mg/mL of vasoconstrictor? - Correct Answers -0.05
mg/mL
How much epinephrine does a 1:200,000 dilution contain compared with a 1:100,000
dilution? - Correct Answers -Half
What is the cardiac dose for epinephrine? - Correct Answers -0.04 mg
How many cartridges could a patient from the answer in question #7 safely receive if
administering a 1:200,000 epinephrine dilution? - Correct Answers -4.4 cartridges
What is the primary reason that catecholamines are added to local anesthetic solutions?
- Correct Answers -Decrease the risk of toxicity
Sodium bicarbonate is added to local anesthetic solutions: - Correct Answers -To help
increase the pH of the anesthetic.
, How many mg of epinephrine are in one cartridge of a 1:100,000 dilution? - Correct
Answers -0.018 mg
During the inferior alveolar block the patient feels a sudden electrical shock. This is due
to: - Correct Answers -the needle touching the lingual nerve.
Supraperiosteal injections are less successful on the mandible because of the - Correct
Answers -density of the bone of the mandible.
Which of the following vasoconstrictor dilutions provides the greatest hemostasis? -
Correct Answers -1:50,000 epinephrine
After the administration of a local anesthetic, what causes a droopy eyelid? - Correct
Answers -Depositing the solution in the parotid gland.
Which anesthetic is primarily metabolized in the blood? - Correct Answers -Articaine
What is the recommended needle gauge for an inferior alveolar block? - Correct
Answers -25 gauge
Esters are metabolized by - Correct Answers -plasma
Amides are metabolized by - Correct Answers -liver
The dental hygienist successfully administers an inferior alveolar block, but the patient
does not get numb. What is the possible reason why the patient does not get numb? -
Correct Answers -Solution deposited inferior to the mandibular foramen
Prolonged parasthesia of the anterior part of the tongue is caused by which nerve being
traumatized? - Correct Answers -Lingual nerve
What is the main reason anesthesia fails to occur near an abscessed tooth? - Correct
Answers -Infection causes a decrease in the pH of the tissue
Which of the following local anesthetics will provide the longest duration of action
following a nerve block when a vasoconstrictor is absolutely contraindicated? - Correct
Answers -4% prilocaine, pain
Which of the following nerves when anesthetized provides soft tissue anesthesia of the
lower lip and chin? - Correct Answers -mental nerve
At the first indication of a hematoma, the clinician should: - Correct Answers -apple
pressure to the area
