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LOCAL ANESTHESIA MOCK BOARD (Answered) 59 Q&A. 100% Correct.
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LOCAL ANESTHESIA MOCK BOARD(Answered) 59 Q&A. 100% Correct.
When a nerve is in its resting state, the:
K+ is concentrated outside the cell.
Which of the following maintains the resting potential of a nerve fiber?
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
C and D
Which of the following anesthetics has the shortest duration when administering a local anesthetic
block?
Mepivacaine 3%
Levonordefrin has how many mg/mL of vasoconstrictor?
0.05 mg/mL
How much epinephrine does a 1:200,000 dilution contain compared with a 1:100,000 dilution?
Half
What is the cardiac dose for epinephrine?
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?
4.4 cartridges
What is the primary reason that catecholamines are added to local anesthetic solutions?
Decrease the risk of toxicity
Sodium bicarbonate is added to local anesthetic solutions:
only when a vasoconstrictor is added
, How many mg of epinephrine are in one cartridge of a 1:100,000 dilution?
0.018 mg
During the inferior alveolar block the patient feels a sudden electrical shock. This is due to:
the needle touching the lingual nerve.
Supraperiosteal injections are less successful on the mandible because of the
density of the bone of the mandible.
Which of the following vasoconstrictor dilutions provides the greatest hemostasis?
1:50,000 epinephrine
After the administration of a local anesthetic, what causes a droopy eyelid?
Depositing the solution in the parotid gland.
Which anesthetic is primarily metabolized in the blood?
Articaine
What is the recommended needle gauge for an inferior alveolar block?
25 gauge
Esters are metabolized by
plasma
Amides are metabolized by
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?
Solution deposited inferior to the mandibular foramen
Prolonged parasthesia of the anterior part of the tongue is caused by which nerve being traumatized?
Lingual nerve
What is the main reason anesthesia fails to occur near an abscessed tooth?
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?
4% prilocaine, pain
Which of the following nerves when anesthetized provides soft tissue anesthesia of the lower lip and
chin?
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