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CRDTS MOCK EXAM QUESTIONS WITH
COMPLETE SOLUTIONS!!
When a nerve is in its resting state, the - .....ANSWER
...✔✔ A. K+ is concentrated outside the cell
B. Cell membrane is positive on the outside of the cell
C. Na+ is concentrated outside the cell Correct
D. Cell membrane is more positive on the inside of the
cell
Which of the following maintains the resting potential of
nerve fiber? - .....ANSWER ...✔✔ A. The K+ pump
B. The Na+ pump Correct
C. The concentration gradient
D. The electrical impulse
Select the following anesthetic(s) available in the US that
is(are) formulated with epinephrine 1:200,000 -
.....ANSWER ...✔✔ A. Lidocaine
B. Mepivacaine
C. Prilocaine
D. Articaine
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E. Prilocaine and Articaine Correct
Which of the following anesthetics has the shortest
duration when administering a local anesthetic block? -
.....ANSWER ...✔✔ A. Lidocaine 1:100,000
B. Mepivacaine 1:20,000
C. Mepivacaine 3% Correct
D. Prilocaine 4%
Levonordefrin has how many mg/mL of vasoconstrictor?
- .....ANSWER ...✔✔ A. 0.05 mg/mL Correct
B. 0.01 mg/mL
C. 0.9 mg/mL
D. 0.005 mg/mL
How much epinephrine does a 1:200,000 dilution
contain compared with a 1:100,000 dilution -
.....ANSWER ...✔✔ A. Half Correct
B. Twice
C. One quarter
D. One forth
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What is the cardiac dose for epinephrine? - .....ANSWER
...✔✔ A. 0.2 mg
B. 0.04 mg Correct
C. 1.0 mg
D. 2.0 mg
How many cartridges could a cardiac patient safely
receive if administering a 1:200,000 epinephrine
dilution? - .....ANSWER ...✔✔ A. 1.1 cartridges
B. 4.4 cartridges Correct
C. 2.2 cartridges
D. 3.3 cartridges
What is the primary reason that catecholamines (epi)
are added to local anesthetic solutions? - .....ANSWER
...✔✔ A. Decrease the risk of toxicity Correct
B. Decrease the duration of action
C. Decrease the risk of postoperative pain
D. Decrease the risk of infection
Sodium bicarbonate is added to local anesthetic
solutions: - .....ANSWER ...✔✔ A. Only when a
vasoconstrictor is added
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B. To prevent the oxidation of the amide
C. To make the solution isotonic
D. To help increase the pH of the anesthetic. Correct
How many mg of epinephrine are in one cartridge of a
1:100,000 dilution? - .....ANSWER ...✔✔ A. 0.009 mg
B. 0.01 mg
C. 0.018 mg Correct
D. 0.02 mg
During the inferior alveolar block the patient feels a
sudden electrical shock. This is due to: - .....ANSWER
...✔✔ A. The needle touching the inferior alveolar
nerve
B. The needle touching the lingual nerve Correct
C. The needle touching the buccal nerve
D. The needle touching the pterygomandibular raphe
Supraperiosteal injections are less successful on the
mandible because of the: - .....ANSWER ...✔✔ A.
Porous bone of the mandible
B. Density of the bone of the mandible Correct
C. pH of the tissue on the mandible
CRDTS MOCK EXAM QUESTIONS WITH
COMPLETE SOLUTIONS!!
When a nerve is in its resting state, the - .....ANSWER
...✔✔ A. K+ is concentrated outside the cell
B. Cell membrane is positive on the outside of the cell
C. Na+ is concentrated outside the cell Correct
D. Cell membrane is more positive on the inside of the
cell
Which of the following maintains the resting potential of
nerve fiber? - .....ANSWER ...✔✔ A. The K+ pump
B. The Na+ pump Correct
C. The concentration gradient
D. The electrical impulse
Select the following anesthetic(s) available in the US that
is(are) formulated with epinephrine 1:200,000 -
.....ANSWER ...✔✔ A. Lidocaine
B. Mepivacaine
C. Prilocaine
D. Articaine
,2|Page
E. Prilocaine and Articaine Correct
Which of the following anesthetics has the shortest
duration when administering a local anesthetic block? -
.....ANSWER ...✔✔ A. Lidocaine 1:100,000
B. Mepivacaine 1:20,000
C. Mepivacaine 3% Correct
D. Prilocaine 4%
Levonordefrin has how many mg/mL of vasoconstrictor?
- .....ANSWER ...✔✔ A. 0.05 mg/mL Correct
B. 0.01 mg/mL
C. 0.9 mg/mL
D. 0.005 mg/mL
How much epinephrine does a 1:200,000 dilution
contain compared with a 1:100,000 dilution -
.....ANSWER ...✔✔ A. Half Correct
B. Twice
C. One quarter
D. One forth
,3|Page
What is the cardiac dose for epinephrine? - .....ANSWER
...✔✔ A. 0.2 mg
B. 0.04 mg Correct
C. 1.0 mg
D. 2.0 mg
How many cartridges could a cardiac patient safely
receive if administering a 1:200,000 epinephrine
dilution? - .....ANSWER ...✔✔ A. 1.1 cartridges
B. 4.4 cartridges Correct
C. 2.2 cartridges
D. 3.3 cartridges
What is the primary reason that catecholamines (epi)
are added to local anesthetic solutions? - .....ANSWER
...✔✔ A. Decrease the risk of toxicity Correct
B. Decrease the duration of action
C. Decrease the risk of postoperative pain
D. Decrease the risk of infection
Sodium bicarbonate is added to local anesthetic
solutions: - .....ANSWER ...✔✔ A. Only when a
vasoconstrictor is added
, 4|Page
B. To prevent the oxidation of the amide
C. To make the solution isotonic
D. To help increase the pH of the anesthetic. Correct
How many mg of epinephrine are in one cartridge of a
1:100,000 dilution? - .....ANSWER ...✔✔ A. 0.009 mg
B. 0.01 mg
C. 0.018 mg Correct
D. 0.02 mg
During the inferior alveolar block the patient feels a
sudden electrical shock. This is due to: - .....ANSWER
...✔✔ A. The needle touching the inferior alveolar
nerve
B. The needle touching the lingual nerve Correct
C. The needle touching the buccal nerve
D. The needle touching the pterygomandibular raphe
Supraperiosteal injections are less successful on the
mandible because of the: - .....ANSWER ...✔✔ A.
Porous bone of the mandible
B. Density of the bone of the mandible Correct
C. pH of the tissue on the mandible
