Quiz 2

Question 1

1. The two most common vasoconstrictors used in dentistry today are:
   a. Epinephrine and norepinephrine
   b. Epinephrine and Dopamine
   c. Epinephrine and Levonordephrine
   d. Epinephrine and Lidociane

Answer 1

c. Epinephrine and Levonordephrine

Question 2

2. A 1:50,000 concentration of vasoconstrictor has twice as much vasoconstrictor as 1:200,000.
   a. True
   b. False

Answer 2

b. False

Question 3

3. Factors to consider when selecting an appropriate local anesthetic agent for your patient will include:
4. length of time needed to complete a procedure
5. potential need for longer post-tx pain control
6. medical status of the patient
7. likelihood of self-mutilation due to numbness
8. need for hemostasis during the appointment

a. 2, 4, and 5 only
b. 1, 2, and 3 only
c. 2, 3, and 4 only
d. all of the above

Answer 3

3d. all of the above

Question 4

4. Determine the concentration of local anesthetic agent in a 2% solution of Lidocaine.

a. 5 mg/ml
b. 15 mg/ml
c. 20 mg/ml
d. 30 mg/ml

Answer 4

4c. 20 mg/ml

Question 5

5. Determine the concentration of vasoconstrictor in a 1:100,000 solution of Lidocaine.

a. 0.05 mg/ml
b. 0.20 mg/ml
c. 0.01 mg/ml
d. 0.005 mg/ml

Answer 5

5c. 0.01 mg/ml

Question 6

7. If two cartridges of 2% Lidocaine with 1:100,000 epi were administered to your patient, what quantity of Lidocaine was given?

a. 50 mg
b. 60 mg
c. 72 mg
d. 80 mg

Answer 6

7c. 72 mg

Question 7

CONTESTED Results for question 8.
8
0 / 1 point
If two cartridges of 2% Lidocaine with 1:100,000 were administered to your patient, what quantity of epinephrine was given?
a. 0.020 mg, Not Selected
Incorrect answer: b. 0.030 mg
Correct Answer:c. 72 mg
c. 72 mg, Not Selected
d. 80 mg, Not Selected

Question 8

9. If two cartridges of 3% Mepivacaine Plain were administered to your patient, what quantity of Mepivacaine was given?

a. 54 mg
b. 60 mg
c. 94 mg
d. 108 mg

Answer 8

9d. 108 mg

Question 9

6. Pt’s hx indicates that use of a vasoconstrictor is absolutely contraindicated. She is to receive SC/RP on her LR quad; you will be administering an IA nerve block injection. You anticipate that it will take approx. 1 hr to complete this procedure. Which of the following anesthetics would be the best choice for this patient?

a. 3% Mepivacaine
b. 0.5% Bupivacaine
c. 4% Prilocaine Plain
d. 4% Articaine
e. 2% Mepivacaine

Answer 9

6c. 4% Prilocaine Plain

Question 10

If four cartridges of 0.5% Bupivacaine (Marcaine) with 1:200,000 were administered to your patient, what quantity of Bupivacaine was given:

a. 20 mg
b. 36 mg
c. 72 mg
d. 90 mg

Answer 10

b. 36 mg

Question 11

11. How many cartridges of 3% Mepivacaine can a healthy 120 lb adult receive?

a. 4.5
b. 4
c. 5.5
d. 6.5

Answer 11

d. 6.5

Question 12

12. How many carpules of 2% Lidocaine with 1:100,000 epinephrine can a medically compromised cardiac patient safely receive, assuming that the use of a vasoconstrictor is not contraindicated?

a. 1 cartridge
b. 2 cartridges
c. 3 cartridges
4. cartridges

Answer 12

12. b. 2 cartridges

Question 13

13. A 73 y/o female, weighing 125 pounds, presents for dhy therapy on the UR quad.
    Hx: Bypass surgery 2 years ago and being monitored by her physician for HT which is presently controlled by medication.
    You administer: PSA, MSA, ASA, GP, and NP using 2% Lidocaine with 1:100,000 epinephrine. Can this anesthetic be safely used for this patient?

a. yes, as long as it’s used judiciously
b. yes, there are no problems at all with using any type of LA agent with this patient
c. no, this LA is an absolute contraindication
d. no, this patient should not receive any anesthetic agents at this time

Answer 13

13a. yes, as long as it’s used judiciously

Question 14

14. For the same patient (73y/o, 125lbs, bypass sx 2 yrs ago, monitored by MD, HT controlled w/ med) you plan on using 3 cartridges of 2% Lidocaine with 1:100,000 epinephrine. Does this amount exceed the MRD for this particular patient?
    a. no, 3 cartridges in acceptable
    b. yes, this amount exceeds the MRD

Answer 14

14.b. yes, this amount exceeds the MRD

Question 15

15. What is the maximum amount of vasoconstrictor that a healthy patient can receive in milligrams?

a. 0.2 mg
b. 0.04 mg
c. 0.4 mg
d. 0.02 mg

Answer 15

15a. 0.2 mg

Question 16

CONTESTED: 16
0 / 1 point
If you had a choice between using 2% Lidocaine with 1:50,000 or 1:100,000 epinephrine to control hemorrhage during a scaling and root planning appointment, which one would be the most appropriate to use?
Incorrect answer:a. 1:50,000
Correct Answer:b. 1:100,000
b. 1:100,000, Not Selected

Question 17

17. You need 15 minutes of pulpal anesthesia, should you choose 2% Mepivacaine or 3% Mepivacaine?
    a. 2% Mepivacaine
    b. 3% Mepivacaine

Answer 17

17b. 3% Mepivacaine

Question 18

18. Besides increased duration of action, what is the purpose of the vasoconstrictor in the anesthetic cartridge?

a. to increase the shelf life of the LA
b. to decrease toxicity by lowering systemic absorption
c. to control bleeding
d. a and b only
e. b and c only

Answer 18

18e. b and c only (decrease toxicity by lowing systemic absorption and to control bleeding)

Question 19

19. If epinephrine is accidentally injected intravenously, what are the signs?
    a. restlessness
    b. heart palpitations
    c. tremors
    d. dizziness
    e. respiratory difficulty
    f. all of the above

Answer 19

19f. all of the above

Question 20

20. Is 6 carpules of 3% Mepivacaine slowly given to a 150 lb, healthy patient appropriate?

a. yes
b. no

Answer 20

20a. yes

Question 21

21. Your patient weighs 185 pounds and you would like to administer 2% Lidocaine. Can your patient safely receive 9 carpules?
    a. yes
    b. no,

Answer 21

21a. yes

Question 22

22. A patient has an allergy to red wine and dried fruit. Which anesthetic is NOT contraindicated?

a. 3% Mepivacaine
b. 2% Lidocaine with epinephrine
c. 0.5% Bupivacaine

Answer 22

22a. 3% Mepivacaine