⭕️49. Which of the following local anesthetics is preferable in patient with pseudocholinesterase deficiency?
Anonymous Quiz
4%
a) Procaine
78%
b) Ropivacaine
14%
c) Tetracaine
3%
d) Benzocaine
⭕️50. The primary mechanism of action of local anesthetics is:
Anonymous Quiz
5%
a) Activation of ligand-gated potassium channels
83%
b) Blockade of voltage-gated sodium channels
4%
c) Stimulation of voltage-gated N-type calcium channels
9%
d) Blockade the GABA-gated chloride channels
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⭕️51. Which of the following local anesthetics is more water-soluble?
Anonymous Quiz
8%
a) Tetracaine
2%
b) Etidocaine
84%
c) Procaine
6%
d) Bupivacaine
⭕️52. Indicate the local anesthetic, which is more lipid-soluble:
Anonymous Quiz
82%
a) Bupivacaine
11%
b) Lidocaine
6%
c) Mepivacaine
2%
d) Procaine
⭕️53. The more lipophylic drugs:
Anonymous Quiz
2%
a) Are more potent
1%
b) Have longer duration of action
0%
c) Bind more extensively to proteins
98%
d) All of the above
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⭕️54. Which of the following local anesthetics is an useful antiarrhythmic agent?
Anonymous Quiz
11%
a) Cocaine
66%
b) Lidocaine
15%
c) Bupivacaine
7%
d) Ropivacaine
⭕️55. Indicate the route of local anesthetic administration, which is associated with instillation within epidural or subarachnoid
spaces:
spaces:
Anonymous Quiz
5%
a) Topical anesthesia
2%
b) Infiltrative anesthesia
6%
c) Regional anesthesia
88%
d) Spinal anesthesia
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⭕️56. The choice of a local anesthetic for specific procedures is usually based on:
Anonymous Quiz
2%
a) The duration of action
0%
b) Water solubility
1%
c) Capability of rapid penetration through the skin or mucosa with limited tendency ....
97%
d) All of the above
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⭕️57. Which of the following local anesthetics is a short-acting drug?
Anonymous Quiz
80%
a) Procaine
10%
b) Tetracaine
8%
c) Bupivacaine
2%
d) Ropivacaine
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⭕️58. Indicate the local anesthetic, which is a long-acting agent:
Anonymous Quiz
7%
a) Lidocaine
89%
b) Bupivacaine
2%
c) Procaine
2%
d) Mepivacaine
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⭕️59. The anesthetic effect of the agents of short and intermediate duration of action can not be prolonged by adding:
Anonymous Quiz
6%
a) Epinephrine
6%
b) Norepinephrine
85%
c) Dopamine
3%
d) Phenylephrine
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⭕️60. A vasoconstrictor does not:
Anonymous Quiz
7%
a) Retard the removal of drug from the injection site
6%
b) Hence the chance of toxicity
9%
c) Decrease the blood level
78%
d) Reduce a local anesthetic uptake by the nerve
⭕️61. Vasoconstrictors are less effective in prolonging anesthetic properties of:
Anonymous Quiz
16%
a) Procaine
61%
b) Bupivacaine
13%
c) Lidocaine
10%
d) Mepivacaine
⭕️62. Which of the following local anesthetics is only used for surface or topical anesthesia?
Anonymous Quiz
83%
a) Cocaine
11%
b) Tetracaine
3%
c) Procaine
2%
d) Bupivacaine
⭕️63. Indicate the local anesthetic, which is mainly used for regional nerve block anesthesia:
Anonymous Quiz
9%
a) Dibucaine
62%
b) Bupivacaine
20%
c) Tetracaine
8%
d) Cocaine
⭕️64. Which of the following local anesthetics is used for infiltrative and regional anesthesia?
Anonymous Quiz
3%
a) Procaine
4%
b) Lidocaine
2%
c) Mepivacaine
90%
d) All of the above
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⭕️65. Indicate the local anesthetic, which is used for spinal anesthesia:
Anonymous Quiz
75%
a) Tetracaine
4%
b) Cocaine
8%
c) Dibucaine
13%
d) Bupivacaine
⭕️66. Which of the following local anesthetics is called a universal anesthetic?
Anonymous Quiz
6%
a) Procaine
13%
b) Ropivacaine
74%
c) Lidocaine
8%
d) Bupivacaine
⭕️67.Most serious toxic reaction to local anesthetics is:
Anonymous Quiz
2%
a) Seizures
1%
b) Cardiovascular collapse
0%
c) Respiratory failure
98%
d) All of the above
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⭕️68. Correct statements concerning cocaine include all of the following EXCEPT:
Anonymous Quiz
8%
a) Cocaine is often used for nose and throat procedures
11%
b) Limited use because of abuse potential
73%
c) Myocardial depression and peripheral vasodilatation
8%
d) Causes sympathetically mediated tachycardia and vasoconstriction
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⭕️69. Which of the following local anesthetics is more cardiotoxic?
Anonymous Quiz
6%
a) Procaine
85%
b) Bupivacaine
6%
c) Lidocaine
4%
d) Mepivacaine
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