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LOCAL ANAESTHESIA CDCA FINAL EXAM QUESTION
BANK 2023/2024 | CONTAINS 200 ACCURATE
QUESTIONS WITH DETAILED ANSWERS EXACT EXAM
QUESTIONS|4 DIFFERENT VERSIONS| ALREADY GRADED
A+| PASS GUARANTEED
Which of the following nerves when anesthetized provides soft tissue anesthesia of the lower lip
and chin?
A. Mental nerve
B. Incisive nerve
C. Inferior alveolar nerve
D. Buccal nerve
A. Mental nerve
At the first indication of a hematoma, the clinician should:
A. Apply ice to the area
B. Apply heat to the area
C. Apply pressure to the area
D. Apply ice for 10 minutes followed by heat for 10 minutes
C. Apply pressure to the area
What is the best explanation as to why a patient has a lesion on his or her lip the day after
receiving an inferior alveolar block?
A. Self-mutilation
B. Allergic to the anesthetic
C. Trauma induced during dental hygiene instrumentation
D. Prolonged use of topical anesthetic
A. Self-mutilation
Local anesthetics work by penetrating the nerve to inhibit:
A. Cl+ influx
B. Na+ influx
C. K- efflux
D. Na+ efflux
E. K- influx
B. Na+ influx
The coronoid notch is a landmark for which nerve block?
A. Buccal block
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B. Mental block
C. Inferior alveolar block
D. Infraorbital block
C. Inferior alveolar block
When energy for conduction is derived from the nerve cell membrane itself and is no longer
dependent on the stimulus for continuance, the conduction is considered to be:
A. Below the minimal threshold level
B. Above the minimal threshold level
C. Self-propagating
D. In the absolute refractory period
`C. Self-propagating
Which characteristic enhances the onset and effectiveness of local anesthetics?
A. High lipid solubility
B. High pKa
C. Low pH
D. High concentration of cation molecules
A. High lipid solubility
What is tachyphylaxis?
A. A term used to describe the anesthetic's inability to reach the nerve membrane because of
anatomical barriers
B. Reinjection of anesthetic before the mantle fibers have fully recovered
C. Increased tolerance to a drug that is administered repeatedly
D. A term used to describe only partial anesthesia
C. Increased tolerance to a drug that is administered repeatedly
Signs and symptoms of a vasoconstrictor overdose are manifested as:
A. CNS depression
B. CNS stimulation
C. Cardiovascular depression
D. Respiratory depression
B. CNS stimulation
What part of the syringe indicates it is an aspirating syringe?
A. Harpoon
B. Syringe adaptor
C. Thumb ring
D. Piston
A. Harpoon
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A barbed needle causes pain upon:
A. Insertion
B. Withdrawal
C. Deposition of anesthetic
D. Aspiration
B. Withdrawal
The dental hygienist administers 3 cartridges of articaine. How many mg of local anesthetic were
administered?
A. 200 mg
B. 162 mg
C. 216 mg
D. 172 mg
Articaine is 4% solution so 40x1.8= 72 mg in each cart. 72 x 3 carts used= 216
C. 216 mg
If the dental hygienist administered 105 mg of bupivacaine to a 150-pound patient, how many
cartridges were administered?
A. 11.6 cartridges
B. 10 cartridges
C. 10.5 cartridges
D. 12 cartridges
There is 9mg of Bupivacaine in each cart. (5 x 1.8=9)
If the DH administered 105 mg (105 /9 =11.6 =11.6)
A. 11.6 cartridges
In the above question number #34, what occurred?
A. The dental hygienist administered the absolute maximum dose.
B. The dental hygienist administered an overdose.
C. The dental hygienist safely administered 0.6 more mg of anesthetic.
D. The dental hygienist may administer an additional cartridge.
The patient weighed 150 /2.2= 68 would be the MRD (68/9 would be 7.5 carts for this patient as
MRD) and this patient was administered 105mg so...
B. The dental hygienist administered an overdose.
While administering the inferior alveolar local anesthetic block, the clinician contacts bone at a
depth of 10 mm on an adult patient. What should the clinician do?
A. Aspirate correctly and then deposit anesthetic agent at the site
B. Withdraw the needle almost completely and redirect the syringe barrel more anterior
3
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C. Withdraw the needle partially or completely and redirect the syringe barrel more posterior
D. Withdraw the needle partially and redirect the syringe barrel more perpendicular to the
occlusal plane
B. Withdraw the needle almost completely and redirect the syringe barrel more anterior
Which of the following local anesthetic blocks has the HIGHEST risk of hematoma for the
patient after administration?
A. Posterior superior alveolar block
B. Inferior alveolar block
C. Gow-Gates mandibular block
D. Mental or incisive blocks
A. Posterior superior alveolar block
Which of the following local anesthetic blocks can produce hematomas that cause severe
swelling and extraoral bruising as a result of nicking a blood vessel?
A. Posterior superior alveolar block
B. Inferior alveolar block
C. Gow-Gates mandibular block
D. Mental or incisive blocks
A. Posterior superior alveolar block
What are the nerves that conduct signals away from the brain or spinal cord called?
A. Neurotransmitters
B. Electrical synapses
C. Afferent nerves
D. Efferent nerves
D. Efferent nerve
Undesirable side effects of incorporating sympathomimetic agents such as epinephrine into local
anesthetic solutions include:
A. Increased force of air exchange
B. Increased bronchi dilation
C. Increased rate and force of heart contractions
D. All of the above
C. Increased rate and force of heart contractions
You have administered 2% lidocaine, 1:50,000 mg/ml epinephrine to a healthy patient. The
patient experiences restlessness and nausea and begins to hyperventilate. What should you
suspect?
A. Central nervous system stimulation
B. Overdose of epinephrine
C. Metabolic rise in blood sugar
D. Local anesthetic overdose
4
LOCAL ANAESTHESIA CDCA FINAL EXAM QUESTION
BANK 2023/2024 | CONTAINS 200 ACCURATE
QUESTIONS WITH DETAILED ANSWERS EXACT EXAM
QUESTIONS|4 DIFFERENT VERSIONS| ALREADY GRADED
A+| PASS GUARANTEED
Which of the following nerves when anesthetized provides soft tissue anesthesia of the lower lip
and chin?
A. Mental nerve
B. Incisive nerve
C. Inferior alveolar nerve
D. Buccal nerve
A. Mental nerve
At the first indication of a hematoma, the clinician should:
A. Apply ice to the area
B. Apply heat to the area
C. Apply pressure to the area
D. Apply ice for 10 minutes followed by heat for 10 minutes
C. Apply pressure to the area
What is the best explanation as to why a patient has a lesion on his or her lip the day after
receiving an inferior alveolar block?
A. Self-mutilation
B. Allergic to the anesthetic
C. Trauma induced during dental hygiene instrumentation
D. Prolonged use of topical anesthetic
A. Self-mutilation
Local anesthetics work by penetrating the nerve to inhibit:
A. Cl+ influx
B. Na+ influx
C. K- efflux
D. Na+ efflux
E. K- influx
B. Na+ influx
The coronoid notch is a landmark for which nerve block?
A. Buccal block
1
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B. Mental block
C. Inferior alveolar block
D. Infraorbital block
C. Inferior alveolar block
When energy for conduction is derived from the nerve cell membrane itself and is no longer
dependent on the stimulus for continuance, the conduction is considered to be:
A. Below the minimal threshold level
B. Above the minimal threshold level
C. Self-propagating
D. In the absolute refractory period
`C. Self-propagating
Which characteristic enhances the onset and effectiveness of local anesthetics?
A. High lipid solubility
B. High pKa
C. Low pH
D. High concentration of cation molecules
A. High lipid solubility
What is tachyphylaxis?
A. A term used to describe the anesthetic's inability to reach the nerve membrane because of
anatomical barriers
B. Reinjection of anesthetic before the mantle fibers have fully recovered
C. Increased tolerance to a drug that is administered repeatedly
D. A term used to describe only partial anesthesia
C. Increased tolerance to a drug that is administered repeatedly
Signs and symptoms of a vasoconstrictor overdose are manifested as:
A. CNS depression
B. CNS stimulation
C. Cardiovascular depression
D. Respiratory depression
B. CNS stimulation
What part of the syringe indicates it is an aspirating syringe?
A. Harpoon
B. Syringe adaptor
C. Thumb ring
D. Piston
A. Harpoon
2
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A barbed needle causes pain upon:
A. Insertion
B. Withdrawal
C. Deposition of anesthetic
D. Aspiration
B. Withdrawal
The dental hygienist administers 3 cartridges of articaine. How many mg of local anesthetic were
administered?
A. 200 mg
B. 162 mg
C. 216 mg
D. 172 mg
Articaine is 4% solution so 40x1.8= 72 mg in each cart. 72 x 3 carts used= 216
C. 216 mg
If the dental hygienist administered 105 mg of bupivacaine to a 150-pound patient, how many
cartridges were administered?
A. 11.6 cartridges
B. 10 cartridges
C. 10.5 cartridges
D. 12 cartridges
There is 9mg of Bupivacaine in each cart. (5 x 1.8=9)
If the DH administered 105 mg (105 /9 =11.6 =11.6)
A. 11.6 cartridges
In the above question number #34, what occurred?
A. The dental hygienist administered the absolute maximum dose.
B. The dental hygienist administered an overdose.
C. The dental hygienist safely administered 0.6 more mg of anesthetic.
D. The dental hygienist may administer an additional cartridge.
The patient weighed 150 /2.2= 68 would be the MRD (68/9 would be 7.5 carts for this patient as
MRD) and this patient was administered 105mg so...
B. The dental hygienist administered an overdose.
While administering the inferior alveolar local anesthetic block, the clinician contacts bone at a
depth of 10 mm on an adult patient. What should the clinician do?
A. Aspirate correctly and then deposit anesthetic agent at the site
B. Withdraw the needle almost completely and redirect the syringe barrel more anterior
3
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C. Withdraw the needle partially or completely and redirect the syringe barrel more posterior
D. Withdraw the needle partially and redirect the syringe barrel more perpendicular to the
occlusal plane
B. Withdraw the needle almost completely and redirect the syringe barrel more anterior
Which of the following local anesthetic blocks has the HIGHEST risk of hematoma for the
patient after administration?
A. Posterior superior alveolar block
B. Inferior alveolar block
C. Gow-Gates mandibular block
D. Mental or incisive blocks
A. Posterior superior alveolar block
Which of the following local anesthetic blocks can produce hematomas that cause severe
swelling and extraoral bruising as a result of nicking a blood vessel?
A. Posterior superior alveolar block
B. Inferior alveolar block
C. Gow-Gates mandibular block
D. Mental or incisive blocks
A. Posterior superior alveolar block
What are the nerves that conduct signals away from the brain or spinal cord called?
A. Neurotransmitters
B. Electrical synapses
C. Afferent nerves
D. Efferent nerves
D. Efferent nerve
Undesirable side effects of incorporating sympathomimetic agents such as epinephrine into local
anesthetic solutions include:
A. Increased force of air exchange
B. Increased bronchi dilation
C. Increased rate and force of heart contractions
D. All of the above
C. Increased rate and force of heart contractions
You have administered 2% lidocaine, 1:50,000 mg/ml epinephrine to a healthy patient. The
patient experiences restlessness and nausea and begins to hyperventilate. What should you
suspect?
A. Central nervous system stimulation
B. Overdose of epinephrine
C. Metabolic rise in blood sugar
D. Local anesthetic overdose
4
