APEX ANESTHESIA MOCK EXAM ACTUAL EXAM 250 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+

APEX ANESTHESIA MOCK EXAM 2023-2024 ACTUAL

EXAM 250 QUESTIONS AND CORRECT DETAILED

ANSWERS WITH RATIONALES (VERIFIED ANSWERS)

|ALREADY GRADED A+

What is the recommended needle gauge for an inferior alveolar block?

A. 25 gauge

B. 27 gauge

C. 30 gauge

D. Any gauge is fine - ANSWER- A. 25 gauge

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?

A. Solution deposited superior to the mandibular foramen

B. Solution deposited inferior to the mandibular foramen

C. Solution deposited too rapidly

D. Solution deposited too slowly - ANSWER- B. Solution deposited inferior to the

mandibular foramen

Prolonged paresthesia of the anterior part of the tongue is caused by which nerve

being traumatized?

A. Inferior alveolar nerve

B. Mental nerve

C. Incisive nerve

D. Lingual nerve - ANSWER- D. Lingual nerve

What is the main reason anesthesia fails to occur near an abscessed tooth?

A. Infection causes an increase in the tissue pH

B. Infection causes a decrease in the pH of the tissue

C. Infection causes a neutral pH

D. None of the above; infection has no relationship to the success of anesthesia -

ANSWER- B. 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?

A. 3% mepivacaine

B. 0.5% bupivacaine

C. 2% lidocaine

D. 4% prilocaine, plain - ANSWER- D. 4% prilocaine, plain

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 - ANSWER- 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 - ANSWER- 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 - ANSWER- 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 - ANSWER- D. Na+ efflux

The coronoid notch is a landmark for which nerve block?

A. Buccal block

B. Mental block

C. Inferior alveolar block

D. Infraorbital block - ANSWER- 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 - ANSWER- `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 - ANSWER- 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 - ANSWER- 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 - ANSWER- B. CNS stimulation

What part of the syringe indicates it is an aspirating syringe?

A. Harpoon