LOCAL ANESTHESIA CDCA EXAM
CERTIFICATION EVALUATION EXAMS 2026
COMPLETE QUESTIONS AND ANSWERS
GUARANTEED TO PASS
◉ What is the most preferred method to re-cap a needle? Answer:
one handed scoop technique
◉ What is psychogenic pain? Answer: pain with no organic cause
◉ If a patient is having an allergic reaction, what do you do? Answer:
give patient epinephrine for severe allergic reaction, give patient
benadryl for mild allergic reaction
◉ What are the two routes of delivery for local anesthetic drugs?
Answer: topical and submucosal injection
◉ Of the two major groups of local anesthetics, which one is more
likely to cause an allergic reaction? Answer: esthers
◉ What compound found in esthers causes allergic reactions?
Answer: para-aminobenzoic acid (PABA)
,◉ What component of the local anesthetic molecule determines how
lipid soluble it is? Answer: lipophilic aromatic ring
◉ What component of the local anesthetic molecule determines how
it is metabolized and what group it is? Answer: intermediate
hydrocarbon chain
◉ What component of the local anesthetic molecule determines how
water soluble it is? Answer: hydrophilic amine group
◉ During manufacturing, local anesthetics are formulated with what
compound to render them water soluble? Answer: hydrochloric salt
◉ Why is sodium bicarbonate added to local anesthetic solutions?
Answer: to increase the pH of the anesthetic (buffer)
◉ Why is sodium bisulfate added to local anesthetic solutions?
Answer: to increase the shelf life (preservative)
◉ Why is sodium chloride added to local anesthetic solutions?
Answer: makes it isotonic
◉ What is a drawback to adding sodium bisulfate to local anesthetic
solutions? Answer: it decreases the pH from 6.5 to 3.0-5.5
, ◉ Where is Na+ concentrated during the resting membrane
potential state? Answer: outside the cell
◉ What maintains the resting potential of a nerve fiber? Answer:
sodium potassium pump
◉ What is another term for resting membrane potential (RMP)?
Answer: polarization
◉ What are the benefits of adding a
vasoconstrictor/sympathomimetic agents into local anesthetic
solutions? Answer: decrease in blood flow, increased duration,
reduces toxicity, and promotes hemostasis
◉ What is an undesirable effect of adding a
vasoconstrictor/sympathomimetic agents into local anesthetic
solutions? Answer: increased rate and force of heart contractions
(fight or flight)
◉ What are the nerves that conduct signals away from the brain or
spinal cord called? Answer: efferent nerves
◉ What are the nerves that conduct signals towards to the brain or
spinal cord called? Answer: afferent nerves
CERTIFICATION EVALUATION EXAMS 2026
COMPLETE QUESTIONS AND ANSWERS
GUARANTEED TO PASS
◉ What is the most preferred method to re-cap a needle? Answer:
one handed scoop technique
◉ What is psychogenic pain? Answer: pain with no organic cause
◉ If a patient is having an allergic reaction, what do you do? Answer:
give patient epinephrine for severe allergic reaction, give patient
benadryl for mild allergic reaction
◉ What are the two routes of delivery for local anesthetic drugs?
Answer: topical and submucosal injection
◉ Of the two major groups of local anesthetics, which one is more
likely to cause an allergic reaction? Answer: esthers
◉ What compound found in esthers causes allergic reactions?
Answer: para-aminobenzoic acid (PABA)
,◉ What component of the local anesthetic molecule determines how
lipid soluble it is? Answer: lipophilic aromatic ring
◉ What component of the local anesthetic molecule determines how
it is metabolized and what group it is? Answer: intermediate
hydrocarbon chain
◉ What component of the local anesthetic molecule determines how
water soluble it is? Answer: hydrophilic amine group
◉ During manufacturing, local anesthetics are formulated with what
compound to render them water soluble? Answer: hydrochloric salt
◉ Why is sodium bicarbonate added to local anesthetic solutions?
Answer: to increase the pH of the anesthetic (buffer)
◉ Why is sodium bisulfate added to local anesthetic solutions?
Answer: to increase the shelf life (preservative)
◉ Why is sodium chloride added to local anesthetic solutions?
Answer: makes it isotonic
◉ What is a drawback to adding sodium bisulfate to local anesthetic
solutions? Answer: it decreases the pH from 6.5 to 3.0-5.5
, ◉ Where is Na+ concentrated during the resting membrane
potential state? Answer: outside the cell
◉ What maintains the resting potential of a nerve fiber? Answer:
sodium potassium pump
◉ What is another term for resting membrane potential (RMP)?
Answer: polarization
◉ What are the benefits of adding a
vasoconstrictor/sympathomimetic agents into local anesthetic
solutions? Answer: decrease in blood flow, increased duration,
reduces toxicity, and promotes hemostasis
◉ What is an undesirable effect of adding a
vasoconstrictor/sympathomimetic agents into local anesthetic
solutions? Answer: increased rate and force of heart contractions
(fight or flight)
◉ What are the nerves that conduct signals away from the brain or
spinal cord called? Answer: efferent nerves
◉ What are the nerves that conduct signals towards to the brain or
spinal cord called? Answer: afferent nerves
