CDCA Local Anesthesia exam |
Questions and Answers Rated A+ |
2026/2027 Guide
what is the dendritic zone?
- Correct Answer - area of free sensory nerve endings
what is an axon?
- Correct Answer - single nerve fiber made up of neural cytoplasm
(axoplasm)
what are possible causes of a burning sensation during injection?
- Correct Answer - pH of the solution, temperature of solution, rate of
injection, or contamination
post-op trismus is usually due to what?
- Correct Answer - trauma or hemorrhage -- avoidable causes include
multiple injections to same site, excessive volume to site, or
contaminated solutions
what is the biggest risk/side effect to hematoma?
,- Correct Answer - inconvenience to patient and embarrassment to
clinician
what is the cause of post-op tissue sloughing?
- Correct Answer - too much vasoconstricor to small surface area, also
can be caused by over-use of topical in small area
psychogenic responses such as vaso-vagal syncope during /after
injection are related to what?
- Correct Answer - stress/pain of local anesthetic administration NOT
due to the action of the anesthetic
what are the signs of anesthetic toxicity?
- Correct Answer - vertigo, nausea, and muscle twitching
what are anesthetic alternatives if the patient is allergic to both amides
and esters? - Correct Answer - diphenhydramine (benadryl) this does
have inferior effectiveness though
what are the gas bubbles found in an otherwise normal anesthetic
cartridge? - Correct Answer - nitrogen that was used to clear the oxygen
from the solution as oxygen oxidizes epinephrine
, what should be done if a patient states they have an allergy to red wine,
and why?
- Correct Answer - red wine contains sulfites, thus vasopressors
containing solutions must be avoided if the patient states hypersensitivity
to red wines
are topical anesthetics absorbed well or poorly systemically? - Correct
Answer - poorly
what nerve supplies the lower lip innervation? - Correct Answer - mental
nerve
what would you suspect the cause would be if the patient had a lesion
on the lower lip the next day after TX with local anesthetics? - Correct
Answer - trauma
what happens during depolarization? - Correct Answer - reverse polarity
(sodium moves in and potassium moves out)
how should a used needle be re-capped? - Correct Answer - safely with
the one-handed scoop method
what part of the syringe indicates it is an aspirating syringe? - Correct
Answer - harpoon
Questions and Answers Rated A+ |
2026/2027 Guide
what is the dendritic zone?
- Correct Answer - area of free sensory nerve endings
what is an axon?
- Correct Answer - single nerve fiber made up of neural cytoplasm
(axoplasm)
what are possible causes of a burning sensation during injection?
- Correct Answer - pH of the solution, temperature of solution, rate of
injection, or contamination
post-op trismus is usually due to what?
- Correct Answer - trauma or hemorrhage -- avoidable causes include
multiple injections to same site, excessive volume to site, or
contaminated solutions
what is the biggest risk/side effect to hematoma?
,- Correct Answer - inconvenience to patient and embarrassment to
clinician
what is the cause of post-op tissue sloughing?
- Correct Answer - too much vasoconstricor to small surface area, also
can be caused by over-use of topical in small area
psychogenic responses such as vaso-vagal syncope during /after
injection are related to what?
- Correct Answer - stress/pain of local anesthetic administration NOT
due to the action of the anesthetic
what are the signs of anesthetic toxicity?
- Correct Answer - vertigo, nausea, and muscle twitching
what are anesthetic alternatives if the patient is allergic to both amides
and esters? - Correct Answer - diphenhydramine (benadryl) this does
have inferior effectiveness though
what are the gas bubbles found in an otherwise normal anesthetic
cartridge? - Correct Answer - nitrogen that was used to clear the oxygen
from the solution as oxygen oxidizes epinephrine
, what should be done if a patient states they have an allergy to red wine,
and why?
- Correct Answer - red wine contains sulfites, thus vasopressors
containing solutions must be avoided if the patient states hypersensitivity
to red wines
are topical anesthetics absorbed well or poorly systemically? - Correct
Answer - poorly
what nerve supplies the lower lip innervation? - Correct Answer - mental
nerve
what would you suspect the cause would be if the patient had a lesion
on the lower lip the next day after TX with local anesthetics? - Correct
Answer - trauma
what happens during depolarization? - Correct Answer - reverse polarity
(sodium moves in and potassium moves out)
how should a used needle be re-capped? - Correct Answer - safely with
the one-handed scoop method
what part of the syringe indicates it is an aspirating syringe? - Correct
Answer - harpoon
