Local Anesthesia CDCA Exam Practice (Questions and
Answers)
what is the purpose of the bevel? - ANSWER -decrease deflection
is topical (benzocaine) absorbed systemically? - ANSWER -no
What cause would you expect if a patient had a lesion on the lower lip the day
after? - ANSWER -trauma
Which one transmits impulses faster? A myelinated nerve or unmyelinated nerve -
ANSWER -myelinated
How should you recap a needle? - ANSWER -One-handed scoop technique
Should the bevel be towards or away from bone? - ANSWER -against/towards
bone
When do you aspirate? - ANSWER -right before anesthetic is deposited
what part of the syringe indicates it is an aspirating syringe? - ANSWER -harpoon
What tissue is local anesthetic least effective on? - ANSWER -keratinized/palatal
what local anesthetic is metabolized by pseudocholinesterase? - ANSWER -esters
where are amides metabolized? - ANSWER -liver
Which antiseptic should not be used? - ANSWER -alcohol
the coronoid notch is a landmark for which injection? - ANSWER -inferior
alveolar
what could happen if you insert the needle into the hub? - ANSWER -breakage
, what is the possible cause of pain upon removal of the needle? - ANSWER -
needle barb
how does a self aspirating syringe work? - ANSWER -when you let off pressure,
it aspirates
what is the maximum recommended dose for a normal patient - ANSWER -0.2
mg
what is the maximum recommended dose for a cardiac patient? - ANSWER -0.04
mg
What causes a hematoma? - ANSWER -Injecting in the pterygoid plexus during a
PSA injection
how much volume is in a single cartridge of LA? - ANSWER -1.8 (1.7 ml)
How much volume is in 2 cartridges? - ANSWER -3.6 ml (3.4)
which needle gauge is the smallest? - ANSWER -30
which needle gauge is the largest? - ANSWER -25
what function does sodium chloride provide in LA solutions? - ANSWER -makes
it isotonic
what is the antioxidant in la that prevents biodegradation of la? - ANSWER -
sodium bisulfite (not sulfide)
what is the action of vasopressors? (epi is a vasopressor) - ANSWER -increases
duration
How much epi in one cartridge of 2% lidocaine with 1:100,000 epi? - ANSWER -
.018mg
Answers)
what is the purpose of the bevel? - ANSWER -decrease deflection
is topical (benzocaine) absorbed systemically? - ANSWER -no
What cause would you expect if a patient had a lesion on the lower lip the day
after? - ANSWER -trauma
Which one transmits impulses faster? A myelinated nerve or unmyelinated nerve -
ANSWER -myelinated
How should you recap a needle? - ANSWER -One-handed scoop technique
Should the bevel be towards or away from bone? - ANSWER -against/towards
bone
When do you aspirate? - ANSWER -right before anesthetic is deposited
what part of the syringe indicates it is an aspirating syringe? - ANSWER -harpoon
What tissue is local anesthetic least effective on? - ANSWER -keratinized/palatal
what local anesthetic is metabolized by pseudocholinesterase? - ANSWER -esters
where are amides metabolized? - ANSWER -liver
Which antiseptic should not be used? - ANSWER -alcohol
the coronoid notch is a landmark for which injection? - ANSWER -inferior
alveolar
what could happen if you insert the needle into the hub? - ANSWER -breakage
, what is the possible cause of pain upon removal of the needle? - ANSWER -
needle barb
how does a self aspirating syringe work? - ANSWER -when you let off pressure,
it aspirates
what is the maximum recommended dose for a normal patient - ANSWER -0.2
mg
what is the maximum recommended dose for a cardiac patient? - ANSWER -0.04
mg
What causes a hematoma? - ANSWER -Injecting in the pterygoid plexus during a
PSA injection
how much volume is in a single cartridge of LA? - ANSWER -1.8 (1.7 ml)
How much volume is in 2 cartridges? - ANSWER -3.6 ml (3.4)
which needle gauge is the smallest? - ANSWER -30
which needle gauge is the largest? - ANSWER -25
what function does sodium chloride provide in LA solutions? - ANSWER -makes
it isotonic
what is the antioxidant in la that prevents biodegradation of la? - ANSWER -
sodium bisulfite (not sulfide)
what is the action of vasopressors? (epi is a vasopressor) - ANSWER -increases
duration
How much epi in one cartridge of 2% lidocaine with 1:100,000 epi? - ANSWER -
.018mg
