Local Anesthesia CDCA Practice
Questions and Answers Graded A+
A patient has liver damage; what should you consider about amides? - ANSWER-
A woman has immediate swelling on her face following PSA injection. What was the
cause? - ANSWER-Needle entered the ptyergoid plexus of veins
How do you dispose of the syringe armamentarium? - ANSWER-Sharps Container
How much epinephrine is in one cartridge of 2% Lidocaine 1:100,000 - ANSWER-
How should the needle usually be oriented? - ANSWER-toward the bone
If a patient received two cartridges of anesthetic, how much volume did they receive? -
ANSWER-3.6ml
If the patient has atypical plasma cholinesterase, what drug will they have a problem
metabolizing? - ANSWER-esters
If you give a PSA, what root may not be anesthetized? - ANSWER-Mesial buccal root of
first molar
If you inject 1/3 of the needle on an IA and hit bone, what do you do? - ANSWER-retract
needle from bone, readjust syringe so needle is pointing more posteriorly along the
mandible.
If you inject 1ml per minute, what is the expected outcome? - ANSWER-successful,
atraumatic injection
Inserting the needle too far in this injection risks hitting the pterygoid plexus? -
ANSWER-PSA
Landmarks for the IA? - ANSWER-Ptyerygomandibular raphe and coronoid notch
Local anesthetics decrease the (depolarization or repolarization?) phase of the action
potential. - ANSWER-Depolarization
Needle gauge- what lumen is the smallest? - ANSWER-30
(the bigger the number, the smaller the opening)
Patient experiences a sharp tingling pain and immediate anesthesia; what happened? -
ANSWER-Contacted the nerve sheath
Questions and Answers Graded A+
A patient has liver damage; what should you consider about amides? - ANSWER-
A woman has immediate swelling on her face following PSA injection. What was the
cause? - ANSWER-Needle entered the ptyergoid plexus of veins
How do you dispose of the syringe armamentarium? - ANSWER-Sharps Container
How much epinephrine is in one cartridge of 2% Lidocaine 1:100,000 - ANSWER-
How should the needle usually be oriented? - ANSWER-toward the bone
If a patient received two cartridges of anesthetic, how much volume did they receive? -
ANSWER-3.6ml
If the patient has atypical plasma cholinesterase, what drug will they have a problem
metabolizing? - ANSWER-esters
If you give a PSA, what root may not be anesthetized? - ANSWER-Mesial buccal root of
first molar
If you inject 1/3 of the needle on an IA and hit bone, what do you do? - ANSWER-retract
needle from bone, readjust syringe so needle is pointing more posteriorly along the
mandible.
If you inject 1ml per minute, what is the expected outcome? - ANSWER-successful,
atraumatic injection
Inserting the needle too far in this injection risks hitting the pterygoid plexus? -
ANSWER-PSA
Landmarks for the IA? - ANSWER-Ptyerygomandibular raphe and coronoid notch
Local anesthetics decrease the (depolarization or repolarization?) phase of the action
potential. - ANSWER-Depolarization
Needle gauge- what lumen is the smallest? - ANSWER-30
(the bigger the number, the smaller the opening)
Patient experiences a sharp tingling pain and immediate anesthesia; what happened? -
ANSWER-Contacted the nerve sheath
