CDCA BOARD EXAM LOCAL ANESTHESIA |
QUESTIONS AND 100% CORRECT ANSWERS
RATED A+ | 2026\2027 LATEST VERSION
Where is the injection site for the buccal injection?
-Correct Answer-.Buccal and Distal to the last molar at the height of the occlusal plane.
The maxillary nerve is primarily?
A. Sensory. B. Motor. C. Both
-Correct Answer-.A. Sensory
If you inject 1/3 of the needle on an IA and hit bone, what do you do?
-Correct Answer-.Pull out and redirect over the incisors.
What is the most common cause of needle breakage?
-Correct Answer-.Bending the needle
Inserting the needle too far in this injection risks hitting the pterygoid plexus?
-Correct Answer-.PSA
Patient experiences a sharp tingling pain and immediate anesthesia; what happened?
-Correct Answer-.The needle went through the nerve.
What should be the depth of the needle insertion for the PSA?
-Correct Answer-.Half of the needle length.
What gauge needle should be used for infiltration?
-Correct Answer-.25 or 27 short.
What is the purpose of vasoconstrictor?
-Correct Answer-.Counteract the vasodilating properties of the anesthesia.
What function do vasoconstrictors serve to prevent overdose?
-Correct Answer-.They allow for slow absorption
A patient has liver damage, what should you consider about administering amides?
-Correct Answer-.Can cause system toxicity. Give cardiac dose
The reason for most cases of post injection infection is?
, -Correct Answer-.Improper handling of armamentarium.
What is the preservative of anesthetic solution?
-Correct Answer-.Sodium Bisulfite
If the patient experiences dehydration of the cornea following treatment, what nerve was
involved?
-Correct Answer-.Ophthalmic Nerve
If a patient has atypical plasma cholinesterase, what drug will they have a problem
metabolizing?
-Correct Answer-.Esters
The patient is experiencing difficulty breathing and goes unconscious, what should you
give them?
-Correct Answer-.Epi Pen
When is the most important time to aspirate during injections?
-Correct Answer-.Before deposition of anesthetic
What nerve has been anesthetized if the anterior 2/3 of the tongue is numb?
-Correct Answer-.The Lingual Nerve
If you inject 1ml per minute, what is the expected outcome?
-Correct Answer-.Good outcome
If a patient received two cartridges of anesthetic, how much volume did they receive?
-Correct Answer-.Either 3.6 or 3.4
Patient has significant infection. What caused the difficulty of the pt. Achieving
anesthesia?
-Correct Answer-.The tissue is too acidic- the pH is too low.
What probably caused a the lesson on the lower lip that was present the following day
of a local anesthesia injection?
-Correct Answer-.Self mutilation or trauma.
What is the volume of a single cartridge of local anesthetic?
-Correct Answer-.1.8 or 1.7 ml
QUESTIONS AND 100% CORRECT ANSWERS
RATED A+ | 2026\2027 LATEST VERSION
Where is the injection site for the buccal injection?
-Correct Answer-.Buccal and Distal to the last molar at the height of the occlusal plane.
The maxillary nerve is primarily?
A. Sensory. B. Motor. C. Both
-Correct Answer-.A. Sensory
If you inject 1/3 of the needle on an IA and hit bone, what do you do?
-Correct Answer-.Pull out and redirect over the incisors.
What is the most common cause of needle breakage?
-Correct Answer-.Bending the needle
Inserting the needle too far in this injection risks hitting the pterygoid plexus?
-Correct Answer-.PSA
Patient experiences a sharp tingling pain and immediate anesthesia; what happened?
-Correct Answer-.The needle went through the nerve.
What should be the depth of the needle insertion for the PSA?
-Correct Answer-.Half of the needle length.
What gauge needle should be used for infiltration?
-Correct Answer-.25 or 27 short.
What is the purpose of vasoconstrictor?
-Correct Answer-.Counteract the vasodilating properties of the anesthesia.
What function do vasoconstrictors serve to prevent overdose?
-Correct Answer-.They allow for slow absorption
A patient has liver damage, what should you consider about administering amides?
-Correct Answer-.Can cause system toxicity. Give cardiac dose
The reason for most cases of post injection infection is?
, -Correct Answer-.Improper handling of armamentarium.
What is the preservative of anesthetic solution?
-Correct Answer-.Sodium Bisulfite
If the patient experiences dehydration of the cornea following treatment, what nerve was
involved?
-Correct Answer-.Ophthalmic Nerve
If a patient has atypical plasma cholinesterase, what drug will they have a problem
metabolizing?
-Correct Answer-.Esters
The patient is experiencing difficulty breathing and goes unconscious, what should you
give them?
-Correct Answer-.Epi Pen
When is the most important time to aspirate during injections?
-Correct Answer-.Before deposition of anesthetic
What nerve has been anesthetized if the anterior 2/3 of the tongue is numb?
-Correct Answer-.The Lingual Nerve
If you inject 1ml per minute, what is the expected outcome?
-Correct Answer-.Good outcome
If a patient received two cartridges of anesthetic, how much volume did they receive?
-Correct Answer-.Either 3.6 or 3.4
Patient has significant infection. What caused the difficulty of the pt. Achieving
anesthesia?
-Correct Answer-.The tissue is too acidic- the pH is too low.
What probably caused a the lesson on the lower lip that was present the following day
of a local anesthesia injection?
-Correct Answer-.Self mutilation or trauma.
What is the volume of a single cartridge of local anesthetic?
-Correct Answer-.1.8 or 1.7 ml
