WREB Local Anesthesia Written Questions with Correct Answers 100% Verified By Experts|
2025/2026 Latest Update
What foramen does the V3 branch of the trigeminal nerve exit? Foramen Ovale
When benzocaine topical is left on for over 2 mins, what will happen to the tissue? Tissue
sloughing
What is the purpose of sodium bisulfite? Preservative
What should you do if your patient is hyperventilating? Breathe into cupped hands
What is the purpose of administering oxygen after giving a patient nitrous oxide? Decrease
recovery time
What does the mental nerve anesthetize? facial gingival from the premolars to the central
incisors
A patient has a history of type I diabetes and angina. They lose consciousness. What treatment
options should you use? sugar/nitro glycerin
How much vasoconstrictor can you give a cardiac patient? .04 mg
Which local anesthetic causes the most vasoconstriction? Prilocaine
You have a patient with severe trismus, pain and cannot open their mouth normally. Which
injection should be used to do a right mandibular quadrant? Vazaroni-Akinosi
You have contacted bone during R-PSA. Your site of penetration was too: Medial
, What injection is best used for hemostasis? Infiltration
What is the site of penetration for a R-ASA? Height of the mucobuccal fold medial to the
eminence of the right canine
What is the most common adverse effect of local anesthetic? Syncope
Immediately after giving a patient 2% lidocaine w/ 1:100k epi they experience sharp pain on
their lect side traveling down their arm and up their face. It subsides 3-5 mins later. What is it?
Angina pectoris
Local anesthetic is not as effective in lower pH environment because the base ion cannot be
liberated from the anesthetic solution
A patient is allergic to sulfites. Which anesthetic would you NOT use on this patient?
lidocaine 2% 1:100k epi
Which agent causes the pH of the local anesthetic to be lower? sodium bisulfite
A sign of an allergy to local anesthetic is: redness/itching
After administering anesthetic, the hygienist notes a faint bluish mark next to the injection site
and also on the skin. The most likely cause of this is: hygienist slightly tore a blood vessel
(HEMATOMA)
If your patient has a bad liver, which type of anesthetic should be used? prilocaine or
procaine
2025/2026 Latest Update
What foramen does the V3 branch of the trigeminal nerve exit? Foramen Ovale
When benzocaine topical is left on for over 2 mins, what will happen to the tissue? Tissue
sloughing
What is the purpose of sodium bisulfite? Preservative
What should you do if your patient is hyperventilating? Breathe into cupped hands
What is the purpose of administering oxygen after giving a patient nitrous oxide? Decrease
recovery time
What does the mental nerve anesthetize? facial gingival from the premolars to the central
incisors
A patient has a history of type I diabetes and angina. They lose consciousness. What treatment
options should you use? sugar/nitro glycerin
How much vasoconstrictor can you give a cardiac patient? .04 mg
Which local anesthetic causes the most vasoconstriction? Prilocaine
You have a patient with severe trismus, pain and cannot open their mouth normally. Which
injection should be used to do a right mandibular quadrant? Vazaroni-Akinosi
You have contacted bone during R-PSA. Your site of penetration was too: Medial
, What injection is best used for hemostasis? Infiltration
What is the site of penetration for a R-ASA? Height of the mucobuccal fold medial to the
eminence of the right canine
What is the most common adverse effect of local anesthetic? Syncope
Immediately after giving a patient 2% lidocaine w/ 1:100k epi they experience sharp pain on
their lect side traveling down their arm and up their face. It subsides 3-5 mins later. What is it?
Angina pectoris
Local anesthetic is not as effective in lower pH environment because the base ion cannot be
liberated from the anesthetic solution
A patient is allergic to sulfites. Which anesthetic would you NOT use on this patient?
lidocaine 2% 1:100k epi
Which agent causes the pH of the local anesthetic to be lower? sodium bisulfite
A sign of an allergy to local anesthetic is: redness/itching
After administering anesthetic, the hygienist notes a faint bluish mark next to the injection site
and also on the skin. The most likely cause of this is: hygienist slightly tore a blood vessel
(HEMATOMA)
If your patient has a bad liver, which type of anesthetic should be used? prilocaine or
procaine
