Deck 33: Local Anesthesia

Question 1

An infection in an area can prevent the accumulation of effective concentrations of local anesthetic solution because of

A) Low tissue pH
B) The intense stimulation of pain due to the infection
C) The rapid absorption of the solution into systemic circulation

Answer 1

Low tissue pH

Question 2

Which of the following injections would be needed to provide anesthesia for a mandibular quadrant during scaling and root debridement procedures? Select all that apply.

A)Inferior alveolar nerve block
B)Buccal nerve block
C)Mental nerve block
D)Incisive nerve block

Answer 2

Inferior alveolar nerve block
Buccal nerve block

Question 3

The higher the gauge number of a needle

A) The larger the diameter of the lumen
B) The smaller the diameter of the lumen
C) The easier it is to aspirate
D) The less likely the needle will break

Answer 3

The smaller the diameter of the lumen

Question 4

When providing anesthesia for periodontal debridement of the maxillary left quadrant,which of the following nerves would require anesthesia?

A) Inferior alveolar,buccal
B) Greater palatine,nasopalatine
C) Posterior superior alveolar,middle superior alveolar,anterior superior alveolar
D) Posterior superior alveolar,middle superior alveolar,anterior superior alveolar,nasopalatine,greater palatine

Question 5

Match the following conditions with the appropriate descriptor.
An error that can be prevented by avoiding inserting a needle up to the hub or bending a needle

A)Hematoma
B)Paresthesia
C)Needle breakage
D)Epithelial desquamation
E)Post-injection lesion
F)Trismus

Question 6

Which of the following are benefits of including a vasoconstrictor with the anesthetic? Select all that apply.

A)Inferior alveolar nerve block
B)Buccal nerve block
C)Mental nerve block
D)Incisive nerve block

Question 7

The three divisions of the V Cranial nerve (trigeminal nerve)include all of the following EXCEPT one.Which one is the EXCEPTION?

A) Mandibular
B) Olfactory
C) Maxillary
D) Ophthalmic

Question 8

What is the recommended rate for deposition of local anesthetic?

A) 1.8 mL over 20 to 30 seconds
B) 1.8 mL over 30 to 60 seconds
C) 1.8 mL over 1 to 2 minutes
D) 1.8 mL over 2 to 3 minutes

Question 9

What is the appropriate method for recapping the anesthetic needle?

A) Two-handed technique
B) One-handed scoop technique
C) The needle should not be recapped.

Question 10

Match the following conditions with the appropriate descriptor.
Latent lesions that develop following an injection due to manipulation of the tissue

A)Hematoma
B)Paresthesia
C)Needle breakage
D)Epithelial desquamation
E)Post-injection lesion
F)Trismus

Question 11

The anterior superior alveolar injection is recommended for anesthesia of the

A) Maxillary molars and associated buccal tissue
B) Palatal tissue anterior to the mesial of the first premolar
C) Maxillary anterior teeth and facial tissue
D) palatal tissue anterior to the mesial of the first premolar

Question 12

To ensure that the anesthetic is not deposited into a blood vessel the clinician should

A) Aspirate twice,once when the needle is halfway to the injection site and again when the needle reaches the injection site.
B) Aspirate once at the injection site.
C) Aspirate twice,once when the needle reaches the injection site and again after rotating the needle a quarter turn at the injection site.
D) Aspirate once when the needle is halfway to the injection site.

Question 13

What is the insertion site for the middle superior alveolar block?

A) The height of the mucobuccal fold over the distal buccal root of the maxillary second molar
B) The height of the mucobuccal fold over the mesial buccal root of the maxillary first molar
C) The height of the mucobuccal fold over the maxillary first premolar
D) The height of the mucobuccal fold over the maxillary second premolar

Question 14

A positive aspiration occurs when blood is seen flowing into the cartridge.When this occurs,the needle and cartridge should be replaced to determine the results of subsequent aspirations.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true; the second is false.
D) The first statement is false; the second is true.

Question 15

A patient's extraoral tissue becomes ischemic after an injection.What is a likely cause of this effect?

A) Constriction of blood vessels due to deposition of a local anesthetic agent containing a vasoconstrictor
B) Anxiety
C) Injecting into the lingual nerve
D) Increased heart rate

Question 16

What class of drugs is contraindicated with the use of levonordefrin?

A) Tetracyclic antidepressants
B) Selective serotonin reuptake inhibitors
C) Monoamine oxidase inhibitors
D) Tricyclic antidepressants

Question 17

Match the following conditions with the appropriate descriptor.
May occur as a result of prolonged application of topical anesthetic

A)Hematoma
B)Paresthesia
C)Needle breakage
D)Epithelial desquamation
E)Post-injection lesion
F)Trismus

Question 18

The average length of a long needle is

A) 15 mm
B) 20 mm
C) 32 mm
D) 45 mm

Question 19

Match the following conditions with the appropriate descriptor.
Caused as a result of puncturing a blood vessel during an injection

A)Hematoma
B)Paresthesia
C)Needle breakage
D)Epithelial desquamation
E)Post-injection lesion
F)Trismus

Question 20

The posterior superior alveolar nerve block provides anesthesia for which of the following?

A) The maxillary first,second,and third molars; including the mesial buccal root of the first molar
B) The maxillary first,second,and third molars; excluding the mesial buccal root of the first molar
C) The mandibular first,second,and third molars; including the mesial buccal root of the first molar
D) The mandibular first,second,and third molars; excluding the mesial buccal root of the first molar

Question 21

Match the following conditions with the appropriate descriptor.
Contact with the medial pterygoid muscle during an injection that results in limited ability to open the jaw

A)Hematoma
B)Paresthesia
C)Needle breakage
D)Epithelial desquamation
E)Post-injection lesion
F)Trismus

Question 22

Match the following conditions with the appropriate descriptor.
Prolonged numbness and tingling due to trauma to the nerve during the administration of local anesthetic

A)Hematoma
B)Paresthesia
C)Needle breakage
D)Epithelial desquamation
E)Post-injection lesion
F)Trismus