Question 1

It takes 2 minutes to deliver 1.8 mL of anesthetic using the Wand fast flow rate; this is the ideal flow rate for a traditional injection according to Malamed (2007) .

Accepted Answer

A)  Both statements are TRUE
B)  Both statements are FALSE
C)  The first statement is TRUE; the second statement is FALSE
D)  The first statement is FALSE; the second statement is TRUEE) A) and B)
F) A) and C)

Question 2

Lidocaine is metabolized primarily in the:

Accepted Answer

A)  Liver
B)  Kidney
C)  Plasma
D)  BloodstreamE) A) and D)
F) C) and D)

Question 3

A client develops paralysis of a half of his face and inability to close his eye on the side of an attempted inferior alveolar nerve block. The MOST logical explanation is that the injection was given into the:

Accepted Answer

A)  Parotid gland
B)  Masseter muscle
C)  Maxillary artery
D)  Posterior facial vein
E)  Pterygo-mandibular ligamentF) C) and E)
G) C) and D)

Question 4

What is(are)  the overdose effect(s)  of epinephrine?

Accepted Answer

A)  Palpitation
B)  Tachycardia
C)  Hypertension
D)  Headache
E)  All of the aboveF) All of the above
G) B) and E)

Question 5

The problem(s)  with topical anesthesia is(are) :

Accepted Answer

A)  Dosage control
B)  All are esters except 5% lidocaine
C)  Concentrations used exceed concentrations administered by injection
D)  Topical anesthetic agents containing benzocaine are, by far, the most common
E)  All of the aboveF) C) and E)
G) A) and E)

Question 6

All of the following statements about N2O are false EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  The toxic reaction is associated with too much N2O, which causes hypoxia.
B)  N2O is metabolized in the lungs
C)  N2O works by blocking pain perception
D)  N2O affects heart rate, blood pressure, liver, and kidney
E)  N2O makes the client perceive time as passing slowlyF) A) and D)
G) B) and D)

Question 7

All of the statements concerning local anesthetic needles are true EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  The term gauge refers to the diameter of the lumen of the needle
B)  The weakest portion of the needle is at its hub
C)  Larger needles provide more reliable aspirations
D)  Disposable needles will not normally become dull for at least 10 insertions
E)  Larger needles should be employed when a greater risk of positive aspiration existsF) A) and B)
G) D) and E)

Question 8

All of the following are relative contraindications to the elective use of nitrous oxide-oxygen conscious sedation EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Communication difficulty
B)  Epilepsy
C)  Asthma
D)  Nasal obstruction
E)  Chronic obstructive pulmonary diseaseF) A) and B)
G) None of the above

Question 9

The gauge of a dental needle MOST recommended for intraoral injections with high risk of aspiration is:

Accepted Answer

A)  18 gauge
B)  30 gauge
C)  27 gauge
D)  25 gauge
E)  23 gaugeF) C) and D)
G) A) and B)

Question 10

Within seconds following a posterior superior alveolar injection, a client's face becomes distended and swollen on the injected side. The appropriate action by the hygienist would be to:

Accepted Answer

A)  Have the dentist administer an antihistamine
B)  Have the dentist administer an antibiotic
C)  Have the dentist incise and drain
D)  Counsel the client, apply pressure to the site, and ice to the area
E)  Ask the client to exhaleF) None of the above
G) A) and D)

Question 11

During the administration of an inferior alveolar nerve block, the needle is inserted:

Accepted Answer

A)  Medial to the pterygomandibular raphe
B)  Medial to the medial pterygoid muscle
C)  Lateral to the pterygomandibular raphe
D)  At the height of the maxillary tuberosity
E)  Lateral to the ramus of the mandibleF) A) and B)
G) A) and C)

Question 12

If the nitrous oxide (N2O)  flow rate is 2 liters/minute (L/min)  and that of O2 is 4 L/min, what is the percentage of the N2O ?

Accepted Answer

A)  33%
B)  67%
C)  50%
D)  None of the aboveE) A) and B)
F) All of the above

Question 13

Once the minimal threshold stimulus has been reached, the impulse will travel the entire length of the fiber without stimulation. This explains:

Accepted Answer

A)  Pain perception
B)  Pain reaction threshold
C)  Absolute refractory period
D)  Membrane potential
E)  All-or-none lawF) D) and E)
G) A) and C)

Question 14

All of the following statements about local anesthesia are true EXCEPT for one. Which one is the EXCEPTION?

Accepted Answer

A)  Hemostasis is only achieved when the vasoconstrictor is deposited into the area of bleeding
B)  Maximum dosages of all drugs administered by injection should be calculated by body weight
C)  Children can tolerate adult doses of local anesthetics because of their faster metabolism, and overdose is of little concern
D)  The possible causes of decreased anesthetic effect include edema, pH, and vascularity
E)  Overdose reactions are dose related; allergic reactions are not dose relatedF) A) and B)
G) C) and D)

Question 15

The purpose of aspirating before injecting a local anesthetic solution is to prevent:

Accepted Answer

A)  Allergic reactions
B)  Intravascular injections
C)  Traumatic injections
D)  TrismusE) A) and D)
F) All of the above

Question 16

Which of the following nerves should be adequately anesthetized to scale and root-debride a maxillary first molar?

Accepted Answer

A)  GP/PSA
B)  LP/GP/NP
C)  PSA/MSA/GP
D)  ASA/MSA/GP
E)  PSA/MSA/LPF) C) and E)
G) B) and D)

Question 17

Inadvertent rapid intravenous injection of a local anesthetic containing a vasoconstrictor may cause:

Accepted Answer

A)  Convulsions
B)  Palpitations
C)  Unconsciousness
D)  Depressed respiration
E)  All of the aboveF) None of the above
G) D) and E)

Question 18

Within seconds following a posterior superior alveolar injection, a client's face becomes distended and swollen on the injected side. The condition suspected in this situation is most likely a/an:

Accepted Answer

A)  Aneurysm
B)  Hematoma
C)  Angioedema
D)  Allergy
E)  InfectionF) None of the above
G) C) and D)

Question 19

All of the statements concerning local anesthetic cartridges are true EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  The glass dental cartridge should not be autoclaved
B)  No alcohol should be present around the cartridges when they are stored outside the packaging container
C)  The rubber plunger is treated with silicone to decrease the incidence of "sticky stoppers"
D)  Cartridges exposed to extended periods of direct sunlight may have their contents undergo accelerated destruction
E)  Manufacturers recommend freezing cartridges so that they may be used beyond the posted expiration dateF) B) and C)
G) None of the above

Question 20

The maximum safe dose of epinephrine for the healthy adult is 0.2 mg. How many cartridges of 1 : 100,000 epinephrine can be administered?

Accepted Answer

A)  2 cartridges
B)  5 cartridges
C)  9 cartridges
D)  10 cartridges
E)  11 cartridgesF) D) and E)
G) A) and D)

Exam 18: Management of Pain and Anxiety

All of the statements concerning local anesthetic needles are true EXCEPT one. Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

The problem(s) with topical anesthesia is(are) :

Correct AnswerverifiedShow Answer

Inadvertent rapid intravenous injection of a local anesthetic containing a vasoconstrictor may cause:

Correct AnswerverifiedShow Answer

During the administration of an inferior alveolar nerve block, the needle is inserted:

Correct AnswerverifiedShow Answer

Which of the following nerves should be adequately anesthetized to scale and root-debride a maxillary first molar?

Correct AnswerverifiedShow Answer

All of the following are relative contraindications to the elective use of nitrous oxide-oxygen conscious sedation EXCEPT one. Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

The purpose of aspirating before injecting a local anesthetic solution is to prevent:

Correct AnswerverifiedShow Answer

It takes 2 minutes to deliver 1.8 mL of anesthetic using the Wand fast flow rate; this is the ideal flow rate for a traditional injection according to Malamed (2007) .

Correct AnswerverifiedShow Answer

Lidocaine is metabolized primarily in the:

Correct AnswerverifiedShow Answer

All of the following statements about N2O are false EXCEPT one. Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

The maximum safe dose of epinephrine for the healthy adult is 0.2 mg. How many cartridges of 1 : 100,000 epinephrine can be administered?

Correct AnswerverifiedShow Answer

What is(are) the overdose effect(s) of epinephrine?

Correct AnswerverifiedShow Answer

Within seconds following a posterior superior alveolar injection, a client's face becomes distended and swollen on the injected side. The appropriate action by the hygienist would be to:

Correct AnswerverifiedShow Answer

All of the statements concerning local anesthetic cartridges are true EXCEPT one. Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

The gauge of a dental needle MOST recommended for intraoral injections with high risk of aspiration is:

Correct AnswerverifiedShow Answer

All of the following statements about local anesthesia are true EXCEPT for one. Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

Within seconds following a posterior superior alveolar injection, a client's face becomes distended and swollen on the injected side. The condition suspected in this situation is most likely a/an:

Correct AnswerverifiedShow Answer

Once the minimal threshold stimulus has been reached, the impulse will travel the entire length of the fiber without stimulation. This explains:

Correct AnswerverifiedShow Answer

If the nitrous oxide (N2O) flow rate is 2 liters/minute (L/min) and that of O2 is 4 L/min, what is the percentage of the N2O ?

Correct AnswerverifiedShow Answer

A client develops paralysis of a half of his face and inability to close his eye on the side of an attempted inferior alveolar nerve block. The MOST logical explanation is that the injection was given into the:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

All of the following statements about N₂O are false EXCEPT one. Which one is the EXCEPTION?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If the nitrous oxide (N₂O) flow rate is 2 liters/minute (L/min) and that of O₂ is 4 L/min, what is the percentage of the N₂O ?

Correct Answer
verified

Correct Answer
verified