Ch. 5 & 6 LA Evolve Questions

to achieve the optimal anesthetic effect, topical should remain at the site of application for

1-2 min

of the following patients, which is most likely to have a negative reaction to topical

a child

which type of patient should not be administered a longer acting local anesthetic

a child with cerebral palsy

most local anesthetic dental cartridges contain ______________of solution

1.8mL

it has been reported that up to _________________ of patients with an asthmatic condition are allergic to bisulfite

10%

an anesthetic containing a ___________concentration of epinephrine provides the most effective hemorrhage control

1:50,000

topical will anesthesize the affected area ____________into the tissue

2-3mm

a patient who has just been administered oraqix gel can expect a comfortable duration of anesthesia of approximately

20 min

oraqix gel produces an anesthetic effect within

30 seconds

which anesthetic agent is not recommended , by some authors, to use for the IA block due to reports of parasthesia

articaine

a nerve is more likely to sustain an anesthetic-induced injury from which of the following solutions

articaine 4%

which topical has the most rapid onset of action

benzocaine

drying the mucosa with a 2x2 gauze , prior to application of topical , assists in

both a and b accurate placement of topical increasing the visibility

which of the following are symptoms of a localized reaction to topical

both a and c irritation , burning , and stinging at the site of application tissue sloughing or discoloration and temporary change to taste perception

which anesthetic has anticonvulsant properties

both a and c lidocaine mepivacaine

mepivacaine produces severe vasodilation and is only available with a vasoconstrictor. mepicacaine is metabolized in the blood plasma.

both are false

topical anesthetics have a lower concentration of anesthetic than their injectable counterparts. this is necessary because some topical anesthetics contain a vasoconstrictor.

both are false

topical is available in many different forms: liquid, gel, spray, and patch. topical distributed in single dose applications decreases possibility of cross-contamination.

both are true

a toxic overdose of topical may result in which of the following

bradycardia

due to increased vascularity, inflamed tissue will display a/an___________onset of action and a/an____________duration

decreased; shortened

which topical is not classified as an ester or an amide, but as a ketone

dyclonine hydrochloride

which of the following vasoconstrictors are added to local anesthetic solutions in the US

epinephrine and levonordefrin

short-acting anesthetics do not contain a vasoconstrictor . Bupivicaine is the only short-acting anesthetic.

first is true second is false

which of the following is not an ideal property of an oral topical

it produces dependency on repeated use

which of the following anesthetic agents is available in both topical and injectable

lidocaine

which of the following actions is an appropriate response to a patient who is more (or less) sensitive to local anesthesia?

make a notation in the patients chart identifying the variation of response and the modification you made to achieve anesthesia

which of the following variations in anatomic structure would not affect the administration of anesthesia

malocclusion

which of the following anesthetics is the best choice when a vasoconstrictor is contraindicated

mepivacaine

your patient remembers having an allergic reaction to local anesthesia prior to 1984 but for many years has since been administered local with no complication. Your patient may actually have an allergy to ___________which was removed in 1984.

methylparaben

which of the following injection techniques will increase soft tissue and pulpal anesthesia

nerve block

which of the following is a eutectic mixture that will thicken into a gel once inserted into a periodontal pocket, relieving pain associated with nonsurgical periodontal therapy

oraqix

in extremely high doses, which agent may cause methemoglobinemia

prilocaine

which anesthetic is the least toxic

prilocaine

allergic reactions to topical anesthestics are

rare

which of the following choices does not act as a buffer in local solutions

sodium bisulfite

topicals are available in a variety of forms. which method of delivery is most likely to produce a toxic reaction

spray

mild allergic reactions to topical can include _______, ____________ and ____________

swelling, raised welts, itching

which topical has the longest average duration

tetracaine hydrochloride

the FDA has released a Public Health Advisory alerting consumers to the potential risk of life-threatening or fatal reactions to over-the-counter topical anesthetics. Some of these over-the-counter topicals are available in concentrations twice the strength of those used in a dental office.

the first is true second is false

which of the following in not an appropriate use for topical

to achieve pulpal anesthesia prior to restorative dental procedures