When phetolamine mesylate (OraVerse) is given after a dental procedure to reverse the local anesthetic effects, approximately how fast is the return to normal nerve sensation compared to the normal time for the anesthetic to wear off?

50% decrease in the time for normal sensation to return

10% decrease in the time for normal sensation to return

25% decrease in the time for normal sensation to return

80% decrease in the time for normal sensation to return

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Phentolamine mesylate (OraVerse) is a drug used to reverse soft tissue anesthesia and the associated functional deficits resulting from a local dental anesthetic containing a vasoconstrictor. Which statement best describes its mechansim of action?

Causes vasodilation and increased blood flow in iniection area

Prevents the influx of sodium into the neuron by blocking neuronal channels

Prevents the efflux of sodium out of the neuron

Causes vasoconstriction and decreased blood flow in injection area

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OraVerse dose is based upon

the number of cartridges of local anesthetic with vasoconstrictor administered.

weight

age

concentration of local anesthetic

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OraVerse (solution for injection/dental cartridge) is administered as a

submucosal injection

intravenous injection

intramuscular injection

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Phentolamine rnesylate (OraVerse) is an

alpha1-adrenergic receptor blocker.

alpha2-adrenergic receptor blocker.

beta2-adrenergic receptor blocker.

beta1-adrenergic receptor blocker.

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Sevoflurane

Inhalation agent for general ansthesia

Intravenous agent for general ansthesia

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Isoflurane

Inhalation agent for general ansthesia

Intravenous agent for general ansthesia

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Enflurane

Inhalation agent for general ansthesia

Intravenous agent for general ansthesia

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Thiopental (Pentothal)

Intravenous agent for general ansthesia

Inhalation agent for general ansthesia

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Methohexital (Brevial)

Intravenous agent for general ansthesia

Inhalation agent for general ansthesia

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Thiopental (Pentothal)

Ultrashort-acting barbiturate

Benzodiazepine

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Methohexital (Brevial)

Ultrashort-acting barbiturate

Benzodiazepine

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Diazepam (Valium)

Intravenous agent for general ansthesia

Inhalation agent for general ansthesia

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Midazolam (Versed)

Intravenous agent for general ansthesia

Inhalation agent for general ansthesia

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Lorazepam (Ativan)

Intravenous agent for general ansthesia

Inhalation agent for general ansthesia

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Diazepam (Valium)

Benzodiazepine

Ultrashort-acting barbiturate

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Midazolam (Versed)

Benzodiazepine

Ultrashort-acting barbiturate

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Lorazepam (Ativan)

Benzodiazepine

Ultrashort-acting barbiturate

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Neuroleptic-opioid combinations which are called neuroroleptanalgesics combine fentanyl (opyoid) and droperidol (a phenothiazine) is used for

Inrtavenous general anesthesia

Inhalation general anesthesia

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Propofol (Diprivan)

a short-acting hypnotic agent; vasodilator

is considcrcd a dissociative anesthetic

is a carboxylated imidazole derivative which acts similar to the ultrashortacting barbituratcs.

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