Question

Which of the followina is a significant therapeutic effect of the ester local anesthetics? A. increase in diastolic blood pressure B. itching at the site of application C. loss of sensation to touch and warmth D. depression of motor neuron function The duration of action of a single administration of amide local anesthetic dibucaine or bupivacaine A. is shorter than the duration of action of procaine B. is longer than 30 minutes C. is decreased by adding epinephrine to the local anesthetic D. depends on the amount of cholinesterase in the blood Any local anesthetic decreases the response to pain (mechanism of action A. by binding and inactivating membrane ion channels that affect sodium movement B. after the drug reacts with receptors in the brain C. by removing sodium and potassium ions from the cells D. by increasing nerve conduction of painful stimuli

Answer 1

Answer: Itching at the site of application.

( The ester location anesthetic causes allergic reaction such as rashes, itching etc.)

Answer: It is longer than 30 minutes.

( The onset action of the amide local anesthetic dibucaine is up to 70 to 90 minutes.)

Answer: by binding and Inactivating membrane ion channels that affects sodium movement.

( It acts by inhibiting and blocking the ion channel)