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Worksheetsanest locale
Total questions: 10
Worksheet time: 6mins
Local anesthetics work by blocking (a) channels, preventing cell membrane depolarization.
Which of the following local anesthetics has the longest duration of action?
Lidocaine
Bupivacaine
Procaine
Benzocaine
What is the order of nerve fiber sensitivity to local anesthetics?
Aδ > C > Aα
C > Aδ > Aα
Aα > C > Aδ
Aδ > Aα > C
What effect do vasoconstrictors have when added to local anesthetics?
Reduce the duration of the anesthetic effect
Increase systemic absorption and toxicity
Delay absorption and increase safety
Reduce the intensity of the anesthetic effect
Adding (a) to lidocaine increases the duration and intensity of the anesthetic effect by reducing systemic absorption.
What is the major risk of administering bupivacaine?
Methemoglobinemia
Severe hypotension
Severe cardiac toxicity
Severe allergic reactions
Which regional anesthesia technique involves injecting the anesthetic near a nerve plexus or nerve trunk?
Surface anesthesia
Peripheral nerve block
Intra-articular anesthesia
Epidural anesthesia
What effect does hyaluronidase have when added to local anesthetics?
Increases tissue penetration
Reduces tissue penetration
Slows down the onset of analgesic activity
Which of the following local anesthetics is an ester?
Mepivacaine
Ropivacaine
Lidocaine
Procaine
Local anesthetics are less effective in (a) tissues due to the low pH, which affects absorption.
