Multiple choice

When not accompanied by a vasoconstrictor, all local anesthetic agents can produce

  1. vasodilation

  2. vasoconstriction

  3. increase in duration of action

  4. increase in efficiency
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A Correct answer
Explanation

When not accompanied by a vasoconstrictor, all local anesthetic agents can produce vasodilation. This action tends to increase their rate of absorption from the injection site, a feature that not only decrease the duration of action but also elevates the blood level, thus increasing the likelihood of producing toxicity.

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