Multiple choice

Which one of the following local anesthetics is highly cardiotoxic?

  1. Lignocaine

  2. Procaine

  3. Mepivacaine

  4. Bupivacaine
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D Correct answer
Explanation

Negative effects on the cardiovascular system are not noted until blood levels of the local anesthetic are significantly elevated. But certain local anesthetics such as bupivacaine may precipitate potentially fatal ventricular firbrillation, and therefore is cardiotoxic at lethal doses.

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