Most cardiotoxic local anaesthetic:: (A) Dibucaine, (B) Bupivacaine, (C) Lignocaine, (D) Chlorprocaine
Answer is B. Ans: (b) BupivacaineRef: KDT 6th ed. 1357* Bupivacaine is a local anesthetic agent from Amide group.* It is most cardiotoxic LA.* Shortest acting LA: Chlorprocaine* Longest acting LA: Dibucaine* Most commonly used LA: Lignocaine* Local anesthetic which causes methhemoglobinemia: Prilocaine