Which of the following local anaesthetic has the potential to cause methamoglobinemia ?: (A) Procaine, (B) Prilocaine, (C) Tetracaine, (D) Bupivacaine
Answer is B. Prilocaine is a local anaesthetic similar to lignocaine. A metabolite of prilocaine has the potential to cause methaemoglobinemia. Prilocaine is used mainly for infiltration, nerve block and for providing intravenous regional anaesthesia.