Mehemmoglobinemia is caused by: (A) Prilocarpine, (B) Ropivaciane, (C) Bupivacaine, (D) Procaine
Answer is A. Refer Katzung 11/e p449. The admistration of large doses of prilocarpine during regional anesthesia may lead to accumulation of the metabolite o-toludine an oxidizing agent capable of conveing hemoglobin to methemoglobin