Local anaesthesia causing methemoglobineinia -: (A) Procaine, (B) Prilocaine, (C) Etodicaine, (D) Ropivacaine
Answer is B. O-toludine metabolites of prilocaine accumulate after large dose of drug conve hemoglobin to methemoglobin lead to methemoglobulinemia, dose depndent(range of 10mg/kg) Treatment of methemoglobinemia is IV methylene blue Benzocaine also cause methemoglobinemia