This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Muscle relaxants, Subject name: Anaesthesia
A patient on atracurium develops seizures due to accumulation of 
Select and explain. 
A. Didanosine, B. Laudanosine, C. Methylated Atracurium, D. Sulfated Atracurium
B: Laudanosine
Answer: B: Laudanosine 
Explanation: Hoffman's degradation of atracurium produces a teiary metabolite,laudanosine , which can cross blood brain barrier and produce convulsions .