<prompt> Laudanosine is a metabolite of:AtracuriumCis-atracuriumPancuroniumVecuronium  <response>: Ans. A AtracuriumRef: Miller 7the p880Both atracurium and cis-atracurium are eliminated by Hoffmans elimination. Atracurium is also metabolized by liver to some extent and result in production of a metabolite, laudanosine that can cause CNS toxicity including seizures. On the other hand cis-atracurium is almost completely eliminated by Hoffmans elimination and produce negligible laudanosine. 