<prompt> Muscle relaxant of choice in renal and hepatic failure is:Cis-atracuriumVecuroniumRocuroniumRapacuronium  <response>: Ans. A Cis-atracuriumRef: Katzung 9the p432; KDT 8the p380Atracurium and cis-atracurium are muscle relaxants of choice for renal and hepatic failure patients. 