<prompt> A child presents with bladder exstrophy and chronic renal failure. The muscle relaxant of choice to be used during surgery of exstrophy in this child is:AtracuriumMivacuriumPancuroniumRocuronium  <response>: Ans. A AtracuriumRef: Katzung 11the p453, KDT 8the p380Atracurium is eliminated by Hoffmans elimination i.e. it does not require liver or kidney. It is the muscle relaxant of choice in hepatic and renal failure. 