<prompt> Gases for PneumoperitoneumCO2N2O2Room air  <response>: CO2 is commonly used to create pneumoperitoneum as it is readily available, is cheaper, suppresses the combustion, is easily absorbed by tissues, has a high diffusion coefficient and is quickly released respiration. Other gases used are: Air, nitrous oxide, helium, argon. Reference : page 1183 SRBs manual of surgery 5th edition 