RecruitingClinical trialSafety and Efficacy of Carbon Dioxide Gas for EndoscopyThe goal of this clinical trial is to compare the efficacy and safety of air versus carbon dioxide gas insufflation for endoscopy in children. The main question\[s\] it aims to answer are: •to determine safety of CO2 Assess patient comfort (abdominal pain, flatulence and bloating) with CO2 use when compared to air.