Hypothesis: Carbon dioxide gas use for endoscopic insufflation is safe and results in less abdominal distension and discomfort; it is equally effective as air in pediatric patients undergoing endoscopic procedures. Aim 1: Determine the occurrence and severity of abdominal discomfort and distension associated with endoscopic procedures at baseline, upon awakening from anesthesia, at discharge and at 4 hours after discharge in carbon dioxide group when compared to the air group. Aim 2: Determine if the expertise level of the endoscopist contributes to abdominal discomfort and distension following endoscopy, and whether this differs in the carbon dioxide group versus air group. Aim 3: Determine if carbon dioxide is as effective as air for insufflation.
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Change in Abdominal Distension
Timeframe: Mean change in abdominal girth between time points were compared between groups