This is a randomized-controlled trial in the patients undergoing esophago-gastro-duodenoscopy. The patients are randomized by computer into two arms: nebulized lidocaine and lidocaine spray. Both drugs are applied 15-20 minutes prior the prior the procedure. Only one endoscopist participate in this study. After the procedure finishes, the investigators evaluate the outcome and satisfaction of patients and endoscopist.
This study compares the effect of nebulized lidocaine and lidocaine spray in patients undergoing esophago-gastro-duodenoscopy. The investigators evaluate the success rate of the procedure between two methods.