Single arm pilot study to evaluate the effectiveness of oolong tea in upper gastrointestinal endoscopy - Single arm pilot study to evaluate the effectiveness of oolong tea in upper gastrointestinal endoscopy

Five people were enrolled in this study. The mean age was 55.4 years (SD 6.0). One was male and four were female. The mean examination time was 456 seconds (SD 74.9). The mean of total mucosal visibility score was 14.8 (SD 3.9). Since simethicone/Pronase was additionally used in 2 cases, this study was discontinued in accordance with the protocol. In 4 of 5 cases, the effectiveness of drinking oolong tea in improving visibility was hardly observed.