140
Participants
Start Date
February 1, 2020
Primary Completion Date
April 30, 2021
Study Completion Date
May 31, 2021
N-acetylcysteine solution
use N-acetylcysteine solution to alleviate esophageal irritation caused by Lugol's chromoendoscopy
sodium thiosulfate solution
use sodium thiosulfate solution to alleviate esophageal irritation caused by Lugol's chromoendoscopy
Xijing Hospital of Digestive Disease, Xi'an
Xijing Hospital of Digestive Diseases
OTHER