The Effect of Cap-assisted Water Exchange Colonoscopy on Straight Passage of the Colonoscope Through the Sigmoid Colon, Without Loop Formation

A prospective, single-center, single-blind, randomized controlled study to compare the proportion of straight passage through the sigmoid colon without loop formation between conventional colonoscope passage, left colon water exchange colonoscope passage, and cap-assisted left colon water exchange colonoscope passage through the sigmoid colon