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Gastroenterology Research and Practice
Volume 2017 (2017), Article ID 4898914, 7 pages
Clinical Study

The Effectiveness of Personalized Bowel Preparation Using a Smartphone Camera Application: A Randomized Pilot Study

1Division of Gastroenterology, Department of Internal Medicine, Haeundae Paik Hospital, Busan, Republic of Korea
2College of Medicine, Inje University, Gimhae, Republic of Korea
3Department of Gastroenterology, Dongnam Institute of Radiological and Medical Sciences, Busan, Republic of Korea
4College of Design, Inje University, Gimhae, Republic of Korea
5Department of Computer Engineering, Inje University, Gimhae, Republic of Korea

Correspondence should be addressed to Jongha Park

Received 30 March 2017; Accepted 4 July 2017; Published 8 August 2017

Academic Editor: Michel Kahaleh

Copyright © 2017 Jae won Jung et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. We aimed to investigate the effectiveness of a smartphone application that analyzes and judges the optimal dosage of polyethylene glycol (PEG) for bowel preparation. Methods. Patients were assigned to use the smartphone camera application (app group) or written instructions (non-app group). The smartphone camera application was programmed to analyze the bowel preparation quality and automatically determine the dosage of PEG from an analysis of stool images. In contrast, the non-app group consumed PEG solution according to the manual. Results. The primary outcome was the quality of the bowel preparation based on blinded ratings using the Ottawa bowel preparation scale (OBPS). There was no statistically significant difference in the mean OBPS scores between the two groups (). However, the app group consumed a lower dose of PEG than the non-app group (mean dosage (mL): 3713.2 ± 405.8 versus 3979.2 ± 102.06, ). The app group (5-point Likert scale; mean score 4.37 ± 0.895) had high acceptance of the application. Conclusions. Although the app group consumed a lower PEG dose, the bowel preparation quality was similar in the two groups. Moreover, use of the smartphone camera application enhanced compliance with the bowel preparation.