DEN open · 2026
Current Status of Bowel Preparation for Colonoscopy in Japan: A Web-Based Survey of Endoscopists (PRESS Survey).
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Matsumoto Takayuki, Esaki Motohiro, Hirai Fumihito, Umeyama Minami, Suzuki Takahiro, Takatsuki Toshiki, Shimada Yusuke, Oota Akira, Ueno Masato
Аннотация
OBJECTIVES: The increasing number of patients with colorectal cancer underscores the importance of colonoscopy. Adequate bowel preparation is essential to ensure the quality and safety of colonoscopic examinations; however, data on the current practices in Japan remain limited. This study aimed to clarify the current status of bowel preparation, use of bowel-cleansing agents, and associated challenges among physicians performing colonoscopies.
METHODS: In March 2026, we conducted a nationwide web-based cross-sectional survey of physicians performing colonoscopies in Japan. The survey assessed bowel preparation practices, use of bowel-cleansing agents, constipation, and renal function before colonoscopy. Responses were obtained from 300 physicians who performed at least 10 colonoscopies per month.
RESULTS: Low-volume polyethylene glycol (PEG) plus ascorbate preparations were the most commonly used bowel-cleansing agents, followed by high-volume PEG preparations and magnesium-based agents. Cleansing efficacy and safety were the most highly valued characteristics of bowel-cleansing agents. 64.7% of physicians reported that the perceived frequency of inadequate bowel preparation was >10% among their patients. Although 64.3% of the physicians reported always assessing constipation, only 32.7% reported always evaluating renal function before colonoscopy. Compared with hospital-based physicians, those working in clinics reported a significantly lower proportion of inadequate bowel preparation, but a significantly lower rate of renal function assessment.
CONCLUSION: Although cleansing efficacy and safety are prioritized in bowel preparation for colonoscopy in Japan, physicians perceived inadequate bowel preparation to occur in a substantial proportion of patients. Thus, further optimization of bowel preparation strategies and more consistent assessment of renal function before colonoscopy are needed.
TRIAL REGISTRATION: University Hospital Medical Information Network (UMIN000060808).
METHODS: In March 2026, we conducted a nationwide web-based cross-sectional survey of physicians performing colonoscopies in Japan. The survey assessed bowel preparation practices, use of bowel-cleansing agents, constipation, and renal function before colonoscopy. Responses were obtained from 300 physicians who performed at least 10 colonoscopies per month.
RESULTS: Low-volume polyethylene glycol (PEG) plus ascorbate preparations were the most commonly used bowel-cleansing agents, followed by high-volume PEG preparations and magnesium-based agents. Cleansing efficacy and safety were the most highly valued characteristics of bowel-cleansing agents. 64.7% of physicians reported that the perceived frequency of inadequate bowel preparation was >10% among their patients. Although 64.3% of the physicians reported always assessing constipation, only 32.7% reported always evaluating renal function before colonoscopy. Compared with hospital-based physicians, those working in clinics reported a significantly lower proportion of inadequate bowel preparation, but a significantly lower rate of renal function assessment.
CONCLUSION: Although cleansing efficacy and safety are prioritized in bowel preparation for colonoscopy in Japan, physicians perceived inadequate bowel preparation to occur in a substantial proportion of patients. Thus, further optimization of bowel preparation strategies and more consistent assessment of renal function before colonoscopy are needed.
TRIAL REGISTRATION: University Hospital Medical Information Network (UMIN000060808).