Evidence map›Paper›PMID 40470667›Full record

SynthesisDigestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society2025

Serious adverse events associated with bowel preparation for colonoscopy in Japan: Systematic review.

Toshihiro Tadano, Koichiro Abe, Seiju Sasaki, Teruhiko Terasawa, Satoyo Hosono, Takafumi Katayama, Keika Hoshi, Tomio Nakayama, Chisato Hamashima

Abstract readSystematic Review
In one paragraph

Synthesis in Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Article
  2. Management of Colorectal Sessile Serrated Lesions in Elderly Patients.Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society · 2026
    Review
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Toshihiro TadanoCancer Detection Center, Miyagi Cancer Society, Miyagi, Japan.
Koichiro AbeDepartment of Medicine, Teikyo University School of Medicine, Tokyo, Japan.
Seiju SasakiCenter for Preventive Medicine, St. Luke's International Hospital Affiliated Clinic, Tokyo, Japan.
Teruhiko TerasawaSection of General Internal Medicine, Department of Emergency and General Internal Medicine, Fujita Health University School of Medicine, Aichi, Japan.
Satoyo HosonoDivision of Cancer Screening Assessment and Management, National Cancer Center Institute for Cancer Control, Tokyo, Japan.
Takafumi KatayamaDepartment of Statistics and Computer Science, College of Nursing Art and Science, University of Hyogo, Hyogo, Japan.
Keika HoshiCenter for Health Informatics Policy, National Institute of Public Health, Saitama, Japan.
Tomio NakayamaDivision of Cancer Screening Assessment and Management, National Cancer Center Institute for Cancer Control, Tokyo, Japan.
Chisato HamashimaDepartment of Nursing, Faculty of Medical Technology, Teikyo University, Tokyo, Japan.

Funding

National Cancer Center Japan A-21
6 · The paper itself

Abstract

objectivesBowel preparation for colonoscopy can lead to serious adverse events (AEs), raising significant safety concerns in colorectal cancer (CRC) screening. A systematic review of these serious AEs in Japan was performed to explore potential management strategies.

methodsThe Ovid-MEDLINE and Ichushi databases were searched from inception to March 2024. Domestic studies that reported serious AEs in adults aged 18 years and older who were administered bowel cleansing agents or laxatives for a scheduled colonoscopy, regardless of its purpose, were extracted. Serious AEs were defined as those requiring hospitalization or extended hospital stays. Selected studies were assessed for quality verification using the established checklist.

resultsA total of 5049 articles were identified through database searches, and 54 articles were extracted based on selection criteria. Reports of the frequency of serious AEs were based on one case series study, which found 13.9 cases of bowel obstruction and 2.3 cases of bowel perforation per 100,000 colonoscopies. Multiple serious AEs caused by different agents were identified in 78 cases across 54 articles. These AEs were predominantly observed in elderly individuals and those with comorbidities. Though most cases were associated with diagnostic tests for symptomatic patients, some were also observed in primary screening or fecal test-positive individuals. The most common AE was induced by bowel obstruction, primarily in abdominally symptomatic patients, including one fatality.

conclusionThe frequency and characteristics of serious AEs associated with bowel preparation for colonoscopy in Japan were presented. These findings may contribute to managing these AEs, specifically in CRC screening.

Indexed as

CatharticsColonoscopyColorectal NeoplasmsLaxativesEarly Detection of CancerHumansJapanCatharticsLaxativesadverse drug eventbowel preparation solutioncolonoscopylaxativesystematic review

Identifiers

PMID40470667
PMCPMC12427159

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.