ArticleClinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association2017
Rectal Gas Volume Measured by Computerized Tomography Identifies Evacuation Disorders in Patients With Constipation.
Article in Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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.
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.
Who cites it
21 citing papers in PubMed, 33 citations in OpenAlex.
- Association Between CT-Based Rectal Stool Attenuation and Activities of Daily Living in Hospitalized Older Adults.Geriatrics & gerontology international · 2026Article
- Randomized Clinical Trial on the Efficacy and Safety of Preoperative Enema in the Prevention of Peritoneal Dialysis Catheter Dysfunction.Kidney international reports · 2026Article
- Short-Term Efficacy and Safety of Elobixibat for Chronic Constipation Assessed by Rectal Ultrasonography: A Retrospective Observational Study.Diagnostics (Basel, Switzerland) · 2026Article
- The fixel GI Parkinson's research and integrated support model (PRISM).Journal of Parkinson's disease · 2025Article
- Diagnostic Ability of Ultrasonography Compared with Computed Tomography for Assessing Rectal Feces.Journal of the anus, rectum and colon · 2024Article
- Potential Value of Biomarker-Based Approaches for Evaluation and Management of Costly Functional Gastrointestinal Diseases.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2023Review
- Evaluation of abdominal gas by plain abdominal radiographs.Neurogastroenterology and motility · 2023Article
- Correlation between Constipation Symptoms and Abdominal CT Imaging: A Cross-Sectional Pilot Study.Journal of clinical medicine · 2023Article
- Quantitative GC-TCD Measurements of Major Flatus Components: A Preliminary Analysis of the Diet Effect.Sensors (Basel, Switzerland) · 2022Article
- Article
- Clinical Evaluation of a Patient With Symptoms of Colonic or Anorectal Motility Disorders.Journal of neurogastroenterology and motility · 2020Review
- Mechanisms, Evaluation, and Management of Chronic Constipation.Gastroenterology · 2020Review
- Management of functional constipation in children and adults.Nature reviews. Gastroenterology & hepatology · 2020Review
- Intestinal gases: influence on gut disorders and the role of dietary manipulations.Nature reviews. Gastroenterology & hepatology · 2019Review
- What's in the pipeline for lower functional gastrointestinal disorders in the next 5 years?American journal of physiology. Gastrointestinal and liver physiology · 2019Review
- Usefulness of ultrasonographic evaluation of stool and/or gas distribution for the treatment strategy of chronic constipation.JGH open : an open access journal of gastroenterology and hepatology · 2019Article
- Audit of the diagnosis of rectal evacuation disorders in chronic constipation.Neurogastroenterology and motility · 2019Article
- New ultrasonographic evaluation of stool and/or gas distribution for treatment of chronic constipation.International journal of colorectal disease · 2018Article
- Recent advances in understanding and managing chronic constipation.F1000Research · 2018Review
- Experimental Paradigm for the Assessment of the Non-pharmacological Mechanism of Action in Medical Device Classification: The Example of Glycerine as Laxative.Frontiers in pharmacology · 2018Article
Corrections and comments
- Commented on by
Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
BACKGROUND &
aimsApproximately one third of patients who present to gastroenterology care with constipation have rectal evacuation disorders. We aimed to compare rectal gas volume, measured by computerized tomography (CT), in constipated patients with and without rectal evacuation disorders.
methodsIn a retrospective study, we collected data from 1553 patients with constipation, evaluated over 20 years. We analyzed data from 141 patients evaluated by anorectal manometry, balloon expulsion tests, and colon transit tests, collecting records of abdominal and pelvic CT examinations. Patients were classified into 3 subgroups: those with rectal evacuation disorders, slow-transit constipation, or normal-transit constipation. Two observers used standard CT software to identify variable regions of interest on each cross-sectional CT image that contained rectum and measured areas of gas in each slice; they then summated entire volumes of rectal gas. For the 3 groups, we compared rectal gas volume, maximal rectal gas transaxial area (measured by CT), and area of rectal gas (vertical) on the 2-dimensional abdominal film (scout) using the Kruskal-Wallis test.
resultsThe intraclass correlation coefficient between 2 observers' measurements of rectal gas volume was 0.99 (P < .001). There were overall group differences in rectal gas volume and the maximal rectal gas transaxial area (both P < .001). The median rectal gas volume was higher in patients with rectal evacuation disorders (13.84 cm
conclusionsIn an analysis of patients with constipation, we found rectal gas volume, determined by abdominal CT imaging, to be greater in patients with than without rectal evacuation disorders.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.