ArticleNeurogastroenterology and motility2017
Rectal gas volume: Defining cut-offs for screening for evacuation disorders in patients with constipation.
Article in Neurogastroenterology and motility, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
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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.
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Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.
- Pretest and Post-test Probabilities of Diagnoses of Rectal Evacuation Disorders Based on Symptoms, Rectal Exam, and Basic Tests: a Systematic Review.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2020Pooled it
- Association Between CT-Based Rectal Stool Attenuation and Activities of Daily Living in Hospitalized Older Adults.Geriatrics & gerontology international · 2026Article
- The fixel GI Parkinson's research and integrated support model (PRISM).Journal of Parkinson's disease · 2025Article
- 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
- Management of functional constipation in children and adults.Nature reviews. Gastroenterology & hepatology · 2020Review
- What's in the pipeline for lower functional gastrointestinal disorders in the next 5 years?American journal of physiology. Gastrointestinal and liver physiology · 2019Review
- Audit of the diagnosis of rectal evacuation disorders in chronic constipation.Neurogastroenterology and motility · 2019Article
- Recent advances in understanding and managing chronic constipation.F1000Research · 2018Review
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
backgroundDiagnosis of rectal evacuation disorders (RED) is currently based on anorectal manometry (ARM) and evacuation tests in specialized laboratories; we recently showed higher rectal gas volume (RGV) and maximum rectal gas transaxial area (MRGTA) measured on abdominal and pelvic computed tomography (CT) in patients with documented RED.The aim of this study was to obtain cut-off values of RGV, MRGTA, and rectal area on scout film (RASF) to differentiate constipated patients with RED from those without RED, based on ARM, balloon expulsion test (BET), and colon transit test.
methodsWe identified 118 constipated patients (65 with RED) with prior record of CT. Using standard CT software, we used a variable region of interest (ROI) program to measure RGV, MRTGA, and RASF, as previously described. We constructed receiver operating characteristics curves based on different values, and we estimated AUC, specificity, and positive predictive value (PPV) to detect RED in patients with constipation. KEY
resultsReceiver operating characteristics of the models to predict RED showed AUC 0.751 for RGV and 0.737 for MRGTA (both P<.001), and 0.623 for RASF (P=.029). At specificity of 90%, RGV of 30 mL had a PPV 77.3%, MRGTA of 10 cm CONCLUSIONS & INFERENCES: Rectal gas measurements on abdominal imaging may indicate RED in patients with constipation. At ~90% specificity for RED, RGV of 20 or 30 mL or MRGTA of 10 cm
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