Effect of Water Exchange Method on Adenoma Miss Rates in Patients Undergoing Selective Polypectomy
25 août 2016 mis à jour par: Yanglin Pan, Air Force Military Medical University, China
Effect of Water Exchange Method on Adenoma Miss Rates in Patients Undergoing Selective Polypectomy: a Single-centered, Randomized Controlled Study
Patients with colorectal adenomas are suggested to receive polypectomy.
A substantial number of adenomas may be missed in patients with polyps found by previous colonoscopy.
And water exchange (WE) method may increase the detection of missed adenoma compared with traditional air insufflation (AI) colonoscopy.
The investigators aim to investigate whether water exchange colonoscopy method, compared with air insufflation method, can improve the detection of missed adenomas in patients undergoing selective polypectomy.
Aperçu de l'étude
Statut
Inconnue
Les conditions
Intervention / Traitement
Description détaillée
For WE method, the air pump was turned off for the full duration of insertion to avoid inadvertent air insufflations and colon elongation. Residual air in the lumen was suctioned to minimize angulations at flexures. Water at 37°C was infused with a pump (Olympus) through the biopsy channel to confirm correct tip orientation for scope advancement. The infused water was removed predominantly by suction when the colonoscope was smoothly advanced during the insertion phase, and turbid luminal water due to residual feces was exchanged by clean water until the lumen was clearly visualized. Occasionally, if it was difficult to determine whether the colonoscope tip was in the cecum, air was allowed to be insufflated for observation. If the position of the scope tip was confirmed to be not in the cecum, insufflated air would be removed by suction and the WE method would be continuously used until successful intubation.
For the AI method, water was not used, and air was insufflated during insertion.
Air was insufflated to distend the lumen for inspection and biopsy or polypectomy during withdrawal for both methods. Polyps will be removed by forceps biopsy (polyps size <3mm), cold snare technique (3-6mm) or endoscopic mucosal resection (size≥6mm).
Type d'étude
Interventionnel
Inscription (Anticipé)
450
Phase
- N'est pas applicable
Contacts et emplacements
Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.
Lieux d'étude
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Shaanxi
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Xi'an, Shaanxi, Chine, 710032
- Recrutement
- Endoscopic center, Xijing Hospital of Digestive Diseases
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Contact:
- Gui Ren, MD
- Numéro de téléphone: +862984771536
- E-mail: renguigz@hotmail.com
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Chercheur principal:
- Gui Ren, MD
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-
Critères de participation
Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.
Critère d'éligibilité
Âges éligibles pour étudier
18 ans à 80 ans (Adulte, Adulte plus âgé)
Accepte les volontaires sains
Non
Sexes éligibles pour l'étude
Tout
La description
Inclusion Criteria:
- Age 18-80 patients undergoing selective polypectomy
Exclusion Criteria:
- Polyps found more than 6 months
- Patients with polyposis syndrome or hereditary nonpolyposis colorectal cancer
- Patients with history of inflammatory bowel disease
- Patients with planning to undergo Endoscopic Submucosal Dissection(ESD)
- Patients not undergoing standard bowel preparation
- Patients with solid feces in the last stool after bowel preparation
- Patients considered to be high risk for bleeding during Endoscopic mucosal resection (EMR), e.g. using antiplatelet drugs (clopidogrel) within 5 days before the current colonoscopy
- Hemodynamically unstable
- Pregnant women
- Unable to provide informed consent
Plan d'étude
Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Seul
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: Water exchange (WE) method
Water exchange (WE) method was used for insertion to the cecum.
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Water exchange (WE) method was used for insertion to the cecum.
And air was insufflated to distend the lumen for inspection and biopsy or polypectomy during withdrawal procedure.
|
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Comparateur actif: Air insufflation (AI) method
Air insufflation (AI) method was used for insertion to the cecum.
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Air insufflation (AI) method was used for insertion to the cecum.
And air was insufflated to distend the lumen for inspection and biopsy or polypectomy during withdrawal procedure.
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Adenoma miss rate
Délai: 12 months
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Adenoma miss rate was calculated as the number of patients with one and more additional adenomas during polypectomy procedure divided by the total number of patients in each group.
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12 months
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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adenoma-level miss rate
Délai: 12 months
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Adenoma-level miss rate was calculated as the number of additional adenomas detected in polypectomy procedure divided by the total number of adenomas in each group.
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12 months
|
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Advanced adenoma miss rate/Miss advanced adenoma per colonoscopy
Délai: 12 months
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Advanced adenoma: any with 3 or more adenomas of any size, 1 or more large adenomas 1 cm, or 1 or more adenomas with villous architecture or highgrade dysplasia.
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12 months
|
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Adenoma per positive patient (APP)
Délai: 12 months
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The mean number of adenoma per positive patient
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12 months
|
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Quality of Bowel Preparation
Délai: 12 months
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The Boston Bowel Preparation Scale (BBPS): cleanliness of each part of the colon: 0=unprepared colon segment with mucosa not seen because of solid stool that cannot be cleared; 1=portion of mucosa of the colon segment seen, but other areas of the colon segment not well seen because of staining, residual stool, and/or opaque liquid; 2=minor amount of residual staining, small fragments of stool and/or opaque liquid, but mucosa of colon segment seen well; 3=entire mucosa of colon segment seen well with no residual staining, small fragments of stool, or opaque liquid.
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12 months
|
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Complication rate
Délai: 12 months
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Bleeding, perforation and others
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12 months
|
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Pain Scores on the Visual Analog Scale compared with previous colonoscopy
Délai: 12 months
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0 = no pain, to 10 = most severe pain
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12 months
|
Collaborateurs et enquêteurs
C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.
Publications et liens utiles
La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.
Publications générales
- Hewett DG, Rex DK. Cap-fitted colonoscopy: a randomized, tandem colonoscopy study of adenoma miss rates. Gastrointest Endosc. 2010 Oct;72(4):775-81. doi: 10.1016/j.gie.2010.04.030. Epub 2010 Jun 25.
- Veitch AM, Vanbiervliet G, Gershlick AH, Boustiere C, Baglin TP, Smith LA, Radaelli F, Knight E, Gralnek IM, Hassan C, Dumonceau JM. Endoscopy in patients on antiplatelet or anticoagulant therapy, including direct oral anticoagulants: British Society of Gastroenterology (BSG) and European Society of Gastrointestinal Endoscopy (ESGE) guidelines. Gut. 2016 Mar;65(3):374-89. doi: 10.1136/gutjnl-2015-311110.
- Ren G, Wang X, Luo H, Yao S, Liang S, Zhang L, Dong T, Chen L, Tao Q, Guo X, Han Y, Pan Y. Effect of water exchange method on adenoma miss rate of patients undergoing selective polypectomy: A randomized controlled trial. Dig Liver Dis. 2021 May;53(5):625-630. doi: 10.1016/j.dld.2020.11.012. Epub 2020 Dec 31.
Dates d'enregistrement des études
Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.
Dates principales de l'étude
Début de l'étude
1 août 2016
Achèvement primaire (Anticipé)
1 août 2017
Achèvement de l'étude (Anticipé)
1 août 2017
Dates d'inscription aux études
Première soumission
19 août 2016
Première soumission répondant aux critères de contrôle qualité
25 août 2016
Première publication (Estimation)
26 août 2016
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
26 août 2016
Dernière mise à jour soumise répondant aux critères de contrôle qualité
25 août 2016
Dernière vérification
1 août 2016
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- KY20162059-2
Plan pour les données individuelles des participants (IPD)
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INDÉCIS
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