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Spots Global Cancer Trial Database for Impacts of Inspection During Instrument Insertion on Colonoscopy Quality

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Trial Identification

Brief Title: Impacts of Inspection During Instrument Insertion on Colonoscopy Quality

Official Title: Impacts of Inspection During Instrument Insertion on Colonoscopy Quality: a Prospective Randomized Controlled Trial

Study ID: NCT03444090

Interventions

Colon polypectomy

Study Description

Brief Summary: Small colon polyps which are found during colonoscopy insertion are sometimes difficult to find during withdrawal and thus missed. The investigators aim to evaluate the differences of colon polyp/adenoma detection rates of patients undergoing additional inspection and polypectomy during insertion as compared to the patients undergoing traditional practice of careful inspection and polypectomy performed entirely during withdrawal of colonoscopy.

Detailed Description: Participants will be randomly assigned by a research assistant, by using a computer-generated randomization sequence to undergo colonoscopy with either inspection and polypectomy during both insertion and withdrawal of colonoscope (study group) or inspection and polypecotmy entirely during withdrawal of colonoscope (control group). Randomization will be done via concealed allocation with a sealed envelope that designate study group or control group. Colonoscopies will be performed by two experienced investigators by using a standard colonoscopy (CF-Q260AI or CF-Q260AL; Olympus Medical Systems Corp., Tokyo, Japan). All procedures are performed under moderate conscious sedation with fentanyl (United Biomedical, Taipei, Taiwan) and midazolam (Dormicum; Roche Pharmaceuticals, Basel, Switzerland) according to the current guidelines. Carbon dioxide insufflation is used for all endoscopic procedures. All participants receive 3-L polyethylene glycol (PEG; Klean-Prep, Helsinn Birex Pharmaceuticals Ltd., Dublin, Ireland) for bowel preparation. A split-dose of the PEG preparation is provided. The level of colon cleansing is prospectively evaluated with the Boston Bowel Preparation Scale score. For participants assigned into the study group, the colonic lumen is washed with saline and the fluid and debris are suctioned as the instrument is slowly inserted from rectum to cecum. Deliberate and systematic inspection of the colonic mucosa is performed with adequate luminal insufflations during both the insertion and withdrawal phases. Polyp size is determined by comparison with open colonoscopic biopsy forceps pushed against the polyp or, in some cases of pedunculated polyp by direct measurement after retrieval. Polyps with size \<10mm are removed as they are identified on insertion and withdrawal. Polyps with size ≥10mm are removed only during withdrawal. For participants assigned into the control group, deliberate mucosal inspection and polyp removal are performed exclusively on instrument withdrawal. During insertion, minimal mucosal inspection and insufflation are applied to efficiently advance the instrument into cecum. If a polyp is found during insertion, investigators are instructed to make a mental note of it and find it during withdrawal for polypectomy.

Keywords

Eligibility

Minimum Age: 45 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: Yes

Locations

Evergreen General Hospital, Taoyuan, , Taiwan

Contact Details

Name: Chiliang Cheng

Affiliation: Evergreen General Hospital

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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