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Spots Global Cancer Trial Database for 3-day vs. 1-day Low Residue Diet Influence in Colonoscopy Preparation and Patient Tolerability

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Trial Identification

Brief Title: 3-day vs. 1-day Low Residue Diet Influence in Colonoscopy Preparation and Patient Tolerability

Official Title: A 3-day Versus 1-day Low Residue Diet to Improve Colonoscopy Preparation Result and Patient Tolerability: A Prospective, Randomized, Single-blinded, Controlled Trial

Study ID: NCT02955901

Study Description

Brief Summary: Colonoscopy is one of the most common methods for the diagnosis and treatment of lower gastrointestinal tract diseases and provides a unique opportunity to identify early neoplastic lesions. Adequate bowel preparation is important for optimal colonoscopy. New bowel-cleansing regimens, study of patient-related risk factors to fail a proper preparation and diet adaptations have been studied recently. A low residue diet is the standard in the day before the colonoscopy. Some endoscopists prescribe this dietary plan for a 3-day period prior to the exam, although no study compared the recommended 1-day versus 3-day diet regime, or the influence in bowel preparation results. The aim of this project is to determine if the use of a 3-day low residue diet improves bowel preparations results and the influence in patient tolerability and adherence.

Detailed Description: a. Study type: prospective, randomized, single-blinded trial: i. Prospective inclusion of ambulatory patients; ii. Randomization by computer generated tables; iii. Allocation concealment by sealed, opaque envelopes; iv. Patient not blinded to diet; v. Endoscopist blinded to the diet followed by each patient. b. Patient selection: Consecutive series of patients scheduled for total colonoscopy; Exclusion criteria: inpatients, sedation, urgent procedures, colonoscopies not intended to reach the caecum, patient with previous partial colectomy. c. Sample Size: i. 412 individuals; 2 groups of 206 patients ii. Primary goal: to achieve a reduction from 15 to 5% of inappropriate preparation result; The Boston Bowel Preparation Scale (BBPS) will be used as grading system. Inappropriate is defined as total BBPS \< 6 or \< 2 in any segment. The chosen scale is the most systematically validated and appropriate for the clinical setting. iii.Both groups, from a community-based outpatient ambulatory center, used the same split dose regimen with Polyethylene glycol (PEG).Patients were instructed to drink 3 L of PEG preparation on the afternoon of the day prior to the exam and 1 L four hours before the scheduled exam time. All the exams scheduled for morning period. Assuming a normal distribution, a power of 90% and a type I error of 0.05, the calculated sample size for each group was 188; allowing a 10% dropout rate, the sample size is 206 per group (412 patients overall); Groups: Group A: 3-day low residue diet + split dose preparation; Group B: 1-day low residue diet + split dose preparation d. Endoscopist: Exams to be conduct by 5 board-certified gastroenterologists and 2 supervised fellows in training; All physicians were trained in the use of BBPS by online training available at http://cori.org/bbps/, and have been using the BBPS for at least 3 months. e. Data collection methods: form sheet filled by the endoscopist and patient opinion regarding the assigned bowel preparation protocol. f. Analyzed variables: i. Primary outcome: BBPS score ii. Secondary outcome: Patient assessment of tolerance and acceptance of the preparation and diet iii. Tertiary outcome: polyp detection rate (PDR), polyp location, size and configuration; adenoma detection rate (ADR), cecum intubation rate iv. Other variables and patients characteristics (age, gender, chronic medication, risk factors for inappropriate preparation), withdrawal time. g. Statistical analysis: T-test for groups comparing quantitative variables with normal distribution (primary outcome); Qui square test for groups comparing proportions (secondary and tertiary outcomes)

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: Yes

Locations

Portuguese Oncology Institute - Coimbra, Coimbra, , Portugal

Contact Details

Name: Filipe Taveira, MD

Affiliation: Portuguese Oncology Institute, Coimbra

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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