Different Bowel Preparations in CT Colonography: is Diet Necessary? A Randomized Controlled Trial (DIETSAN)

May 11, 2017 updated by: Davide Bellini, University of Roma La Sapienza
The aim of this study is to compare a new regimen of reduced bowel preparation that does not include low fiber diet with another reduced bowel preparation including low-fiber diet.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Bowel preparation should be safe and well tolerated by patients, particularly in a screening setting. For this reason, limited bowel preparations have been extensively investigated. Usually, they combine the use of low-fibre diet and faecal/fluid tagging. The ingestion of a positive contrast agent (either barium, iodine or a combination of the two),needed to differentiate stool or fluid residues from true colonic lesions, is now considered mandatory. A low-fibre diet has the aim of improving residue homogeneity and facilitates tagging; however, there aren't significative evidences at support. The aim of this study is to compare a new regimen of reduced bowel preparation that does not include low fiber diet with another reduced bowel preparation including low-fiber diet. Primary outcome is the overall quality of bowel preparation.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
100

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Italy
      • Latina, Italy, 04100
        • ICOT Hospital, Sapienza

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

40 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Asymptomatic patients (Screening Patients)
  • Symptomatic patients unwilling to undergo optical colonoscopy (Symptomatic Patients)
  • Patients with a previous incomplete optical colonoscopy.

Exclusion Criteria:

  • Allergy to Macrogol
  • Cognitive behavioral deficits

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Diet included
Diet is included in bowel preparation
Procedure: Diet
A low-fibre diet for three days before the examination
Other Names:
  • diet included
Drug: Faecal Tagging
Oral ingestion of iodinated contrast media (Gastrografin 60 ml) 3h before the examination
Other Names:
  • iodinated contrast media (oral)
Drug: Bowel cleansing
Oral ingestion of water solution (macrogol 100 mg, Sanipeg) the day before the examination
Other Names:
  • chatartic bowel preparation
Procedure: CT colonography
CT Examination of the colon aimed to detect polyps and cancer
Other Names:
  • Virtual colonoscopy
Experimental: Diet not included
Diet is not included in bowel preparation
Drug: Faecal Tagging
Oral ingestion of iodinated contrast media (Gastrografin 60 ml) 3h before the examination
Other Names:
  • iodinated contrast media (oral)
Drug: Bowel cleansing
Oral ingestion of water solution (macrogol 100 mg, Sanipeg) the day before the examination
Other Names:
  • chatartic bowel preparation
Procedure: CT colonography
CT Examination of the colon aimed to detect polyps and cancer
Other Names:
  • Virtual colonoscopy

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
overall quality of bowel preparation using a 0-3 scale for each parameter (Homogeneity of solid-fluid fecal tagging, volume of residual fluid, colon distension).
Time Frame: 1 day
the evaluation of overall quality of bowel preparation on CT colonography images including: homogeneity of tagging, presence of unmarked solid stool residues, the evaluation of volume of residual fluids and colon distention.
1 day

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
compliance of patients
Time Frame: 1 day
A 0-10 visual analogical scale (VAS) was used with 0 corresponding to no discomfort and 10 to severe discomfort with severe impact on patient's daily activities. Intermediate values corresponded to intermediate values of tolerance.
1 day

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Roma La Sapienza

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Laghi Andrea, Professor, University of Rome "Sapienza" Faculty of Medicine and Dentistry Department of Radiological Sciences, Oncology and Pathology I.C.O.T. - Via F. Faggiana 34, 04100 Latina, Italy

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2015

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2016

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 19, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 24, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 25, 2015

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 12, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 11, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • URomLSDBAL1

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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