Bowel Preparation for Repeat Colonoscopy After Preparation Failure (RepeatPrep Study)

Nurse-led Educational Telephone Intervention for Bowel Preparation for Repeat Colonoscopy After Preparation Failure (RepeatPrep Study)

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03055689

Enrollment

657

Registered

2017-02-16

Start date

2017-01-30

Completion date

2018-12-25

Last updated

2019-04-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bowel Preparation for Colonoscopy

Keywords

Colonoscopy, Educational intervention

Brief summary

This trial will evaluate the efficacy in colon cleansing of a nurse-led educational telephone intervention 24-48 hours before a colonoscopy, in selected participants with a previous inadequate bowel preparation.

Interventions

BEHAVIORALEducational telephone intervention

Subjects will receive a nurse-led educational telephone intervention for bowel preparation 24-48 hours before the colonoscopy

BEHAVIORALStandard education for colonoscopy

Standard education for bowel preparation at the time of colonoscopy scheduling

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

SUPPORTIVE_CARE

Masking

SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to 85 Years

Healthy volunteers

Inclusion criteria

* Consecutive patients with a colonoscopy with inadequate bowel preparation, for any indication and where the endoscopist considers that the colonoscopy should be repeated to optimize the visualization with a better bowel preparation. Participants must have been properly informed and they have to sign the inform consent.

Exclusion criteria

* Hospitalized patients * Unwillingness to participate in the study * Inability to follow instructions: cognitive impairment or language barrier * Inability to use a telephone or not owning a telephone * Active inflammatory bowel disease * Severe renal impairment * Pregnancy of breast feeding

Design outcomes

Primary

Measure	Time frame	Description
Adequate bowel cleansing for colonoscopy	At the moment of colonoscopy	The efficacy of bowel preparation will be rated by blinded endoscopists using the Boston Bowel Preparation Scale (BBPS). Adequate bowel cleansing will be defined as a BBPS of 2 or more points in every segment of the colon and inadequate bowel cleansing will be defined by at least one of the colon segments with less than 2 points.

Secondary

Measure	Time frame	Description
Overall adenoma detection rate, as defined by the ratio of patients with at least one adenoma in the overall colon	At the moment of colonoscopy	The ratio of patients with at least one adenoma in the overall colon
Adenoma detection rate in the right colon	At the moment of colonoscopy	Ratio of patients with at least one adenoma in the right colon (proximal to the splenic flexure)
Overall serrated lesion detection rate	At the moment of colonoscopy	Ratio of patients with at least one serrated lesion in the overall colon
Serrated lesion detection rate in the right colon	At the moment of colonoscopy	Ratio of patients with at least one serrated lesion in the right colon (proximal to the splenic flexure)
Complete colonoscopy rate	At the moment of colonoscopy	Ratio of successful complete colonoscopies (cecal intubation or in case of previous surgery, ileocolic anastomosis)
Boston Bowel Preparation Scale	At the moment of colonoscopy	Application of the Boston Bowel Preparation Scale to evaluate colonoscopy bowel cleansing
Barcelona Bowel Preparation Scale	At the momento of colonoscopy	Application of the Barcelona Bowel Preparation Scale to evaluate colonoscopy bowel cleansing

Countries

Spain

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026