NCT05553977

Brief Summary

The main purpose of the study is to design and validate a convolutional neural network (CNN) with the ability to discriminate between pictures of effluents with different qualities of bowel cleansing and in a second time to prospectively assess in a cohort of patients the agreement between the result of the last rectal effluent quality assessed by the CNN and the cleansing quality assessed during the colonoscopy assessed by a validated scale (Boston Bowel Preparation Scale, BBPS). Patients will be prepared with polyethylene glycol (PEG), PEG plus ascorbic acid (PEG-Asc) or sodium picosulfate-oxide magnesium solution (PS).

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
667

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Oct 2022

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

September 19, 2022

Completed
7 days until next milestone

First Posted

Study publicly available on registry

September 26, 2022

Completed
5 days until next milestone

Study Start

First participant enrolled

October 1, 2022

Completed
7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 20, 2023

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

May 30, 2023

Completed
Last Updated

January 18, 2023

Status Verified

January 1, 2023

Enrollment Period

7 months

First QC Date

September 19, 2022

Last Update Submit

January 13, 2023

Conditions

Keywords

Bowel cleansingColonoscopyConvolutional Neural Network

Outcome Measures

Primary Outcomes (2)

  • Effluent characteristics

    Effluent characteristics. Set of 4 pictures categorized in adequate preparation (clear liquid, clear liquid with lumps) and inadequate preparation (dark liquid, or dark liquid with solid particles). The concolutional Neural Network will be trained with effluent images and validated.

    1 year

  • Quality of bowel cleansing assessed by the Boston Bowel Preparation Scale

    Quality of bowel cleansing assessed by the Boston Bowel Preparation Scale. This scale goes from 0 (no preparation) to 3 points (excellent preparation) in the three segments of the colon (proximal, transverse and distal). The maximum score is 9 points

    1 years

Study Arms (1)

Consecutive patients for outpatient colonoscopy

The researchers will offer to participate in the study to patients scheduled for a colonoscopy who meet all the inclusion criteria and none of the exclusion criteria

Drug: Bowel preparation for colonoscopyProcedure: Colonoscopy

Interventions

one day liquid diet will be administered to every patient included in the study and: split-dose bowel preparation with 4 Liters of Polyethylene glycol solution, 2 Liters of PEG-Ascorbic acid or 2 Liters Picosulfate.

Consecutive patients for outpatient colonoscopy
ColonoscopyPROCEDURE

Colonoscopy will be performed to every patient included in the study

Consecutive patients for outpatient colonoscopy

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

The researchers will offer to participate in the study to patients scheduled for a colonoscopy who meet all the inclusion criteria and none of the exclusion criteria. The researchers will explain the purpose of the study and will ask to sign the informed consent. They will give verbal and written information.

You may qualify if:

  • Age \>18, to sign the informed consent,
  • Patients with indication of outpatient colonoscopy
  • Patients ingesting the bowel preparation

You may not qualify if:

  • Incomplete colonoscopy (except for poor bowel preparation)
  • Contraindication for colonoscopy
  • Allergies.
  • Refusal to participate in the study or impairment to sign the informed consent.
  • Colectomy (more than 1 segment)
  • Dementia with difficulty in the intake of the preparation

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Department of Gastroenterology

San Cristóbal de La Laguna, S/C de Tenerife, 38320, Spain

RECRUITING

Related Publications (5)

  • Mori Y, Misawa M, Kudo SE. Challenges in artificial intelligence for polyp detection. Dig Endosc. 2022 May;34(4):870-871. doi: 10.1111/den.14279. Epub 2022 Mar 22. No abstract available.

  • Berzin TM, Parasa S, Wallace MB, Gross SA, Repici A, Sharma P. Position statement on priorities for artificial intelligence in GI endoscopy: a report by the ASGE Task Force. Gastrointest Endosc. 2020 Oct;92(4):951-959. doi: 10.1016/j.gie.2020.06.035. Epub 2020 Jun 19.

  • Fatima H, Johnson CS, Rex DK. Patients' description of rectal effluent and quality of bowel preparation at colonoscopy. Gastrointest Endosc. 2010 Jun;71(7):1244-1252.e2. doi: 10.1016/j.gie.2009.11.053. Epub 2010 Apr 1.

  • Alzubaidi L, Zhang J, Humaidi AJ, Al-Dujaili A, Duan Y, Al-Shamma O, Santamaria J, Fadhel MA, Al-Amidie M, Farhan L. Review of deep learning: concepts, CNN architectures, challenges, applications, future directions. J Big Data. 2021;8(1):53. doi: 10.1186/s40537-021-00444-8. Epub 2021 Mar 31.

  • Harewood GC, Wright CA, Baron TH. Assessment of patients' perceptions of bowel preparation quality at colonoscopy. Am J Gastroenterol. 2004 May;99(5):839-43. doi: 10.1111/j.1572-0241.2004.04176.x.

MeSH Terms

Interventions

Colonoscopy

Intervention Hierarchy (Ancestors)

Endoscopy, GastrointestinalEndoscopy, Digestive SystemDiagnostic Techniques, Digestive SystemDiagnostic Techniques and ProceduresDiagnosisEndoscopyDiagnostic Techniques, SurgicalDigestive System Surgical ProceduresSurgical Procedures, OperativeMinimally Invasive Surgical Procedures

Central Study Contacts

Antonio Z Gimeno García, MD, PhD

CONTACT

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 19, 2022

First Posted

September 26, 2022

Study Start

October 1, 2022

Primary Completion

April 20, 2023

Study Completion

May 30, 2023

Last Updated

January 18, 2023

Record last verified: 2023-01

Locations