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Related Concept Videos

Assessment of the Gastrointestinal System I: Subjective Data01:17

Assessment of the Gastrointestinal System I: Subjective Data

Assessing the gastrointestinal (GI) system is a complex process that begins with collecting subjective data. This data, collected through patient interviews, provides crucial insights into the patient's health history, perception patterns, and lifestyle habits, all contributing significantly to GI health.
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The initial step in assessing the GI system is obtaining a comprehensive health history. This includes inquiring about the patient's history or presence of problems related to...
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Assessment of the Gastrointestinal System II: Health Perception Pattern

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Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies

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An Esophagogastroduodenoscopy (EGD) is a diagnostic procedure in which an endoscopist uses a flexible, lighted endoscope to visualize the upper gastrointestinal (GI) tract. The procedure includes visualizing the oropharynx, esophagus, stomach, and the first part of the small intestine, the duodenum.
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Related Experiment Video

Updated: Jun 9, 2026

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The Toronto Upper Gastrointestinal Cleaning Score: a prospective validation study.

Rishad Khan1, Nikko Gimpaya2, Jose I Vargas3

  • 1Department of Medicine, University of Toronto, Toronto, Canada.

Endoscopy
|June 1, 2022
PubMed
Summary

A new scoring system, the Toronto Upper Gastrointestinal Cleaning Score (TUGCS), was developed to improve mucosal visualization during esophagogastroduodenoscopy (EGD). The TUGCS demonstrates strong validity and reliability for clinical use.

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Area of Science:

  • Gastroenterology
  • Medical Devices & Instrumentation
  • Clinical Assessment Tools

Background:

  • Assessing mucosal visualization during esophagogastroduodenoscopy (EGD) requires improvement.
  • A standardized scoring system is needed to enhance the assessment of mucosal visualization during EGD procedures.

Purpose of the Study:

  • To develop and validate the Toronto Upper Gastrointestinal Cleaning Score (TUGCS) for standardized assessment of mucosal visualization during EGD.

Main Methods:

  • The TUGCS was developed using Delphi methodology with international endoscopy experts.
  • Inter-rater and test-retest reliability were assessed using intraclass correlation coefficients (ICC).
  • Internal consistency was evaluated using Cronbach's alpha, and validity was assessed by comparing TUGCS ratings with global visualization ratings.

Main Results:

  • The TUGCS achieved consensus among 14 experts after three Delphi rounds.
  • High inter-rater reliability (0.79) and excellent test-retest reliability (0.83) were observed.
  • The TUGCS showed strong internal consistency (Cronbach's α = 0.81) and positive correlation with global visualization ratings (r=0.41, P=0.002).

Conclusions:

  • The Toronto Upper Gastrointestinal Cleaning Score (TUGCS) demonstrates strong validity and reliability in clinical settings.
  • The TUGCS has potential for widespread dissemination due to its development with an international group, diverse EGD indications, and minimal training requirements.