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Related Concept Videos

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

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This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and...
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Endoscopic Procedures II: Colonoscopy01:25

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The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
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Endoscopic Procedures III: Video Capsule Endoscopy01:28

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Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers,...
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Introduction
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Assessment of the Rectum and Anus01:25

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Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
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Data Collection III01:05

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The physical assessment examines the patient for objective data that defines the patient's condition, and aids in formulating the nursing care plan. The purpose of physical assessment is a health status appraisal, which includes identifying health problems, and establishing a database for nursing intervention.
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Related Experiment Video

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Think-Aloud Testing of a Companion App for Colonoscopy Exams: Usability Study.

Christine Jacob1, Roman Müller1, Sonja Schüler1

  • 1FHNW University of Applied Sciences and Arts Northwestern Switzerland, Riggenbachstrasse 16, Olten, CH.

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Summary

A prototype app for colonoscopy preparation shows high usability and participant interest. Key improvements include reminders and personalized content to enhance the colonoscopy experience and potentially reduce repeat procedures.

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Area of Science:

  • Medical Informatics
  • Digital Health
  • Gastroenterology

Background:

  • Colonoscopies are crucial for detecting and managing colorectal conditions, but up to 25% fail due to inadequate bowel preparation.
  • Poor colonoscopy preparation leads to increased procedure time, repeat examinations, patient inconvenience, and higher healthcare costs.
  • eHealth tools offer a promising avenue to improve bowel preparation adherence and potentially mitigate the need for repeat colonoscopies.

Purpose of the Study:

  • To evaluate the usability and user experience of a prototype companion mobile application designed to assist patients with colonoscopy preparation.
  • To identify specific strengths and weaknesses of the app's design and content through user feedback.
  • To gather insights for refining the application to maximize its effectiveness in supporting patients undergoing colonoscopy.

Main Methods:

  • A qualitative usability study was conducted from February to August 2024, employing the think-aloud (TA) procedure.
  • Participants engaged in 6 predefined tasks followed by a semi-structured interview to capture their experiences.
  • Quantitative usability metrics were analyzed using Microsoft Excel, while qualitative data were thematically coded and analyzed.

Main Results:

  • Seventeen smartphone users participated, rating the app highly for ease of use (mean 4.29/5), usefulness (mean 4.53/5), and comprehensibility (mean 4.29/5).
  • Individual feature ratings for ease of use, usefulness, and comprehensibility were consistently positive, ranging from 4.00 to 4.82 on a 5-point scale.
  • 100% of participants expressed willingness to use the app for future colonoscopies, emphasizing the need for reminders, tailored content, simplified language, and visual aids.

Conclusions:

  • The prototype colonoscopy companion app demonstrated strong usability and positive user reception.
  • Usability testing effectively identified areas for improvement, with push notifications and personalized content emerging as key priorities.
  • Further development focusing on these user-identified features and subsequent real-world studies are recommended to optimize the app's potential in improving colonoscopy preparation and outcomes.