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Related Concept Videos

Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

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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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Chronic Bowel Disorders: Introduction01:17

Chronic Bowel Disorders: Introduction

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Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
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Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
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Inflammatory Bowel Disease I: Ulcerative Colitis01:27

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Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
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Surgical interventions for inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, are essential in managing symptoms and addressing complications. The selection of surgical procedures is contingent upon the specific conditions and complications that stem from these illnesses.
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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.
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Related Experiment Video

Updated: Feb 14, 2026

E-Patient Counseling Trial E-PACO: Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy
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Update on Bowel Preparation for Colonoscopy.

Cristina C Rutherford1, Audrey H Calderwood2

  • 1Department of Medicine, Section of Gastroenterology & Hepatology, Dartmouth Hitchcock Medical Center, Lebanon, NH, USA.

Current Treatment Options in Gastroenterology
|February 7, 2018
PubMed
Summary
This summary is machine-generated.

Optimizing colonoscopy preparation is key for colorectal cancer screening and polyp detection. Evolving regimens and patient-centered approaches improve bowel cleansing success, though 10-25% still face inadequate preparation.

Keywords:
Bowel preparationColonoscopyPolyethylene glycolQuality

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Area of Science:

  • Gastroenterology
  • Endoscopy
  • Colorectal Cancer Screening

Background:

  • Colonoscopy is crucial for diagnosing colon and terminal ileum conditions and preventing colorectal cancer.
  • Adequate bowel cleansing is vital for effective colon visualization and polyp detection.

Purpose of the Study:

  • To review current practices and evolving recommendations for colonoscopy bowel preparation.
  • To highlight the importance of adequate cleansing for successful colonoscopy outcomes.

Main Methods:

  • Review of existing literature on various colonoscopy preparation regimens.
  • Discussion of patient factors influencing preparation quality.
  • Introduction of scoring systems for assessing bowel preparation.

Main Results:

  • Lower-volume polyethylene glycol preparations and split-dose regimens are increasingly preferred.
  • Despite advancements, 10-25% of patients experience inadequate colon cleansing.
  • The Boston Bowel Preparation Scale (BBPS) is recommended for evaluating cleansing quality.

Conclusions:

  • Optimizing bowel preparation requires a patient-centered approach, considering individual factors and preferences.
  • Dietary liberalization and refined preparation timing/volume are future directions.
  • Repeat examinations and aggressive regimens are necessary for inadequate preparations.