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Related Concept Videos

Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

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

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

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 solid...
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
Observational Studies01:11

Observational Studies

Observational studies are a type of analytical study where researchers observe events without any interventions. In other words, the researcher does not influence the response variable or the experiment's outcome.
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One example of...
Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

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.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Endoscopic Studies I: Bronchoscopy and Thoracoscopy01:30

Endoscopic Studies I: Bronchoscopy and Thoracoscopy

Endoscopy is a non-surgical medical technique used to examine a person's internal organs and vessels. This lesson will focus on two types of endoscopic studies: bronchoscopy and thoracoscopy.
Bronchoscopy
Description
Bronchoscopy is a procedure that involves direct visualization of the larynx, trachea, and bronchi for diagnostic and therapeutic purposes. A flexible fiber optic or rigid bronchoscope is used to carry out the procedure. The fiber-optic bronchoscope is more frequently used due to...

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Related Experiment Video

Updated: Jul 13, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
03:43

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists

Published on: July 11, 2025

Colonoscopy and flexible sigmoidoscopy practice patterns in Ontario: a population-based study.

Susan E Schultz1, Chris Vinden, Linda Rabeneck

  • 1Institute for Clinical Evaluative Sciences, Toronto, Canada.

Canadian Journal of Gastroenterology = Journal Canadien De Gastroenterologie
|July 20, 2007
PubMed
Summary

Colonoscopy and flexible sigmoidoscopy rates in Ontario are low. A significant portion of physicians performing these large bowel endoscopic procedures have low patient volumes, indicating potential gaps in service provision.

More Related Videos

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
15:49

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Published on: October 16, 2013

Related Experiment Videos

Last Updated: Jul 13, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
03:43

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists

Published on: July 11, 2025

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
15:49

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Published on: October 16, 2013

Area of Science:

  • Gastroenterology
  • Public Health
  • Health Services Research

Background:

  • Large bowel endoscopic procedures, including colonoscopy and flexible sigmoidoscopy, are crucial for colorectal cancer screening and diagnosis.
  • Understanding the provision and utilization of these services is essential for optimizing population health outcomes.

Purpose of the Study:

  • To assess population-based rates of colonoscopy and flexible sigmoidoscopy in Ontario.
  • To analyze the volume and types of physicians performing these large bowel endoscopic procedures.

Main Methods:

  • Population-based study utilizing data from the Ontario Health Insurance Plan, Institute for Clinical Evaluative Sciences Physicians Database, and Statistics Canada.
  • Calculation of flexible sigmoidoscopy and colonoscopy rates per 10,000 individuals (aged 50-74) by region.
  • Analysis of physician types and procedure volumes between April 1, 2001, and March 31, 2002.

Main Results:

  • In 2001/2002, 172,108 colonoscopies and 43,400 flexible sigmoidoscopies were performed in Ontario.
  • Colonoscopy rates were approximately five times higher than flexible sigmoidoscopy rates, with regional variations observed (e.g., 463.1/10,000 in the north vs. 286.8/10,000 in the east).
  • Gastroenterologists performed more procedures per physician, but general surgeons performed a similar total number of procedures due to their larger numbers.

Conclusions:

  • Population-based rates for colonoscopies and flexible sigmoidoscopies in Ontario were found to be low.
  • Approximately one-quarter of physicians performing these large bowel endoscopic procedures had low procedure volumes, suggesting potential underutilization or access issues.