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Related Concept Videos

Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

431
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:
431
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

374
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...
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Endoscopic Procedures I: Esophagogastroduodenoscopy01:29

Endoscopic Procedures I: Esophagogastroduodenoscopy

620
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.
During an EGD, the endoscope can be used to:
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Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

282
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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Lower GI Series: Barium Enema01:23

Lower GI Series: Barium Enema

942
A Barium Enema, or a lower GI series, is a specialized radiographic examination designed to visualize the lower gastrointestinal tract, specifically the colon and rectum. This procedure is instrumental in diagnosing various conditions such as colorectal cancer, polyps, diverticulosis, and inflammatory bowel disease.
Procedure Details
The examination begins by inserting a lubricated rectal tube into the patient's rectum to administer a radiopaque barium solution. The barium flow is carefully...
942
Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

522
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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Related Experiment Video

Updated: Dec 14, 2025

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

443

Unsedated Colonoscopy: Impact on Quality Indicators.

Fatima Khan1, Chin Hur2, Benjamin Lebwohl2,3,4

  • 1Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, 177 Fort Washington Avenue, New York, NY, 10032, USA. fak9026@nyp.org.

Digestive Diseases and Sciences
|July 23, 2020
PubMed
Summary
This summary is machine-generated.

Sedation for colonoscopy is linked to better adenoma detection and cecal intubation rates. While unsedated colonoscopy has benefits, sedation appears necessary for meeting current quality guidelines.

Keywords:
Adenoma detection rateCecal intubation rateColonoscopyOutcomesSedation-freeUnsedated

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Area of Science:

  • Gastroenterology
  • Clinical Endoscopy

Background:

  • Sedation is standard for colonoscopies in the USA, but data on outcomes without sedation are limited.
  • Colonoscopy can be performed without sedation, yet its effectiveness and patient characteristics are not well-documented.

Purpose of the Study:

  • To identify patient factors associated with undergoing unsedated colonoscopy.
  • To compare adenoma detection rate (ADR) and cecal intubation rate (CIR) between sedated and unsedated colonoscopies.

Main Methods:

  • A single-center electronic endoscopy database was used to analyze outpatient colonoscopies performed between 2011 and 2018.
  • Multivariable logistic regression identified factors associated with unsedated colonoscopy, CIR, and ADR.

Main Results:

  • Of 24,795 colonoscopies, only 0.7% were unsedated.
  • Sedated colonoscopies showed higher ADR (27.4% vs. 21.2%) and CIR (95.8% vs. 85.5%).
  • Male sex and suboptimal bowel prep were linked to unsedated procedures, while higher BMI showed an inverse association.

Conclusions:

  • Sedation significantly increases CIR and ADR, suggesting it's crucial for meeting current quality benchmarks.
  • Further research is needed to enhance unsedated colonoscopy through improved patient selection and quality metrics, considering its potential benefits.