Colonoscopy
Colonoscopy - Related Videos
01:25
Endoscopic Procedures II: Colonoscopy
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2025
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: Ascending Colon: Rises upward on the right side of the abdomen. Transverse Colon: Stretches from the ascending colon across the body to the left side. Descending Colon: Travels...
07:06
Fecal Microbiota Transplantation via Colonoscopy for Recurrent C. difficile Infection
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Cited by 26 •
2014
Fecal Microbiota Transplantation via colonoscopy is a safe and effective treatment for recurrent and refractory C.difficile infection. A systematic approach to patient and donor screening, preparation of stool, and delivery of the stool during the colonoscopy will maximize therapeutic success.
01:26
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
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2025
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...
03:43
Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
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Cited by 1 •
2025
This study presents an effective approach to performing colonoscopies. Achieving success in this procedure involves ensuring thorough bowel preparation, carefully inserting the scope while minimizing air insufflation, and skillfully managing any looping of the instrument.
06:28
E-Patient Counseling Trial (E-PACO): Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy
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Cited by 3 •
2019
The aim of this trial is to establish the position of online computer-based education as a tool for patient preparation prior to a colonoscopy. Computer based education is compared with the standard of care, nurse counseling, evaluating endoscopic quality measures and patient related outcome measures.
FAQs
Air or carbon dioxide is used to expand the colon during the examination, helping the clinician view its lining on the monitor. This expansion is a procedural condition rather than a diagnostic result itself. The insufflation medium is part of how the endoscope creates an observable field for evaluating gastrointestinal disease.
Magnified images let the clinician inspect the colonic lining directly while the examination is underway. That visual information can help investigate gastrointestinal disease and identify lesions that may warrant instrument-based sampling or removal. Colonoscopy therefore combines real-time observation with actions performed through the same scope, rather than relying on tissue analysis alone.
Passing instruments through the scope allows selected lesions to be managed during the same examination. A clinician may remove a polyp or collect a biopsy, linking what is seen on the monitor with tissue-based diagnosis or immediate treatment. This combination makes the procedure clinically useful beyond observation and supports more than one clinical goal.
Bleeding and altered bowel habits are among the clinical findings that can prompt colonoscopy. In this setting, the examination is used to investigate possible gastrointestinal disease rather than solely to perform routine screening. The ability to inspect the rectum and entire colon gives clinicians a direct way to evaluate these symptom patterns and determine whether sampling or lesion removal is relevant.
Screening uses colonoscopy to support colorectal cancer prevention by examining the colon and enabling removal of selected polyps during the same examination. Its value therefore extends beyond identifying disease that is already suspected. By combining direct inspection with immediate management of certain lesions, the procedure connects screening with long-term disease prevention.
A lubricated, flexible, camera-equipped endoscope provides access and image capture, while a monitor displays magnified views for the clinician. Air or carbon dioxide can expand the colon, and instruments passed through the scope support polyp removal or biopsy. Together, these components connect visualization, sampling, and selected treatment in one clinical procedure.