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Related Concept Videos

Endoscopic Procedures I: Esophagogastroduodenoscopy01:29

Endoscopic Procedures I: Esophagogastroduodenoscopy

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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.
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Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

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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.
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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 V: ERCP01:26

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Endoscopic Retrograde Cholangiopancreatography (ERCP) is a diagnostic procedure that combines endoscopy and fluoroscopy to diagnose and treat conditions related to the bile ducts, pancreatic ducts, and gallbladder. This procedure is beneficial for identifying and addressing blockages, gallstones, strictures, and tumors within the biliary or pancreatic systems. ERCP is both diagnostic and therapeutic, offering the ability to visualize and treat identified problems in one session.
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Endoscopic Studies II: Thoracocentesis01:26

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Thoracentesis(Thoracocentesis), commonly known as pleural tap, is a medical procedure where a 22 gauge needle is inserted into the pleural space, the area between the lung and chest wall. This procedure is commonly performed to diagnose or treat various respiratory disorders.
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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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Related Experiment Video

Updated: Mar 7, 2026

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
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Stray energy transfer during endoscopy.

Edward L Jones1, Amin Madani2, Douglas M Overbey3

  • 1Department of Surgery, The University of Colorado and The Denver VAMC, 1055 Clermont St, #112, Denver, CO, 80220, USA. edward.jones@UCDenver.edu.

Surgical Endoscopy
|February 17, 2017
PubMed
Summary
This summary is machine-generated.

Stray energy transfer occurs during endoscopic procedures, increasing complication risks. Lowering power, using low-voltage modes, and impedance-monitoring generators can mitigate these risks.

Keywords:
ComplicationCouplingEndoscopyImpedancePolypectomyStray energy

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Area of Science:

  • Gastroenterology
  • Endoscopic Surgery
  • Biomedical Engineering

Background:

  • Endoscopy is crucial for gastrointestinal evaluation and treatment.
  • Energy devices significantly increase complication risks during endoscopy.
  • The mechanisms of stray energy and associated injuries remain unclear.

Purpose of the Study:

  • To investigate stray energy transfer during endoscopic procedures.
  • To identify strategies for minimizing energy-related complications.

Main Methods:

  • A pig model was used to simulate endoscopic procedures.
  • Stray energy was quantified by measuring tissue temperature changes near the endoscope tip.
  • Variables included endoscope orientation, energy device, power, mode, and generator type.

Main Results:

  • Stray energy transfer, indicated by significant temperature increases, was observed, particularly near the camera lens.
  • Reducing power output and using low-voltage modes decreased stray energy transfer.
  • An impedance-monitoring generator substantially reduced stray energy compared to a standard generator.

Conclusions:

  • Stray energy transfer within the endoscope is a risk during energy device activation.
  • This phenomenon can lead to unseen complications like bleeding or perforation.
  • Strategies such as power reduction, low-voltage modes, and impedance monitoring can enhance safety.