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Related Concept Videos

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...
Lower GI Series: Barium Enema01:23

Lower GI Series: Barium Enema

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
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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:
Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

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, unexplained...
Endoscopic Procedures V: ERCP01:26

Endoscopic Procedures V: ERCP

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.
Patient...
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.
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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...

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Updated: Jun 10, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
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Published on: July 11, 2025

Bowel Preparation Outcomes Using Low-Volume Polyethylene Glycol With Selective Rescue Enema in Pediatric Colonoscopy.

Tomohiro Ida1, Hayato Yamaguchi1,2, Masakatsu Fukuzawa1

  • 1Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan.

Pediatrics International : Official Journal of the Japan Pediatric Society
|June 9, 2026
PubMed
Summary

Reduced-volume polyethylene glycol (PEG) with rescue enemas ensures effective pediatric bowel preparation for colonoscopy. This approach improves cleansing adequacy despite challenges with high-volume PEG tolerance in children.

Keywords:
bowel preparationenemapediatric colonoscopypolyethylene glycolvomiting

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Area of Science:

  • Pediatric Gastroenterology
  • Endoscopy Procedures
  • Gastrointestinal Motility

Background:

  • Pediatric colonoscopy preparation is difficult due to poor tolerance of high-volume polyethylene glycol (PEG).
  • Investigating reduced-volume PEG and rescue enemas for improved bowel cleansing in children.

Purpose of the Study:

  • To evaluate the effectiveness of reduced-volume PEG in pediatric bowel preparation.
  • To assess the clinical utility of rescue enemas for incomplete PEG ingestion.

Main Methods:

  • Retrospective review of 158 pediatric patients (≤15 years) undergoing colonoscopy.
  • Analysis of demographics, PEG volume, vomiting, taste intolerance, and enema use.
  • Bowel cleanliness assessed using Boston (BBPS) and Ottawa Bowel Preparation Scales (OBPS).

Main Results:

  • Reduced-volume PEG (37.9 mL/kg) achieved 98.1% cleansing adequacy (BBPS ≥6).
  • Vomiting (11.4%) and taste intolerance (42.4%) were noted; younger age and taste intolerance increased vomiting risk.
  • Rescue enemas were used in 48.7% of patients, maintaining adequate cleansing despite incomplete PEG intake.

Conclusions:

  • Low-volume PEG is effective for pediatric bowel cleansing.
  • Rescue enemas are practical for managing incomplete PEG intake.
  • Optimizing PEG tolerability and using rescue measures are crucial for pediatric bowel preparation.