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Related Concept Videos

Drugs for Treatment of Constipation-Predominant IBS01:21

Drugs for Treatment of Constipation-Predominant IBS

Pharmacological therapies for IBS-C are designed to alleviate abdominal discomfort and enhance bowel function. In patients with IBS-C, fiber supplements may help soften stools and decrease straining, but may also lead to increased gas production and bloating. Osmotic laxatives like milk of magnesia are frequently used to soften stools and increase stool frequency in IBS-C patients. In addition, two drugs approved for use in severe IBS-C adult cases are linaclotide (Linzess) and lubiprostone...
Assessment of the Gastrointestinal System I: Subjective Data01:17

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Assessing the gastrointestinal (GI) system is a complex process that begins with collecting subjective data. This data, collected through patient interviews, provides crucial insights into the patient's health history, perception patterns, and lifestyle habits, all contributing significantly to GI health.
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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.
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Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation01:30

Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation

Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation
Irritable Bowel Syndrome (IBS) is classified into subtypes based on the predominant bowel habits as determined by the Bristol Stool Form Scale (BSFS). The subtypes are:
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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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.
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Related Experiment Video

Updated: Jun 30, 2026

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
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Manometric evaluation of constipation--Part I

S S Rao1

  • 1Department of Internal Medicine, University of Iowa College of Medicine, Iowa City, USA.

The Gastroenterologist
|September 1, 1996
PubMed
Summary
This summary is machine-generated.

Anorectal function tests are now essential for diagnosing and treating constipation. Multiple tests are needed to understand this complex defecation disorder.

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Area of Science:

  • Gastroenterology
  • Colorectal Surgery
  • Physiology

Background:

  • Anorectal function testing has advanced significantly, becoming crucial for understanding defecation disorders.
  • Constipation is a complex condition requiring comprehensive assessment rather than a single diagnostic method.

Purpose of the Study:

  • To highlight the evolution and clinical utility of anorectal function tests.
  • To emphasize the importance of a multi-test approach for diagnosing heterogeneous defecation disorders like constipation.

Main Methods:

  • Review of established and emerging diagnostic tools for defecation disorders.
  • Discussion of anorectal manometry, colon transit study, simulated defecation tests, and defecography.
  • Emphasis on evaluating rectal/anal pressures, sensation, reflexes, and functional morphology.

Main Results:

  • Anorectal function tests provide detailed pathophysiological insights into constipation.
  • These tests offer more information on gastrointestinal motor function than other methods.
  • Challenges remain, including the lack of uniform criteria for manometric abnormalities.

Conclusions:

  • Anorectal function tests are indispensable for modern diagnosis and treatment of constipation.
  • There is an urgent need for international standards in manometric techniques and diagnostic criteria.
  • Continued advancements in knowledge and experience are driving innovative diagnostic and therapeutic strategies.