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Related Concept Videos

Gastrointestinal Motility Disorders01:20

Gastrointestinal Motility Disorders

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Gastrointestinal or GI motility disorders are characterized by irregular gastrointestinal tract movements, disrupting food transit from the mouth to the anus. They are caused by damage or dysfunction in gut muscles or nerves. These disorders can cause symptoms such as severe constipation, diarrhea, abdominal pain, and swallowing difficulties. Disorders can affect any segment of the GI tract and range widely in severity, from common conditions like GERD to life-threatening conditions like...
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Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists01:23

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Serotonin, a crucial neurotransmitter synthesized by enterochromaffin cells, plays a cardinal role in regulating gastrointestinal (GI) motility. With over 90% of the body's total serotonin in the GI tract, its influence on digestive processes is profound. Serotonin is swiftly released upon various stimuli, such as food boluses or certain drugs, triggering intrinsic sensory neurons in the myenteric plexus and extrinsic vagal and spinal sensory neurons. This leads to the activation of the...
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Gastric Motility01:16

Gastric Motility

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Gastric motility is the coordinated contraction and relaxation of stomach muscles that convert ingested food into chyme, a semi-liquid substance ready for further digestion in the intestines. The process begins with the vagus nerve inducing the relaxation of the smooth muscles in the fundus and body of the stomach, allowing these regions to expand and accommodate up to approximately 1.5 liters of food and liquid.
Peristaltic Waves and Chyme Formation
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Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

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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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Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists01:28

Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists

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Prokinetic agents are specialized medications that stimulate gastrointestinal (GI) motility, promoting food movement through the GI tract. Dopamine, an inhibitory neurotransmitter, plays a significant role in this process, reducing GI motility and indirectly controlling the speed of digestion. Dopamine receptor antagonists, such as metoclopramide and domperidone, offer a unique advantage as prokinetic agents. By blocking the dopamine receptors, these drugs increase GI motility, improving food...
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Chronic Bowel Disorders: Introduction01:17

Chronic Bowel Disorders: Introduction

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Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
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Gut Motility Issues in Critical Illness.

Robert W Taylor1

  • 1Department of Critical Care Medicine, Mercy Hospital St. Louis, Suite 4006B, St Louis, MO 63141, USA.

Critical Care Clinics
|March 27, 2016
PubMed
Summary

Acute gastrointestinal injury (AGI) is a common critical illness complication. Standardizing AGI definitions is crucial for clarity and consistent research in intensive care medicine.

Keywords:
Acute gastrointestinal injuryGastrointestinal dysmotilityGastrointestinal symptomsIleusIntra-abdominal hypertensionPrevalence of acute gastrointestinal injury

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Area of Science:

  • Critical Care Medicine
  • Gastroenterology
  • Clinical Definitions

Background:

  • Acute gastrointestinal injury (AGI) frequently complicates critical illness, adversely impacting patient outcomes.
  • Diverse and inconsistent definitions of AGI have historically caused clinical confusion and hindered inter-institutional research comparisons.
  • A high index of suspicion is necessary due to the varied signs and symptoms, often making AGI detection challenging.

Purpose of the Study:

  • To standardize definitions for acute gastrointestinal injury (AGI) in critically ill patients.
  • To provide an evidence-based understanding of AGI pathophysiology and management.
  • To address the clinical confusion stemming from varied AGI diagnostic criteria.

Main Methods:

  • Convening an international working group under the European Society of Intensive Care Medicine.
  • Reviewing existing literature on AGI pathophysiology and clinical presentation.
  • Developing consensus-based, standardized definitions for AGI.

Main Results:

  • Established standardized definitions for acute gastrointestinal injury (AGI).
  • Provided a comprehensive overview of current evidence on AGI.
  • Highlighted the need for a unified approach to AGI diagnosis and management.

Conclusions:

  • Standardized AGI definitions are essential for improving clinical practice and research.
  • A clear understanding of AGI pathophysiology and management is critical for better patient outcomes.
  • The European Society of Intensive Care Medicine's initiative aims to resolve diagnostic ambiguity in critical care settings.