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Related Concept Videos

Gastrointestinal Motility Disorders01:20

Gastrointestinal Motility Disorders

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...
Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists01:28

Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists

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...
Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists01:23

Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists

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...
Drugs Affecting GI Tract Motility: Other Laxatives01:20

Drugs Affecting GI Tract Motility: Other Laxatives

Laxatives are primarily used to alleviate constipation, a common gastrointestinal disorder characterized by infrequent bowel movements and difficulty passing stools. They work by various mechanisms to increase the volume or frequency of bowel movements. The primary modes of action of laxatives include increasing stool bulk, softening the stool, stimulating intestinal motility, and osmotically drawing water into the intestines.
Osmotic or saline laxatives, like magnesium hydroxide or milk of...
Gastric Motility01:16

Gastric Motility

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
Upon food entry, the stomach initiates...
Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...

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Related Experiment Video

Updated: Jul 9, 2026

Gastrointestinal Motility Monitor (GIMM)
08:15

Gastrointestinal Motility Monitor (GIMM)

Published on: December 1, 2010

Gastrointestinal motility problems in the elderly patient.

Michael Firth1, Charlene M Prather

  • 1Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saint Louis University, St Louis, Missouri 63110, USA.

Gastroenterology
|May 23, 2002
PubMed
Summary

As the population ages, physicians see more elderly patients with gastrointestinal issues. While aging has less direct impact on most GI functions, disorders of function and motility increase in older adults.

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Area of Science:

  • Geriatrics
  • Gastroenterology
  • Internal Medicine

Background:

  • The global population is aging, leading to an increased number of elderly patients presenting with complex health needs.
  • Elderly individuals experience age-related physiological declines affecting multiple systems, including immunological, neurological, and metabolic functions.
  • While the gastrointestinal tract has significant functional reserve, aging is associated with increased prevalence of certain gastrointestinal disorders.

Purpose of the Study:

  • To review age-related changes in gastrointestinal physiology.
  • To discuss the impact of aging on gastrointestinal function and motility.
  • To highlight common gastrointestinal disorders encountered in elderly patients and inform clinical evaluation and treatment.

Main Methods:

  • Literature review of age-related changes in gastrointestinal physiology.
  • Analysis of the prevalence and characteristics of gastrointestinal disorders in the elderly.
  • Discussion of clinical implications for gastroenterologists managing older patients.

Main Results:

  • Aging has a limited direct effect on most gastrointestinal functions due to the tract's functional reserve.
  • Irritable bowel symptoms may decrease with age, but disorders of gastrointestinal function and motility appear to increase.
  • Commonly encountered issues include dysphagia, anorexia, dyspepsia, and colonic dysfunction in elderly patients.

Conclusions:

  • Understanding age-related physiological changes is crucial for effective management of gastrointestinal symptoms in the elderly.
  • Gastroenterologists must be aware of the increased incidence of functional and motility disorders in older adults.
  • Comprehensive evaluation considering comorbid illnesses enhances the treatment of common gastrointestinal complaints in aging populations.