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Related Concept Videos

Gastric Emptying01:16

Gastric Emptying

Gastric emptying occurs when the stomach gradually releases chyme into the duodenum. When the stomach is distended, it triggers the release of gastrin, a hormone that promotes gastric acid secretion to aid in digestion. Additionally, stomach distension contributes to peristaltic waves that propel gastric contents toward the pyloric region. The gastroenteric reflex, on the other hand, primarily stimulates peristalsis in the intestines, facilitating the movement of contents further along the...
Pyloric Obstruction01:11

Pyloric Obstruction

Pyloric obstruction, also referred to as gastric outlet obstruction, is a condition characterized by narrowing or blockage at the pylorus—the muscular valve regulating the flow of stomach contents into the duodenum. When this passage becomes impaired, the stomach cannot effectively empty its contents into the small intestine. This disruption leads to a range of gastrointestinal symptoms, including early satiety, bloating, epigastric pain, postprandial nausea, persistent vomiting, and...
Gastric Phase of Digestion01:26

Gastric Phase of Digestion

The gastric phase of digestion begins as soon as food enters the stomach. The incoming food bolus triggers neural and hormonal mechanisms, which last approximately 3 to 4 hours. During this phase, the stomach undergoes significant changes to prepare the food for further digestion and absorption.
When food enters the stomach, it stretches the stomach walls and activates stretch receptors. This triggers local reflexes of the enteric nervous system, mediated through the myenteric plexus. These...
Intestinal Phase of Digestion01:29

Intestinal Phase of Digestion

The intestinal phase of digestion is the third and final stage of the digestive process, occurring after the cephalic and gastric phases. It begins when chyme, a partially digested mixture of food and digestive enzymes, enters the small intestine from the stomach. This phase is crucial for nutrient absorption and involves complex hormonal and enzymatic interactions.
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies01:28

Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies

Peptic ulcer disease (PUD) presents with diverse symptoms depending on the location and severity of the ulcer. Clinical manifestations of peptic ulcer include dull pain and a burning sensation in the mid-epigastric region.
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
Intestinal Obstruction II: Pathophysiology01:07

Intestinal Obstruction II: Pathophysiology

Intestinal obstruction triggers a series of physiological responses, starting with gas and fluid accumulation in the bowel segment proximal to the obstruction, leading to distension. This distended intestine compresses the diaphragm, hindering lung expansion and potentially leading to reduced respiratory effort, atelectasis, and pneumonia.To overcome the blockage, the gut intensifies contractions, causing colicky abdominal pain, nausea, and vomiting, which reduces fluid and food intake and...

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Updated: May 16, 2026

Gastric Point of Care Ultrasound in Adults: Image Acquisition and Interpretation
05:50

Gastric Point of Care Ultrasound in Adults: Image Acquisition and Interpretation

Published on: September 22, 2023

Gastric distension.

Ching-Siang Cheng1, John Hack

  • 1The Townsville Hospital Institute of Surgery, Queensland, Australia. cheng.chingsiang@gmail.com

Australian Family Physician
|November 13, 2012
PubMed
Summary

An 82-year-old woman experienced severe abdominal pain, vomiting, and distension. This case study highlights a critical presentation requiring urgent medical evaluation for potential gastrointestinal emergencies.

Area of Science:

  • Geriatric Medicine
  • Gastroenterology
  • Emergency Medicine

Background:

  • An 82-year-old female patient with a history of significant unintentional weight loss.
  • Pre-existing comorbidities were not detailed but are often relevant in elderly patients.

Observation:

  • The patient presented with an 8-day history of progressively worsening generalized abdominal pain.
  • Associated symptoms included non-fecal emesis (vomiting) and abdominal distension.
  • A significant background history of 20 kg weight loss over several months was noted.

Findings:

  • The constellation of symptoms suggests a potential acute abdominal process.
  • Differential diagnoses include bowel obstruction, perforation, or other intra-abdominal pathologies.
  • The preceding weight loss may indicate an underlying chronic condition or malignancy.

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Fabrication and Implantation of Miniature Dual-element Strain Gages for Measuring In Vivo Gastrointestinal Contractions in Rodents.
09:29

Fabrication and Implantation of Miniature Dual-element Strain Gages for Measuring In Vivo Gastrointestinal Contractions in Rodents.

Published on: September 18, 2014

Related Experiment Videos

Last Updated: May 16, 2026

Gastric Point of Care Ultrasound in Adults: Image Acquisition and Interpretation
05:50

Gastric Point of Care Ultrasound in Adults: Image Acquisition and Interpretation

Published on: September 22, 2023

Fabrication and Implantation of Miniature Dual-element Strain Gages for Measuring In Vivo Gastrointestinal Contractions in Rodents.
09:29

Fabrication and Implantation of Miniature Dual-element Strain Gages for Measuring In Vivo Gastrointestinal Contractions in Rodents.

Published on: September 18, 2014

Implications:

  • Prompt diagnostic workup is crucial in elderly patients with acute abdominal symptoms.
  • Early identification and management can prevent severe complications and improve outcomes.
  • This case underscores the importance of considering serious gastrointestinal pathology in the elderly presenting with abdominal complaints.