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Related Concept Videos

Gastritis III: Clinical Manifestations and Management01:23

Gastritis III: Clinical Manifestations and Management

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The clinical manifestations of gastritis can vary depending on the cause and type of gastritis, but some common symptoms may include the following.
Clinical manifestations of acute gastritis
The patient with acute gastritis may have a rapid onset of symptoms, such as epigastric pain or discomfort, dyspepsia, anorexia, hiccups, or nausea and vomiting, which can last from a few hours to a few days. Erosive or hemorrhagic gastritis may cause bleeding, which may manifest as blood in vomit or as...
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Gastritis-II: Pathophysiology01:17

Gastritis-II: Pathophysiology

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Gastritis is marked by disruption of the mucosal barrier that usually protects the stomach tissue from digestive juices and manifests in acute and chronic forms.
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
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Gastritis-I: Introduction and Types01:27

Gastritis-I: Introduction and Types

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Gastritis, defined by the inflammation or irritation of the stomach lining or gastric mucosa, manifests in several distinct forms: acute, chronic, reactive, and a specific subtype known as autoimmune metaplastic atrophic gastritis.
Acute gastritis presents as a sudden inflammation triggered by various stressors to the stomach lining, such as exposure to corrosive agents, local irritants like aspirin and other NSAIDs, alcohol consumption, radiation therapy, physical trauma, severe burns, sepsis,...
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Gastroesophageal Reflux Disease II: Clinical Features and Management01:29

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Gastroesophageal reflux disease, or GERD, is a persistent medical condition that affects many individuals worldwide. Its clinical manifestations can vary greatly, making diagnosis and management challenging for healthcare professionals. The following is a comprehensive overview of the clinical manifestations, assessment, and management strategies for GERD.
Clinical Manifestations
GERD presents itself in a multitude of ways, with symptoms varying from person to person. The hallmark symptoms are...
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Gastroesophageal Reflux Disease I: Meaning and Pathophysiology01:29

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Gastroesophageal Reflux Disease (GERD) involves the recurrent backflow of the stomach or duodenal contents into the esophagus, leading to troublesome symptoms and potential esophageal mucosal damage. Although GERD is often referred to as a disease, it is more accurately described as a syndrome, as it encompasses a range of symptoms and complications rather than a singular pathological entity, impacting a large number of individuals as the most prevalent upper gastrointestinal problem. Roughly...
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What is Monogastric Digestion?01:50

What is Monogastric Digestion?

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The human body contains a monogastric digestive system. In a monogastric digestive system, the stomach only contains one chamber in which it digests food. Several other animal species also have monogastric digestive systems, including pigs, horses, dogs, and birds. This chapter, however, focuses on the human digestive system.
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Related Experiment Video

Updated: Dec 13, 2025

Adapting Gastrointestinal Organoids for Pathogen Infection and Single Cell Sequencing under Biosafety Level 3 BSL-3 Conditions
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[COVID-19 from a gastroenterological perspective].

Christian Schulz, Julia Mayerle, Hans Christian Stubbe

    Deutsche Medizinische Wochenschrift (1946)
    |July 31, 2020
    PubMed
    Summary
    This summary is machine-generated.

    COVID-19 (Coronavirus Disease 2019) often causes gastrointestinal issues like diarrhea, which may indicate a more severe illness. Viral RNA in stool suggests diagnostic and therapeutic implications, though fecal-oral transmission remains unproven.

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    Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses
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    Area of Science:

    • Virology
    • Gastroenterology
    • Infectious Diseases

    Background:

    • COVID-19, caused by SARS-CoV-2, primarily presents with respiratory symptoms.
    • A significant number of patients experience multi-organ involvement, including gastrointestinal manifestations.
    • Gastrointestinal symptoms like diarrhea are linked to a more severe COVID-19 disease course.

    Purpose of the Study:

    • To explore the implications of gastrointestinal symptoms and viral RNA detection in stool for COVID-19 patient management.
    • To investigate the potential for fecal-oral transmission of SARS-CoV-2.

    Main Methods:

    • Analysis of clinical presentations of COVID-19 patients.
    • Detection of SARS-CoV-2 viral RNA in fecal samples.
    • Review of existing evidence regarding transmission routes.

    Main Results:

    • Diarrhea is associated with a more severe course of COVID-19.
    • SARS-CoV-2 viral RNA can be detected in fecal samples.
    • No clear evidence currently supports fecal-oral transmission of SARS-CoV-2.

    Conclusions:

    • Gastrointestinal symptoms and fecal viral RNA detection have implications for COVID-19 diagnostics and therapeutics.
    • Further research is needed to clarify the role of the gastrointestinal tract in SARS-CoV-2 infection and transmission.