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Related Concept Videos

Gastroesophageal Reflux Disease I: Meaning and Pathophysiology01:29

Gastroesophageal Reflux Disease I: Meaning and Pathophysiology

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...
Gastroesophageal Reflux Disease01:25

Gastroesophageal Reflux Disease

Gastroesophageal reflux disease (GERD) is the backward flow of stomach contents (acid, pepsin, or bile) into the esophagus, causing mucosal inflammation known as esophagitis. It results from failure of antireflux mechanisms, mainly the lower esophageal sphincter (LES), influenced by mechanical and physiological factors.Etiology and Risk FactorsGERD develops when LES function is weakened or when intra-abdominal pressure increases. Risk factors include aging, obesity, and sliding hiatal hernia,...
Gastroesophageal Reflux Disease II: Clinical Features and Management01:29

Gastroesophageal Reflux Disease II: Clinical Features and Management

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...
Gastritis-I: Introduction and Types01:27

Gastritis-I: Introduction and Types

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,...
Esophageal Strictures-I: Introduction01:30

Esophageal Strictures-I: Introduction

Esophageal strictures involve abnormal narrowing or tightening of the esophagus. They vary in length and severity, ranging from mild constriction to complete obstruction, and are classified as benign (noncancerous) or malignant (cancerous).
Etiology
The primary cause of esophageal strictures is long-standing gastroesophageal reflux disease (GERD), accounting for about 70 to 80% of adult cases. Chronic acid reflux can lead to injury and scarring of the esophageal lining, culminating in...
Barrett Esophagus-II: Clinical Manifestations and Management01:21

Barrett Esophagus-II: Clinical Manifestations and Management

Individuals with Barrett's esophagus are often asymptomatic, but they may experience symptoms commonly associated with GERD, such as heartburn and acid regurgitation. Additional symptoms can include difficulty swallowing, chest pain, unintentional weight loss, blood in the stool (which may appear black, tarry, or bloody), and episodes of vomiting.
To diagnose Barrett's esophagus, healthcare providers often recommend an endoscopy for those showing symptoms of acid reflux. The procedure entails...

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Related Experiment Video

Updated: Jul 14, 2026

Construction of a Wireless-Enabled Endoscopically Implantable Sensor for pH Monitoring with Zero-Bias Schottky Diode-based Receiver
08:25

Construction of a Wireless-Enabled Endoscopically Implantable Sensor for pH Monitoring with Zero-Bias Schottky Diode-based Receiver

Published on: August 27, 2021

[Definition and classification of GERD].

Michio Hongo1, Tomotaka Shoji

  • 1Department of Comprehensive Medicine, Tohoku University Hospital.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|May 22, 2007
PubMed
Summary

Gastro-esophageal reflux disease (GERD) involves stomach content reflux causing symptoms or complications. Newer definitions include extra-esophageal symptoms and conditions like NERD, expanding our understanding of GERD

Area of Science:

  • Gastroenterology
  • Digestive Health
  • Reflux Disorders

Context:

  • Gastro-esophageal reflux disease (GERD) is characterized by troublesome symptoms and complications from stomach content reflux.
  • Traditional definitions focused on reflux esophagitis and symptoms, but the Montreal definition broadened GERD to include extra-esophageal manifestations.
  • Non-erosive reflux disease (NERD) describes symptomatic patients without visible mucosal breaks, and functional heartburn presents similarly but differs in proton pump inhibitor responsiveness.

Purpose:

  • To review and clarify the evolving definitions and understanding of gastro-esophageal reflux disease (GERD).
  • To differentiate between GERD, NERD, and functional heartburn based on diagnostic criteria and symptom presentation.
  • To highlight the expansion of GERD classification beyond esophageal findings to include extra-esophageal symptoms.

More Related Videos

Surgical Models of Gastroesophageal Reflux with Mice
05:19

Surgical Models of Gastroesophageal Reflux with Mice

Published on: August 25, 2015

Related Experiment Videos

Last Updated: Jul 14, 2026

Construction of a Wireless-Enabled Endoscopically Implantable Sensor for pH Monitoring with Zero-Bias Schottky Diode-based Receiver
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Construction of a Wireless-Enabled Endoscopically Implantable Sensor for pH Monitoring with Zero-Bias Schottky Diode-based Receiver

Published on: August 27, 2021

Surgical Models of Gastroesophageal Reflux with Mice
05:19

Surgical Models of Gastroesophageal Reflux with Mice

Published on: August 25, 2015

Summary:

  • GERD is defined by troublesome symptoms and/or complications from stomach reflux.
  • The Montreal definition expanded GERD to include extra-esophageal symptoms and complications.
  • NERD and functional heartburn are related conditions with distinct diagnostic features.

Impact:

  • Improved diagnostic clarity for a spectrum of reflux-related conditions.
  • Enhanced understanding of GERD's diverse clinical presentations, including extra-esophageal manifestations.
  • Foundation for further research into the pathophysiology and management of GERD and related disorders.