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Gastroesophageal Reflux Disease

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 I: Meaning and Pathophysiology

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 Disease II: Clinical Features and Management

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...

Acid Suppressive Drugs for Peptic Ulcer Disease: Proton Pump Inhibitors

Acid Suppressive Drugs for Peptic Ulcer Disease: Proton Pump Inhibitors

Peptic ulcers, often induced by H. pylori infections or NSAID usage, arise from disruptions in the delicate balance of gastric acid production. Peptic ulcers stem from heightened gastric acid levels due to H. pylori infections or NSAID use. The protective mucus layer diminishes in the presence of these factors, allowing gastric acid to erode the stomach lining and form ulcers.
Gastric acid, a potent cocktail of hydrogen and chloride ions, is produced in specialized parietal cells within the...

Barrett Esophagus-II: Clinical Manifestations and Management

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...

Peptic Ulcer Disease I: Introduction

Peptic Ulcer Disease I: Introduction

Peptic Ulcer Disease (PUD) is characterized by mucosal excavation in the esophagus, stomach, pylorus, or duodenum. It can manifest as acute or chronic based on the extent and duration of mucosal involvement.
An acute ulcer, marked by superficial erosion and minimal inflammation, swiftly resolves upon identifying and addressing the underlying cause. In contrast, a chronic ulcer persists, potentially eroding through the muscular wall and forming fibrous tissue.
Peptic ulcers can also be...

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Updated: Jun 5, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring

Published on: December 14, 2020

What is nonacid reflux disease?

Martin A Storr¹

¹University of Calgary Medical Clinic, Calgary, Alberta. mstorr@ucalgary.ca

Canadian Journal of Gastroenterology = Journal Canadien De Gastroenterologie

|January 25, 2011

Summary

Proton pump inhibitors frequently fail for gastroesophageal reflux disease. Nonacid reflux disease, diagnosed via impedance-pH monitoring, may be treated by novel reflux inhibitors targeting sphincter relaxations.

Area of Science:

Gastroenterology
Digestive Physiology

Background:

Proton pump inhibitors (PPIs) are the standard treatment for gastroesophageal reflux disease (GERD).
A significant percentage of patients (up to 30%) experience treatment failure with PPIs.
Nonacid reflux is a common cause of persistent GERD symptoms.

Purpose of the Study:

To discuss the current understanding of nonacid reflux disease.
To review diagnostic methods for nonacid reflux disease.
To explore potential future treatments for nonacid reflux disease.

Main Methods:

Utilizing multichannel impedance monitoring combined with pH monitoring.
Correlating reflux episodes with patient symptoms.
Reviewing existing literature on nonacid reflux pathophysiology and treatment.

More Related Videos

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

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

Published on: August 27, 2021

Related Experiment Videos

Last Updated: Jun 5, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring

Published on: December 14, 2020

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

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

Published on: August 27, 2021

Main Results:

Nonacid reflux can be detected using impedance-pH monitoring.
Symptom correlation with nonacid reflux episodes aids diagnosis.
Transient lower esophageal sphincter relaxations are implicated in nonacid reflux disease.

Conclusions:

Nonacid reflux disease is a distinct clinical entity.
Impedance-pH monitoring is crucial for diagnosing nonacid reflux.
Reflux inhibitors targeting lower esophageal sphincter relaxations represent a promising future treatment.