The hypersensitive esophagus: pathophysiology, evaluation, and treatment options

Area of Science:

• Gastroenterology
• Esophageal Physiology
• Functional Gastrointestinal Disorders

Background:

• Visceral hypersensitivity is a key factor in the development of functional esophageal disorders.
• Conditions like functional heartburn and noncardiac chest pain are linked to esophageal hypersensitivity.
• A significant majority of patients with unexplained chest pain show reduced esophageal sensory thresholds.

Purpose of the Study:

• To review recent findings on the pathophysiology of the hypersensitive esophagus.
• To summarize current evaluation methods for esophageal hypersensitivity.
• To highlight therapeutic approaches for managing hypersensitive esophagus in functional esophageal disorders.

Main Methods:

• Review of recent scientific literature on esophageal hypersensitivity.
• Analysis of findings from esophageal sensory testing methods (e.g., esophageal barostat, impedance planimetry).
• Synthesis of information on therapeutic interventions.

Main Results:

• Approximately 80% of patients with unexplained noncardiac chest pain demonstrate lower esophageal sensory thresholds compared to healthy controls.
• Esophageal sensory testing confirms reduced thresholds in patients with functional esophageal disorders.
• Therapeutic strategies often target peripheral or central mechanisms to manage hypersensitivity.

Conclusions:

• The hypersensitive esophagus is a critical element in the pathogenesis of functional esophageal disorders.
• Understanding esophageal sensory thresholds is vital for diagnosing and managing these conditions.
• Current and emerging therapies aim to modulate visceral hypersensitivity for improved patient outcomes.