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[Pathogenesis of gastroesophageal reflux]
Schweizerische Medizinische Wochenschrift
|January 26, 1985
Summary
Gastro-oesophageal reflux (GOR) is common, often due to spontaneous lower oesophageal sphincter relaxations. Understanding the multifactorial causes of GOR is key for diagnosing and managing reflux disease.
Area of Science:
- Gastroenterology
- Physiology
Context:
- Gastro-oesophageal reflux (GOR) is a prevalent condition affecting nearly all individuals.
- Reflux episodes occur via spontaneous lower oesophageal sphincter relaxations, particularly postprandially.
Purpose:
- To explore the neural, hormonal, and muscular factors influencing GOR.
- To differentiate reflux patterns in healthy individuals versus those with reflux disease.
- To identify the multifactorial pathogenesis of complicated reflux disease.
Summary:
- While healthy individuals experience reflux via normal sphincter relaxations, many with reflux disease exhibit decreased lower oesophageal sphincter pressure, leading to stress or free reflux.
- Factors like pharmacological agents, gastric contents, and the noxious components of refluxate (H+, pepsin, bile salts, trypsin) exacerbate oesophageal damage.
- Prolonged contact time, especially during supine or nocturnal reflux, impairs oesophageal clearance.
Impact:
- Highlights the need for a multifactorial approach to understanding GOR pathogenesis.
- Emphasizes the utility of advanced diagnostic tools like manometry, scintiscanning, and prolonged pH-monitoring.
- Aids in identifying individual pathogenetic factors for tailored management of complicated reflux disease.