★ Must-know
📌 Gastroesophageal reflux is physiological after meals but becomes pathological when it is associated with symptoms and/or esophageal mucosal lesions.
Further detail
Gastroesophageal reflux is diagnosed clinically and with endoscopy, pH monitoring, or pH-impedance monitoring, and is treated with proton-pump inhibitors, H2 antagonists, alginates, and lifestyle measures.
Surgical treatment is a second-line option, and 30–42% of patients do not respond to proton-pump inhibitors and therefore have proton-pump-inhibitor-refractory reflux.
Physiological after meals, pathological with symptoms or mucosal lesions
1. What best defines gastroesophageal reflux?
2. When does physiological gastroesophageal reflux become pathological?
3. Which combination represents established approaches to diagnosing and treating gastroesophageal reflux?
What is gastroesophageal reflux?
The involuntary passage of gastric contents into the esophagus through the cardia without vomiting effort.
When does gastroesophageal reflux become pathological?
When it is associated with symptoms and/or esophageal mucosal lesions.
What percentage of the population is affected by gastroesophageal reflux?
34–40% according to reflux questionnaires.
What is the main pathophysiological mechanism in reflux?
Incompetence of the antireflux barrier.
Which factors contribute to antireflux barrier incompetence?
Transient lower esophageal sphincter relaxation, increased abdominal pressure, or permanent sphincter hypotonia.
What mechanisms support esophageal clearance?
Gravity, esophageal peristalsis, and saliva with bicarbonate ions.
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