Gastroenterology · Esophageal Disorders
The facts most likely to be tested
The initial management for patients with typical symptoms of heartburn and regurgitation is an 8-week trial of empiric proton pump inhibitor (PPI) therapy.
Upper endoscopy (EGD) is the diagnostic test of choice for patients with alarm symptoms such as dysphagia, odynophagia, weight loss, anemia, or hematemesis.
Barrett esophagus is a metaplastic change of the distal esophageal mucosa from squamous epithelium to specialized columnar epithelium with goblet cells.
Ambulatory pH monitoring is the gold standard for diagnosing non-erosive reflux disease (NERD) or confirming GERD in patients with refractory symptoms despite PPI therapy.
Esophageal manometry is required prior to antireflux surgery (e.g., Nissen fundoplication) to rule out motility disorders like achalasia or scleroderma esophagus.
Chronic GERD is the primary risk factor for esophageal adenocarcinoma, necessitating surveillance endoscopy in patients with confirmed Barrett esophagus.
Lifestyle modifications including weight loss, head-of-bed elevation, and avoidance of trigger foods (caffeine, alcohol, chocolate) are first-line adjunctive therapies.
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A 58-year-old male presents to the clinic with a 6-month history of retrosternal burning that worsens after meals and when lying flat. He reports occasional regurgitation of sour-tasting fluid. He has tried over-the-counter antacids with minimal relief. He denies dysphagia, weight loss, or melena. His physical examination is unremarkable, and his BMI is 31 kg/m².
What is the most appropriate next step in the management of this patient?
Initiate an 8-week trial of empiric proton pump inhibitor (PPI) therapy.
The patient presents with classic symptoms of GERD without alarm features, making an empiric trial of PPIs the standard initial management according to current guidelines.
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Etiology / Epidemiology
Caused by transient lower esophageal sphincter (LES) relaxation. Risk factors: obesity, hiatal hernia, and pregnancy.
Clinical Manifestations
Classic heartburn and acid regurgitation. Water brash and globus sensation are common.
Diagnosis
Clinical diagnosis. Ambulatory pH monitoring is the gold standard for refractory cases.
Treatment
Lifestyle modification + Proton Pump Inhibitors (PPIs). Long-term PPI use risk: hip fracture.
Prognosis
Risk of Barrett's esophagus (metaplasia). Monitor via endoscopy for dysplasia.
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Epidemiology & Etiology
GERD is highly prevalent in Western populations, often exacerbated by obesity and dietary triggers like caffeine or alcohol. A hiatal hernia is a frequent anatomical contributor to impaired LES function. Chronic symptoms are defined as occurring >2 times per week.
Pertinent Anatomy
The lower esophageal sphincter (LES) acts as the primary antireflux barrier. The angle of His and the crural diaphragm provide extrinsic support to the distal esophagus.
Pathophysiology
Pathology stems from transient LES relaxations (TLESRs) allowing gastric acid to contact the esophageal mucosa. Impaired esophageal clearance and delayed gastric emptying further exacerbate mucosal injury. Chronic acid exposure leads to columnar metaplasia of the squamous epithelium.
Clinical Manifestations
Patients present with retrosternal heartburn and acid regurgitation, often worsening in the supine position. Red flags include dysphagia, odynophagia, weight loss, and anemia, which mandate immediate investigation. Extra-esophageal manifestations include chronic cough, laryngitis, and dental erosions.
Diagnosis
Diagnosis is primarily clinical in patients with classic symptoms. Upper endoscopy (EGD) is indicated for alarm symptoms or to assess for complications. Ambulatory pH monitoring is the gold standard for confirming GERD in patients with refractory symptoms despite maximal medical therapy.
Treatment
First-line therapy is Proton Pump Inhibitors (PPIs) taken 30 minutes before the first meal. Lifestyle modifications include weight loss, head-of-bed elevation, and avoiding late-night meals. Long-term PPI use is associated with hypomagnesemia, B12 deficiency, and Clostridioides difficile infection.
Prognosis
Chronic inflammation leads to Barrett's esophagus, a precursor to adenocarcinoma. Patients with confirmed Barrett's require periodic surveillance endoscopy to monitor for the development of high-grade dysplasia.
Differential Diagnosis
Peptic Ulcer Disease: epigastric pain relieved by food
Esophageal Spasm: chest pain mimicking angina, not related to acid
Eosinophilic Esophagitis: dysphagia to solids, history of atopy
Achalasia: dysphagia to both solids and liquids
Coronary Artery Disease: exertional chest pain, must rule out in high-risk patients