Heartburn (Gastroesophageal Reflux Disease)

Overview

Gastroesophageal reflux disease (GERD) is a chronic condition in which stomach contents—acid, digestive enzymes, and sometimes bile—flow backward (reflux) into the esophagus, irritating its lining. Most people experience occasional heartburn, a burning sensation behind the breastbone, but when reflux occurs **≥ two‑times per week** and causes troublesome symptoms or complications, it meets the clinical definition of GERD.

GERD affects **10‑20 % of adults worldwide** and is one of the most common gastrointestinal disorders seen in primary‑care settings.^{[1] Mayo Clinic} It can occur at any age, but prevalence rises after 40 years and is slightly higher in Western countries, likely due to diet and obesity patterns.^{[2] WHO}

Symptoms

Symptoms vary in intensity and may be atypical, especially in older adults. Common and less‑common manifestations include:

• Classic heartburn: A burning pain behind the breastbone that often worsens after meals or when lying down.
• Regurgitation: Sour or bitter fluid returning to the mouth, sometimes with a sensation of food “sticking.”
• Chest pain: Can mimic angina; usually non‑cardiac, but must be evaluated.
• Hoarseness, chronic cough, or throat clearing: Irritation of the larynx from acid.
• Sore throat or feeling of a lump in the throat (globus sensation).
• Dysphagia: Difficulty swallowing, often a sign of esophageal narrowing.
• Dental erosion or bad breath: Acid attack on tooth enamel.
• Respiratory symptoms: Asthma‑like wheeze, chronic bronchitis, or nighttime cough.
• Vomiting or nausea: Especially after large meals.
• Chest discomfort after eating or lying down.

Symptoms may be **intermittent** or **persistent**; chronic daily heartburn is a red flag for esophagitis or Barrett’s esophagus.

Causes and Risk Factors

Pathophysiology

GERD develops when the protective mechanisms that keep gastric contents within the stomach fail. Key mechanisms include:

• Lower esophageal sphincter (LES) dysfunction: Transient LES relaxations or low resting pressure allow reflux.
• Hiatal hernia: Stomach protrudes through the diaphragm, disrupting LES mechanics.
• Delayed gastric emptying: Increases intragastric pressure.
• Increased intra‑abdominal pressure: Obesity, pregnancy, or tight clothing.

Risk Factors

• Obesity (BMI ≥ 30 kg/m²) – risk rises 2‑3 fold.^{[3] Cleveland Clinic}
• Pregnancy (progesterone‑mediated LES relaxation).
• Smoking – reduces LES pressure and saliva production.
• Alcohol consumption – irritates esophageal mucosa.
• Diet high in fatty, fried, chocolate, peppermint, caffeine, citrus, or tomato‑based foods.
• Medications that relax the LES: calcium‑channel blockers, nitrates, antihistamines, benzodiazepines.
• Connective‑tissue disorders (e.g., scleroderma) affecting esophageal motility.
• Older age – decreased LES tone and slower esophageal clearance.
• Family history – genetic predisposition to LES dysfunction.

Diagnosis

Clinical Evaluation

Diagnosis begins with a thorough history and physical exam. Physicians use the **GERD questionnaire** or **Reflux Disease Questionnaire (RDQ)** to gauge frequency and severity.

When to Perform Diagnostic Tests

• Alarm features: dysphagia, odynophagia, weight loss, gastrointestinal bleeding, anemia.
• Atypical or refractory symptoms despite empiric therapy.
• Patients > 55 years with new‑onset heartburn (higher cancer risk).

Common Diagnostic Tools

• Upper endoscopy (EGD): Visualizes esophageal mucosa, grades esophagitis (Los Angeles classification), detects Barrett’s, strictures, or cancer. Indicated for alarm symptoms or chronic GERD > 5 years.^{[4] NIH}
• 24‑hour ambulatory pH monitoring (or pH‑impedance): Gold standard to confirm acid exposure; useful when symptoms are atypical or after surgery.
• Esophageal manometry: Assesses LES pressure and peristalsis; performed before anti‑reflux surgery.
• Barium swallow: Helps identify hiatal hernia, strictures, or motility disorders, but less sensitive for GERD.
• Empiric trial of proton‑pump inhibitors (PPIs): Improvement of symptoms for 1‑2 weeks supports the diagnosis.

Treatment Options

Lifestyle and Dietary Modifications (First‑Line)

• Elevate head of bed 6‑8 inches.
• Avoid meals within 2‑3 hours of lying down.
• Consume smaller, low‑fat meals; limit trigger foods (chocolate, caffeine, alcohol, citrus, tomato, mint, spicy foods).
• Maintain a healthy weight; aim for ≥ 5‑10 % weight loss if BMI ≥ 30.
• Quit smoking and limit alcohol.
• Wear loose clothing; avoid tight belts.

Medications

When Medications Fail

• Fundoplication (Laparoscopic Nissen or Toupet): Wraps the gastric fundus around the distal esophagus to reinforce LES. Success rates 85‑90 % for symptom control.^{[5] Mayo Clinic}
• Magnetic sphincter augmentation (LINX device): Beads of magnetic titanium create a dynamic LES augmentation.
• Endoscopic therapies: Radiofrequency ablation (Stretta), transoral incisionless fundoplication (TIF).
• Trans‑oral esophageal plication or gastroplasty: Emerging options for selected patients.

Living with Heartburn (Gastroesophageal reflux disease)

Daily Management Tips

• Keep a symptom diary: Record foods, timing, posture, and medication response to identify personal triggers.
• Stay hydrated, but avoid large fluid volumes with meals.
• Chew gum after meals: Increases saliva, which neutralizes acid.
• Wear loose‑fitting clothing.
• Use over‑the‑counter antacids judiciously: No more than the recommended daily dose; chronic reliance should prompt a doctor’s visit.
• Maintain regular follow‑up: Endoscopic surveillance every 3‑5 years for Barrett’s esophagus or if long‑standing GERD.
• Mindful eating: Eat slowly, chew thoroughly, and avoid eating while stressed or distracted.

Impact on Quality of Life

Uncontrolled GERD can affect sleep, work productivity, and mental health. Cognitive‑behavioral strategies, stress‑reduction techniques (yoga, meditation), and counseling can improve coping.

Prevention

• Adopt a balanced, low‑fat diet rich in vegetables, lean protein, and whole grains.
• Maintain a healthy weight; aim for BMI < 25 kg/m².
• Quit smoking; seek cessation programs or nicotine replacement therapy.
• Limit alcohol to ≤ 1 drink/day for women, ≤ 2 drinks/day for men.
• Avoid lying down immediately after meals; raise the head of the bed.
• Wear loose clothing and avoid tight belts.
• Use medications that may worsen GERD (e.g., certain antihistamines, calcium‑channel blockers) only under physician guidance.

Complications

If left untreated, chronic acid exposure can lead to serious sequelae:

• Esophagitis: Inflammation, ulceration, and bleeding.
• Strictures: Narrowing from scar tissue causing dysphagia.
• Barrett’s esophagus: Metaplastic change of squamous epitheli to columnar; increases esophageal adenocarcinoma risk (≈ 0.5‑1 % per year).^{[6] CDC}
• Esophageal adenocarcinoma: 5‑fold higher risk in Barrett’s patients.
• Respiratory complications: Chronic cough, asthma‑type symptoms, aspiration pneumonia.
• Dental erosion and laryngopharyngeal reflux (LPR): Ongoing throat irritation.

When to Seek Emergency Care

References

1. Mayo Clinic. Gastroesophageal reflux disease (GERD). https://www.mayoclinic.org/diseases‑conditions/gerd
2. World Health Organization. Global health estimates – prevalence of gastro‑oesophageal reflux disease.
3. Cleveland Clinic. Obesity and GERD. https://my.clevelandclinic.org/health/diseases/15834‑gastroesophageal‑reflux‑disease‑gerd
4. National Institutes of Health. Guidelines for the Diagnosis and Management of GERD. https://www.niddk.nih.gov/health-information/digestive-diseases/gerd
5. Mayo Clinic. Surgical options for GERD. https://www.mayoclinic.org/diseases‑conditions/gerd/diagnosis‑treatment
6. Centers for Disease Control and Prevention. Barrett’s esophagus and cancer risk. https://www.cdc.gov/cancer/esophagus/