Gastroesophageal Reflux Disease (GERD) is a chronic digestive disorder that occurs when stomach acid, or sometimes bile, flows back up into the esophagus (the tube connecting your mouth to your stomach). This backwash (reflux) irritates the lining of the esophagus, causing uncomfortable symptoms. While occasional acid reflux is common, GERD is diagnosed when acid reflux occurs frequently or causes complications. If left untreated, GERD can lead to serious health problems, including esophagitis, esophageal stricture, Barrett’s esophagus, and even esophageal cancer.
Causes:
GERD is primarily caused by frequent acid reflux, which happens when the lower esophageal sphincter (LES) — a circular band of muscle at the bottom of the esophagus that acts as a valve — relaxes abnormally or weakens, allowing stomach contents to flow back up. Several factors can contribute to this.
- Weakened or Relaxed Lower Esophageal Sphincter (LES): This is the main reason for reflux. The LES may open too often, not close tightly enough, or remain open for too long.
- Hiatal Hernia: A condition where a portion of the stomach pushes up through the diaphragm into the chest. This can compromise the LES and allow acid to reflux more easily.
- Increased Abdominal Pressure:
- Obesity: Excess weight puts pressure on the abdomen and stomach.
- Pregnancy: Hormonal changes and pressure from the growing uterus.
- Tight Clothing: Around the waist.
- Certain Foods and Drinks: These can trigger reflux by relaxing the LES, increasing stomach acid, or irritating the esophageal lining.
- Fatty foods, fried foods.
- Spicy foods.
- Citrus fruits and juices.
- Tomatoes and tomato-based products.
- Chocolate.
- Peppermint.
- Caffeine.
- Alcohol.
- Carbonated beverages.
- Lifestyle Factors:
- Large Meals: Especially close to bedtime.
- Smoking: Nicotine can relax the LES and impair saliva production (which neutralizes acid).
- Lying Down Soon After Eating.
- Certain Medications: Some drugs can worsen GERD by relaxing the LES or irritating the esophagus.
- Antihistamines.
- Calcium channel blockers (for high blood pressure).
- Pain relievers (NSAIDs like ibuprofen).
- Sedatives.
- Nitrates (for heart conditions).
- Delayed Stomach Emptying (Gastroparesis): If food stays in the stomach for too long, it can increase the likelihood of reflux.
Symptoms:
The symptoms of GERD can vary in frequency and intensity. While heartburn is the most common symptom, GERD can present with a variety of esophageal and extra-esophageal manifestations.
- Heartburn: A burning sensation in the chest, often behind the breastbone, that sometimes spreads to the throat. It typically worsens after eating, at night, or when lying down or bending over.
- Regurgitation: The sensation of stomach acid or bitter liquid backing up into the throat or mouth.
- Dysphagia (Difficulty Swallowing): Due to a narrowed esophagus or the sensation of food being stuck.
- Odynophagia (Painful Swallowing): Due to esophageal irritation.
- Chest Pain: Non-cardiac chest pain, often confused with heart attack pain.
- Chronic Cough: Especially at night.
- Hoarseness or Laryngitis: Due to acid irritating the vocal cords.
- Sore Throat.
- Asthma: Worsening or new-onset asthma, especially nocturnal asthma.
- Erosion of Tooth Enamel: Due to acid exposure in the mouth.
- Halitosis (Bad Breath).
- Sleep Disturbances: Due to discomfort.
Diagnosis:
Diagnosing GERD often involves a review of symptoms, a physical examination, and sometimes diagnostic tests, especially if symptoms are severe, persistent, or suggest complications.
- Symptom Review: Often, a diagnosis can be made based on typical symptoms like heartburn and regurgitation, especially if they respond to acid-suppressing medications.
- Upper Endoscopy (EGD – Esophagogastroduodenoscopy):
- A thin, flexible tube with a camera is inserted down the throat to visualize the esophagus, stomach, and duodenum.
- Can detect esophageal irritation (esophagitis), strictures, hiatal hernia, or Barrett’s esophagus.
- Biopsies can be taken to check for microscopic changes or rule out other conditions.
- Ambulatory pH Probe Test (Esophageal pH Monitoring):
- Considered the gold standard for diagnosing GERD.
- A thin tube with a sensor is inserted through the nose into the esophagus to measure acid exposure over 24-48 hours, correlating acid events with symptoms.
- Wireless pH monitoring (e.g., Bravo capsule) can be placed endoscopically.
- Esophageal Manometry:
- Measures the strength and coordination of esophageal muscle contractions and the function of the LES.
- Helps rule out other esophageal motility disorders.
- Barium Swallow (Upper GI Series): An X-ray exam where you swallow a liquid containing barium. It can show the outline of the esophagus, stomach, and duodenum, and identify strictures or hiatal hernia, but is less useful for identifying subtle inflammation.
Treatment:
Treatment for GERD aims to reduce acid reflux, alleviate symptoms, heal esophageal damage, and prevent complications. It typically involves lifestyle modifications, medications, and sometimes surgery.
- Lifestyle Modifications (First-line for all GERD patients):
- Dietary Changes: Avoid trigger foods (fatty, spicy, acidic, caffeine, alcohol, chocolate, peppermint).
- Eat Smaller, More Frequent Meals: Avoid overeating.
- Avoid Lying Down After Eating: Wait at least 2-3 hours after meals before lying down.
- Elevate the Head of the Bed: Raise the head of your bed by 6-8 inches using blocks or a wedge pillow.
- Weight Management: Lose excess weight if overweight or obese.
- Quit Smoking: Nicotine weakens the LES.
- Avoid Tight Clothing: Around the abdomen.
- Medications:
- Antacids: (e.g., Tums, Maalox) Provide quick, temporary relief by neutralizing stomach acid.
- H2 Blockers (Histamine-2 Receptor Blockers): Reduce acid production (e.g., famotidine – Pepcid AC, ranitidine – Zantac). Provide longer-lasting relief than antacids.
- Proton Pump Inhibitors (PPIs): The most effective medications for reducing stomach acid. They block acid production (e.g., omeprazole – Prilosec, esomeprazole – Nexium, lansoprazole – Prevacid). Used for healing esophagitis and long-term control.
- Prokinetics: (e.g., metoclopramide) Help empty the stomach faster and strengthen the LES, but less commonly used due to side effects.
- Surgical and Endoscopic Procedures (for severe GERD not responsive to other treatments):
- Fundoplication (Nissen Fundoplication): The most common surgery. The top part of the stomach (fundus) is wrapped around the lower esophagus and LES, reinforcing the valve to prevent reflux. Can be done laparoscopically.
- LINX Device: A ring of magnetic titanium beads is surgically placed around the lower esophagus. The magnetic attraction helps keep the LES closed but allows food to pass through.
- Transoral Incisionless Fundoplication (TIF): An endoscopic procedure that reshapes the LES from inside the stomach without incisions.
Management of GERD is often a lifelong process. Close collaboration with a healthcare provider, often a gastroenterologist, is essential for effective symptom control and preventing complications.
