Esophageal Emergencies, Caustic Ingestions & Foreign Bodies
Comprehensive emergency evaluation and protocolized management of life-threatening esophageal pathology. Features the diagnostic algorithms for Boerhaave syndrome vs. Mallory-Weiss tears, the timing and indications for emergency endoscopy in food bolus and sharp foreign bodies, the catastrophic risks of button battery ingestion, and the resuscitation and staging of caustic alkali and acid ingestions.
Resuscitation Quick Actions • First 2 Minutes
Button Battery Emergency
Esophageal button battery requires stat emergent endoscopy (< 2h); give oral honey (10 mL q10min) en route to OR in children >= 1 year
Mackler Triad
Vomiting + Severe lower retrosternal chest pain + Subcutaneous emphysema -> Boerhaave syndrome (stat thoracic surgery consult)
Food Bolus Impaction
Complete obstruction with sialorrhea/inability to swallow secretions mandates emergent endoscopy within 6 hours
Caustic Ingestion Rule
NEVER induce emesis, administer activated charcoal, or attempt chemical neutralization (exothermic reaction worsens tissue burn)
Boerhaave Imaging
CT Chest with oral water-soluble contrast (Gastrografin); follow with dilute barium if Gastrografin is negative and suspicion remains high
Bottom-Line Clinical Pearl
Esophageal button batteries are true surgical emergencies: tissue liquefaction necrosis, esophageal perforation, and fatal aortoesophageal fistula can occur within 2 hours. In Boerhaave syndrome (transmural esophageal rupture), mortality doubles if surgical repair is delayed beyond 24 hours; maintain high index of suspicion in any patient with chest pain, vomiting, and subcutaneous emphysema (Mackler triad).
Boerhaave syndrome is a full-thickness tear of the esophageal wall caused by a sudden, violent increase in intraluminal pressure against a closed glottis (most commonly during forceful vomiting or retching). Ninety percent of ruptures occur in the left posterolateral wall of the distal intrathoracic esophagus (2 to 3 cm proximal to the gastroesophageal junction), rapidly contaminating the mediastinum with gastric contents, saliva, and oral flora.
| Clinical Feature | Classic Presentation & Diagnostic Findings | Emergency Pitfall & Pathophysiology |
|---|---|---|
| Mackler Triad | 1. Forceful vomiting/retching 2. Severe, tearing lower chest/retrosternal/epigastric pain 3. Subcutaneous cervical emphysema (palpable crepitus in suprasternal notch) | Present in only 50% of cases. The pain often radiates to the back or left shoulder, frequently misdiagnosed as acute aortic dissection, myocardial infarction, or pancreatitis. |
| Physical Examination | Hamman's sign/crunch: A precordial crunching, raspy, or clicking sound synchronous with each heartbeat on auscultation, produced by air churning around the pericardium. | Rapid development of septic shock, pleural effusion (predominantly left-sided), dyspnea, cyanosis, and high fever as mediastinitis progresses. |
| Chest Radiography | Pneumomediastinum (linear radiolucencies tracking along cardiac borders and descending aorta), left-sided pleural effusion, left pneumothorax, and subcutaneous emphysema. | Plain radiographs are normal in 10-15% of patients presenting early (< 6 hours). A normal plain CXR never excludes esophageal rupture. |
| Confirmatory Imaging | CT Chest and Abdomen with IV and Oral Water-Soluble Contrast (Gastrografin). If Gastrografin is negative and clinical suspicion remains elevated, proceed with dilute Barium swallow (detects small mucosal leaks). | Do NOT use barium as initial agent: extravasated barium in the mediastinum incites severe, irreversible granulomatous mediastinitis and pleural fibrosis. |
Emergency Resuscitation Protocol: 1) Strict NPO; 2) Aggressive crystalloid resuscitation for distributive septic shock; 3) Broad-spectrum IV antibiotics covering oral anaerobes, gram-positives, and enteric gram-negatives: Piperacillin-Tazobactam (Zosyn 4.5g IV q6h) PLUS Vancomycin (15-20 mg/kg IV) PLUS Fluconazole (400 mg IV) for fungal coverage; 4) IV Proton Pump Inhibitor (Pantoprazole 80 mg IV bolus); 5) Stat emergent Cardiothoracic Surgery consultation for operative debridement, primary closure, and pleural drainage within the golden 24-hour window.
Seventy-five percent of ingested foreign bodies lodge at physiologic anatomical esophageal constrictions: the cricopharyngeus muscle (C6 level), the aortic arch/left main bronchus crossover (T4 level), or the lower esophageal sphincter (T11-T12 level). Triage is categorized by anatomical location and foreign body characteristics:
| Triage Category | Foreign Body Type & Presentation | Required Timeline for Endoscopy | Clinical Pearl & Action |
|---|---|---|---|
| Emergent Endoscopy (Immediate/Within 2 to 6 Hours) | 1. Button battery lodged in esophagus 2. Sharp-pointed objects (pins, open safety pins, needles, razor blades) 3. Multiple high-powered rare-earth magnets 4. Complete esophageal obstruction with inability to swallow secretions/active drooling | IMMEDIATE (DO NOT DELAY FOR FASTING): Procedure performed under general endotracheal anesthesia with airway protection. | Button batteries generate electrical currents, produce hydroxide ions, and cause deep liquefactive necrosis within 2 hours. Disk magnets attract across bowel walls, causing pressure necrosis, volvulus, and internal fistulae. |
| Urgent Endoscopy (Within 12 to 24 Hours) | 1. Incomplete food bolus impaction without drooling (patient handling own secretions) 2. Blunt objects > 2.5 cm diameter (will not pass pylorus) 3. Long objects > 5-6 cm length (will not pass duodenal sweep) 4. Coins in asymptomatic patients that remain in esophagus for > 24 hours | Within 12 to 24 hours. | Pharmacologic relaxation (Glucagon 1 mg IV slow push) relaxes the lower esophageal sphincter with 30-50% success; adverse effects include sudden severe vomiting which risks perforation. Avoid papain meat tenderizers (causes esophageal necrosis and death). |
| Non-Urgent/Expectant Observation | Smooth, small blunt objects (coins, small buttons) that have already passed through the gastroesophageal junction into the stomach in an asymptomatic patient. | Follow outpatient with serial weekly radiographs. | Eighty percent of objects that traverse the stomach will pass spontaneously through the gastrointestinal tract without complications. |
| Caustic Agent | Common Sources & Mechanism | Pathophysiologic Tissue Injury | Clinical Manifestations & Staging |
|---|---|---|---|
| Alkali (pH > 11.5–12) | Drain cleaners (sodium hydroxide/lye), oven cleaners, automatic dishwasher detergents, bleaches. | Liquefaction Necrosis: Saponifies fat, dissolves proteins, and disrupts cell membranes, allowing rapid and deep transmural penetration through the esophageal wall into the mediastinum and pericardium. | Thick, slimy transmural burns. Odynophagia, stridor, drooling, hoarseness. Early mucosal exam may look deceptively mild while deep muscle necrosis progresses. |
| Acid (pH < 2) | Toilet bowl cleaners (hydrochloric acid), battery acid (sulfuric acid), metal cleaners, swimming pool chemicals. | Coagulative Necrosis: Precipitates surface tissue proteins, forming a thick protective eschar that limits deeper transmural penetration. Empties rapidly into stomach. | Severe gastric necrosis and pylorospasm, causing gastric perforation and peritonitis. Esophageal injury is usually less severe than alkali, but gastric scarring and pyloric stenosis are common late sequelae. |
Button Battery in the Esophagus: Catastrophic Perforation Emergency
A button battery lodged in the esophagus is an absolute life-or-death surgical emergency. Within 2 hours, the electrical current generated between battery poles electrolyzes tissue fluid, producing caustic sodium hydroxide (alkali liquefactive necrosis) that erodes directly into the trachea (tracheoesophageal fistula) or the aorta (fatal aortoesophageal hemorrhage). Radiographically, button batteries display a characteristic 'Double-Ring' or 'Halo' sign on AP view and a stepped-off bevel on lateral view, distinguishing them from smooth coins. While awaiting immediate emergent endoscopy, administer oral honey (10 mL PO every 10 minutes in children >= 1 year) or sucralfate suspension (10 mL PO) to neutralize local hydroxide production.
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