A 48-year-old woman presents to the emergency department with acute right upper quadrant pain, fever (38.5°C), and jaundice. She reports a 6-hour history of severe colicky pain radiating to the right shoulder. On examination, she is tachycardic (HR 110/min), and Murphy's sign is positive. Ultrasound shows a dilated common bile duct (8 mm), multiple gallstones, and a stone impacted in the common bile duct. Liver function tests reveal elevated direct bilirubin (4.2 mg/dL), alkaline phosphatase (320 U/L), and transaminases (AST 280 U/L, ALT 320 U/L). What is the most appropriate next step in management?

Explanation

## Clinical Diagnosis This patient presents with **acute cholangitis** secondary to choledocholithiasis (common bile duct stone obstruction). The classic triad of Charcot's triad (fever, jaundice, right upper quadrant pain) is present, and imaging confirms a stone impacted in the common bile duct with biliary obstruction. ## Pathophysiology Choledocholithiasis causes: 1. Obstruction of bile flow 2. Increased intraluminal pressure 3. Bacterial translocation and sepsis (cholangitis) 4. Hepatic dysfunction with hyperbilirubinemia ## Management Algorithm ```mermaid flowchart TD A[Acute cholangitis + choledocholithiasis]:::outcome --> B{Patient stable?}:::decision B -->|Yes| C[ERCP with sphincterotomy]:::action B -->|No| D[Resuscitate, antibiotics, consider PTC]:::action C --> E[Stone extraction]:::action E --> F[Interval laparoscopic cholecystectomy in 4-6 weeks]:::action D --> G[Stabilize, then ERCP or PTC]:::action F --> H[Resolution]:::outcome ``` ## Why ERCP is the Gold Standard **Key Point:** ERCP with endoscopic sphincterotomy is the definitive treatment for choledocholithiasis and acute cholangitis in the acute phase. It is minimally invasive, has >90% success rate, and allows simultaneous stone extraction. **High-Yield:** ERCP should be performed within 24–48 hours of presentation in acute cholangitis. It relieves obstruction, allows bacterial drainage, and prevents septic shock. **Clinical Pearl:** After successful ERCP and stone extraction, laparoscopic cholecystectomy is performed 4–6 weeks later (after inflammation resolves) to prevent recurrent stones and cholecystitis. ## Comparison of Interventions | Intervention | Indication | Timing | Success Rate | Morbidity | |---|---|---|---|---| | ERCP + sphincterotomy | Choledocholithiasis, acute cholangitis | Acute (24–48 hrs) | >90% | Low (pancreatitis 3–5%) | | PTC | ERCP failure, altered anatomy, proximal stricture | Acute/subacute | 85–95% | Moderate (sepsis, bleeding) | | Open CBD exploration | ERCP failure, large stones, intrahepatic stones | Elective | >95% | High (morbidity, mortality) | | Conservative management | Mild symptoms, no sepsis | Not recommended in cholangitis | — | High risk of sepsis, organ failure | **Warning:** Delaying ERCP in acute cholangitis risks progression to septic shock and multi-organ failure. This patient is already febrile and jaundiced — she requires urgent decompression of the biliary tree.