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Obstructive Jaundice in Surgery

Definition

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Pathophysiology

• Conjugated (direct) bilirubin accumulates in blood - accounts for >50% of the total bilirubin elevation
• Bile salts fail to reach the intestine, impairing absorption of fat-soluble vitamins (A, D, E, K) - leading to coagulopathy
• Absence of bile in the gut produces clay-colored (acholic) stools and dark urine (bilirubinuria)
• Urinary urobilinogen is absent (unlike hemolytic jaundice where it is elevated)
• Cholestasis impairs clotting factors and immunologic responses, raising the risk for cholangitis

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Causes

Malignant (painless, progressive jaundice - typical presentation)

Benign (often painful, fluctuating jaundice)

• Choledocholithiasis - most common overall cause; 5-10% of laparoscopic cholecystectomy patients have CBD stones
• Primary or secondary sclerosing cholangitis
• Benign biliary strictures (post-surgical)
• Choledochal cyst
• Parasites (Ascaris, Clonorchis)
• Hemobilia
• Pancreatic pseudocysts
• Pseudotumoral chronic pancreatitis
• Duodenal diverticulum

Congenital

• Biliary atresia
• Caroli's disease

Clinical pearl: Painful obstructive jaundice = most likely stones. Painless, progressive jaundice = most likely malignancy. Fluctuating jaundice = characteristic of CBD stone. - Pye's Surgical Handicraft 22e, p. 285

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Clinical Features

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Investigations

Laboratory Tests

Vitamin K test: If PT is prolonged and returns to normal after IV Vitamin K → posthepatic jaundice. If no response → hepatocellular jaundice. - Pye's Surgical Handicraft 22e

Imaging (ordered by sequence)

1. Transabdominal Ultrasound (first-line)

• Dilated biliary system: entire system including GB dilated if obstruction at lower CBD; only intrahepatic ducts dilated if hilar obstruction
• Detects gallstones, liver masses, GB wall thickening
• Sensitivity for CBD stones: only ~21-63% - often insufficient alone

2. CT Scan (abdomen + pelvis with contrast)

• Highly sensitive for pancreatic tumors >2 cm
• Identifies level and cause of obstruction
• Assesses vascular invasion, lymphadenopathy, distant metastases

3. MRCP (Magnetic Resonance Cholangiopancreatography)

• Overall sensitivity ~95% for biliary obstruction - best non-invasive test
• Non-invasive "roadmap" of the biliary tree
• Test of choice for CBD stones (non-invasive) - but has no therapeutic capability

4. Endoscopic Ultrasound (EUS)

• Detects tumors at hepatic hilum, biliary ducts, ampullary region, pancreatic head
• Guides staging: vascular invasion, local spread, lymph node metastases
• Fine-needle aspiration (FNA): sensitivity 84-91%, specificity 71-100% for biliary strictures

5. ERCP (Endoscopic Retrograde Cholangiopancreatography)

• Primarily therapeutic rather than diagnostic
• Side-viewing duodenoscope cannulates the major papilla
• Identifies location, character, and length of strictures
• Can obtain bile, pancreatic juice, brush cytology in same session
• Cannulation success rate: >90%
• Cannot delineate upper biliary tract if obstruction is complete

6. Percutaneous Transhepatic Cholangiography (PTC)

• Used when ERCP fails or anatomy is altered (e.g., post-Whipple, Roux-en-Y)
• Allows external biliary drainage, stent placement
• Higher complication rate than ERCP

7. Liver Biopsy

• Rarely required purely for jaundice diagnosis
• Contraindicated if: bleeding diathesis, PT prolonged and not correctable with Vit K, platelets <50,000/mm³

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ASGE Risk Stratification for Choledocholithiasis

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Management

Preoperative Preparation (for surgical patients)

• Old age, malnutrition, ongoing biliary infection, malignancy, high serum urea

1. Vitamin K (20 mg IV) - normalizes PT within 12-24 hours if liver function intact; repeat if still elevated
2. Fresh Frozen Plasma (FFP) - if coagulopathy not corrected by Vit K
3. Renal protection - aggressive IV hydration, mannitol; jaundiced patients are at high risk for acute tubular necrosis and hepatorenal syndrome
4. Antibiotics - broad-spectrum prophylaxis for cholangitis risk
5. Nutritional support - correct malnutrition preoperatively
6. Biliary drainage (if cholangitis present) - before any elective procedure

Non-Operative (Interventional) Management

Endoscopic (ERCP-based) - Preferred first approach

• Sphincterotomy - for stone extraction
• Balloon/basket extraction - CBD stone removal
• Plastic stents - benign strictures, short-term drainage
• Self-expanding metal stents (SEMS) - malignant obstruction, superior patency, preferred for life expectancy >3 months (PMID 38655140 - 2024 meta-analysis confirms SEMS superior to plastic stents in malignant obstruction)
• ERCP with biliary decompression <48 hours is associated with a nearly twofold reduction in mortality in acute cholangitis (per Tokyo 2018 guidelines)

Percutaneous Transhepatic Biliary Drainage (PTBD)

• Inserted as endoprosthesis (2-3.5 mm diameter)
• Used when ERCP is not technically feasible
• Can become blocked by debris and sludge
• Requires experienced interventional radiologist

Preoperative Biliary Drainage - Controversy

• Theoretically allows biliary infection to subside, corrects malnutrition, improves liver function
• However, controlled studies have not demonstrated reduction in operative mortality or morbidity - remains controversial (PMID 40422081 - 2025 Bayesian network meta-analysis) - Pye's Surgical Handicraft 22e, p. 285

Surgical Management

For Benign Causes (Stones)

• Laparoscopic CBD exploration with stone clearance + cholecystectomy
• Open choledochotomy + T-tube drainage (if laparoscopic approach fails or not available)
• Transduodenal sphincteroplasty - for impacted stones at ampulla

For Malignant Causes

• Whipple procedure (pancreaticoduodenectomy) - curative intent; 5% operative mortality in specialist centers
• Palliative biliary bypass: choledochojejunostomy or cholecystojejunostomy (if unresectable)
• Palliative duodenal bypass: gastrojejunostomy (for duodenal obstruction)

• Extended hepatic resection (right/left hepatectomy ± caudate lobe)
• Biliary reconstruction with hepaticojejunostomy

• Whipple procedure
• Better prognosis than pancreatic Ca

• Endoscopic or percutaneous stenting (definitive palliation)
• Metal stents preferred for durability

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Complications of Obstructive Jaundice

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Special Situations

Charcot's Triad

Reynolds' Pentad

Courvoisier's Law

Mirizzi Syndrome

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Summary Algorithm

Jaundice
   ↓
Is it conjugated (direct) hyperbilirubinaemia?
   ↓ Yes
Obstructive jaundice suspected
   ↓
Ultrasound abdomen (first line)
   ↓
Dilated ducts?
   ├─ Yes → CT / MRCP to define level and cause
   │         ↓
   │    Stones → ERCP (therapeutic) → if fails → surgery (lap. CBD exploration)
   │    Malignancy → EUS + FNA to stage → resectable? → Whipple/hepatectomy
   │                                              → Unresectable? → stent (SEMS)
   └─ No → Consider hepatocellular disease / intrahepatic cholestasis

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• Current Surgical Therapy 14e (Sameer Khan, Vikesh K. Singh), pp. 574-580
• Pye's Surgical Handicraft 22e, pp. 285, 275-280
• 2025 Bayesian network meta-analysis on preoperative biliary drainage: Sun et al., Int J Surg 2025 (PMID 40422081)
• 2024 meta-analysis on biliary drainage for malignant obstruction: Wang et al., Front Oncol 2024 (PMID 38655140)