Management of Chronic Pancreatitis Pain

Introduction to Management Options

• Surgical intervention should be considered over endoscopic therapy for long-term treatment of patients with painful obstructive chronic pancreatitis, as it provides better long-term outcomes for pain relief and quality of life 1

Multimodal Pain Management Approach

• Non-opioid analgesics including NSAIDs should be used as initial treatment for pain control in chronic pancreatitis 2
• Oral pain medications should be used for mild pain, while IV pain medications may be necessary for more severe pain 2, 3
• Dilaudid is preferred over morphine or fentanyl in non-intubated patients with chronic pancreatitis 2
• Patient-controlled analgesia (PCA) should be integrated with other pain management strategies for better pain control 2
• Epidural analgesia should be considered as an alternative or adjunct to intravenous analgesia in a multimodal approach 2

Interventional Procedures

• Endoscopic intervention is a reasonable alternative to surgery for suboptimal surgical candidates or those who prefer a less invasive approach 4, 1
• For pancreatic duct stones causing obstruction, small (≤5 mm) main pancreatic duct stones can be treated with pancreatography and conventional stone extraction 4, 1
• Larger stones may require extracorporeal shockwave lithotripsy (ESWL) and/or pancreatoscopy with intraductal lithotripsy 4, 1
• For pancreatic duct strictures, prolonged stent therapy (6-12 months) is effective for treating symptoms and remodeling main pancreatic duct strictures 4, 1
• The preferred approach is placing and sequentially adding multiple plastic stents in parallel (upsizing) 4, 1
• Celiac plexus block should not be routinely performed for pain management in chronic pancreatitis 4, 5, 1
• It may be considered only in selected patients with debilitating pain when other therapeutic measures have failed 4, 1
• The efficacy of EUS-guided celiac plexus neurolysis (CPN) is relatively low for chronic pancreatitis (51-59% pain relief) compared to pancreatic cancer (72-80% pain relief) 5
• Repeated injections for chronic pancreatitis should be avoided to prevent development of major complications 5
• Common adverse events include diarrhea and orthostatic hypotension; major adverse events (abscess formation, intravascular injection, paralysis) occur in <1% of patients 1
• Surgical intervention provides better long-term outcomes for pain relief than endoscopic therapy in patients with painful obstructive chronic pancreatitis 4, 1
• Longitudinal pancreaticojejunostomy is the most appropriate surgical management for chronic pancreatitis with pancreatic duct ectasia 1
• The evidence for celiac plexus block in chronic pancreatitis is limited, and its use should be restricted to carefully selected cases 5, 1

Management of Chronic Pancreatitis Pain

Multimodal Pain Management Approach

• The American Gastroenterological Association recommends ensuring abstinence from alcohol as a fundamental first step in pain management, and providing pancreatic enzyme supplements to improve nutritional status and quality of life 6
• The European Society for Clinical Nutrition and Metabolism suggests that normal food with pancreatic enzyme supplementation is sufficient in most cases (>80% of patients) 6
• The British Society of Gastroenterology recommends following a progressive analgesic ladder from non-opioids to opioids for moderate-to-severe pain, and administering analgesics before meals to reduce postprandial pain and improve food intake 7

Interventional Procedures

• The European Society of Gastrointestinal Endoscopy states that neurolytic celiac plexus block is NOT recommended for routine pain management in chronic pancreatitis, and EUS-guided celiac plexus neurolysis (CPN) has relatively low efficacy (51-59%) for chronic pancreatitis compared to pancreatic cancer (72-80%) 8
• The American Society for Gastrointestinal Endoscopy recommends considering endoscopic intervention for suboptimal surgical candidates or those preferring less invasive approaches, and using conventional ERCP with standard stone extraction techniques for pancreatic duct stones ≤5mm 9

Surgical Options

• The American College of Gastroenterology recommends surgical intervention for better long-term outcomes for pain relief than endoscopic therapy in obstructive chronic pancreatitis, and notes that the ESCAPE trial and other randomized studies demonstrated higher complete or partial pain relief with early surgery compared to endotherapy 9

Nutritional Support

• The European Society for Clinical Nutrition and Metabolism suggests providing pancreatic enzyme supplements to maintain weight and increase quality of life, and considering medium chain triglycerides (MCT) if adequate weight gain cannot be achieved and steatorrhea persists 6
• The American Society for Parenteral and Enteral Nutrition recommends a diet rich in carbohydrates and protein (1.0-1.5 g/kg), with moderate fat (30% of calories) 6

Monitoring and Follow-up

• The American Diabetes Association notes that monitoring for complications including diabetes mellitus, which occurs in 20-30% of patients with severe pancreatic insufficiency, is crucial 6
• The National Institute of Diabetes and Digestive and Kidney Diseases recommends assessing for vitamin deficiencies (A, D, E, K) resulting from steatorrhea, and evaluating for depression, which is common in pancreatic cancer patients and may require specific treatment 6, 7