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The EPISOD study: long-term outcomes.

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Summary
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Endoscopic sphincterotomy offers no benefit for post-cholecystectomy pain compared to sham intervention, even at 5 years. Further research is needed for effective management of Sphincter of Oddi dysfunction symptoms.

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Area of Science:

  • Gastroenterology
  • Endoscopic procedures
  • Biliary tract disorders

Background:

  • Sphincter of Oddi dysfunction (SOD) can cause post-cholecystectomy pain.
  • Previous 1-year follow-up showed no benefit of sphincterotomy over sham intervention.
  • This study reports long-term outcomes up to 5 years.

Purpose of the Study:

  • To evaluate the long-term efficacy of endoscopic sphincterotomy versus sham intervention for post-cholecystectomy pain.
  • To assess patient outcomes in Sphincter of Oddi dysfunction up to 5 years.

Main Methods:

  • 103 patients from the EPISOD study, blinded to treatment, were followed for a median of 58 months.
  • Success was defined by low pain scores (RAPID <6) and significant improvement on the Patient's Global Impression of Change (PGIC).
  • Exclusion criteria included repeat intervention or narcotic use.

Main Results:

  • Success rates were similar between sphincterotomy and sham groups by RAPID criteria (40% vs 42%).
  • Actively treated patients fared worse by PGIC criteria (37% vs 73%).
  • Patients receiving active treatment at any time had lower success rates (41%) compared to those never treated (62%).

Conclusions:

  • Endoscopic sphincterotomy is not superior to sham intervention for post-cholecystectomy pain in SOD.
  • Some criteria suggest sphincterotomy may be worse than sham.
  • ERCP is not recommended; further research is needed for effective SOD management.