Rescue ERCP and insertion of a small-caliber pancreatic stent to prevent the evolution of severe post-ERCP pancreatitis: a case-controlled series.

INTRODUCTION: Recently prophylactic placement of a trans-sphincteric pancreatic stent has successfully been applied to prevent post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis. Rescue ERCP and emergency application of small-caliber pancreatic stents during the early course of post-ERCP pancreatitis as a possible endoscopic therapy has not been reported yet.

METHODS: All patients who underwent ERCP were hospitalized for at least 24 h, with routine laboratory testing of amylase levels. Out of 1,225 ERCPs, evolution of severe post-ERCP pancreatitis was anticipated in six consecutive patients, based on severe pancreatic pain attack, more than tenfold elevation of serum amylase levels at 8 and 24 h, and moderate rise of white blood cell (WBC) and C-reactive protein (CRP) levels. Rescue ERCP and emergency application of small-caliber (4-5F, 4-cm, Geenen stent) pancreatic stents were successfully performed in all patients within 8-20 h after the initial ERCP.

RESULTS: Moderate to severe papillary oedema was observed in all patients during the rescue ERCP. Pancreatic pain was promptly reduced after the rescue pancreatic drainage procedure and completely diminished within 24 h after pancreatic stenting. Serum amylase levels were exponentially reduced and normalized within 72 h in all patients; no pancreatic necrosis or any other late complications were observed. Pancreatic stents could be safely removed a few days later.

CONCLUSION: Rescue pancreatic stenting with small-caliber prophylactic pancreatic stents seems to be a safe and effective procedure that might be feasible to stop the evolution of severe post-ERCP pancreatitis, but prospective controlled studies are clearly demanded to support this innovative approach.