A Systematic Review and Meta-Analysis of The Efficacy of Endoscopic Ultrasound Guided Celiac Plexus Blocks for Chronic Pancreatitis Pain.

Chronic pancreatitis is a globally prevalent progressive disease, with pain affecting up to 90% of patients, significantly impairing quality of life and leading to high rates of disability, hospitalizations, and opioid dependence. Pain management is crucial in treating chronic pancreatitis, with endoscopic ultrasound-guided celiac plexus block (EUS-CPB) recognized as an interventional option. This systematic review and meta-analysis, following PRISMA guidelines, synthesized data from 12 studies (5 randomized control trials and 7 observational) on the efficacy of EUS-CPB in managing chronic pancreatitis pain. The overall analysis revealed a significant pain relief proportion of 0.64 (n=612) with moderate heterogeneity. Subgroup analyses revealed a proportion of 0.72 in RCTs and 0.59 in observational studies. Common complications included diarrhea and exacerbation of abdominal pain, with no reported mortality. Despite variations in efficacy due to study heterogeneity and patient differences, the findings suggest EUS-CPB as a safe and effective option, with effects lasting weeks to months. Recent studies have demonstrated the applicability of EUS-CPB across ethnically diverse and pediatric populations. However, limitations including small sample sizes and study variability highlight the need for personalized treatment approaches. Future larger randomized sham-controlled trials are recommended to better assess the duration of pain relief and impact on opioid use.