Bedside Monitoring of Microenvironmental Changes in Infected Pancreatic Collections

A sterile, miniaturized, biocompatible monitoring probe (≤1.5 mm diameter) is temporarily introduced into the cavity of an infected walled-off pancreatic necrosis (WOPN) during standard percutaneous drainage. The device is designed to measure local microenvironmental parameters in situ, such as acidity and related indicators, without interfering with fluid evacuation. Measurements are performed intermittently or continuously for up to 72 hours and are used solely for observational purposes. This intervention is distinct from standard WOPN management, as it allows real-time assessment of local physicochemical conditions, which are not accessible through systemic biomarkers or imaging alone.