Study of Stellate Ganglion Block Treatment for Adults with Arrhythmic Storm Resistant to Medication

What this Trial Is About

Researchers are studying patients experiencing arrhythmic storm, a serious heart condition characterized by frequent and sustained ventricular arrhythmias that do not respond to standard antiarrhythmic drugs. This international multicenter observational study aims to evaluate the safety and effectiveness of Percutaneous Stellate Ganglion Block PSGB in reducing arrhythmic relapses in such emergency cases. The study is coordinated by Fondazione IRCCS Policlinico San Matteo of Pavia, Italy, and addresses a gap in large-scale data on this procedure. Participants who meet the criteria will receive PSGB using either the anatomical or echo-guided approach. Depending on patient needs, the procedure may involve a single anesthetic injection or continuous anesthetic infusion via a catheter connected to a pump. The study compares the number of arrhythmic events and defibrillations before and after PSGB treatment and notes any complications occurring within 12 hours post-procedure. During participation, patients will be monitored closely for arrhythmic relapses using defibrillation counts and anti-tachycardia pacing data. Complications such as hematomas, vascular injuries, and nerve damage will be recorded. Data are collected using a secure electronic system, with effectiveness measured by arrhythmic event reduction in the 12 hours following PSGB compared to the 12 hours prior. The study plans to enroll patients over several years with ongoing safety and outcome evaluations.

In-hospital Stellate Ganglion Block for Arrhythmic Storm