Lingjin Meng1, Chi-Hong Tseng2, Kalyanam Shivkumar1, Olujimi Ajijola1. 1. UCLA Cardiac Arrhythmia Center and Neurocardiology Research Center of Excellence, University of California, Los Angeles, CA. 2. Division of General Internal Medicine and Health Services Research, University of California, Los Angeles, CA.
Abstract
BACKGROUND: The efficacy of percutaneous stellate ganglion block (SGB) for managing electrical storm (ES) is not well understood. OBJECTIVE: To characterize the efficacy of SGB as a treatment for ES. METHODS: We conducted literature searches using PubMed/Medline and Google Scholar, for mixed combinations of terms including "stellate ganglion block", *ganglion block (ade)", "sympathetic block (ade)" and "arrhythmia", "ventricular arrhythmia (VA)" or "tachycardia" (VT), "ventricular fibrillation" (VF), "electrical storm". Inclusion criteria were presentation with guideline-defined ES and treatment with SGB. Exclusion criteria: presentation with any supraventricular arrhythmia, VA without ES, or surgical sympathectomy. Studies lacking basic demographic data, arrhythmia description, and outcomes were excluded. RESULTS: Of 3,374 publications reviewed, 38 patients from 23 studies met study criteria (52 ± 19.1 years, 11 F, 17 with ischemic cardiomyopathy). Anti-arrhythmics were used in all patients. Mean Left ventricular ejection fraction was 31 ± 10%. ES was triggered by acute myocardial infarction in 15 patients and QT prolongation in 7 patients. The most common local anesthetic used for SGB was bupivacaine (0.25-0.5%). SGB resulted in a significant decrease in VA burden (12.4±8.8 vs. 1.04±2.12 episodes/day, p< 0.001) and number of external and ICD shocks (10.0±9.1 vs. 0.05±0.22 shocks/day, p< 0.01). Following SGB, 80.6% of patients survived to discharge. CONCLUSION: SGB is an effective acute treatment for ES. However, larger prospective randomized studies are needed to better understand the role of SGB in ES and other VAs.
BACKGROUND: The efficacy of percutaneous stellate ganglion block (SGB) for managing electrical storm (ES) is not well understood. OBJECTIVE: To characterize the efficacy of SGB as a treatment for ES. METHODS: We conducted literature searches using PubMed/Medline and Google Scholar, for mixed combinations of terms including "stellate ganglion block", *ganglion block (ade)", "sympathetic block (ade)" and "arrhythmia", "ventricular arrhythmia (VA)" or "tachycardia" (VT), "ventricular fibrillation" (VF), "electrical storm". Inclusion criteria were presentation with guideline-defined ES and treatment with SGB. Exclusion criteria: presentation with any supraventricular arrhythmia, VA without ES, or surgical sympathectomy. Studies lacking basic demographic data, arrhythmia description, and outcomes were excluded. RESULTS: Of 3,374 publications reviewed, 38 patients from 23 studies met study criteria (52 ± 19.1 years, 11 F, 17 with ischemic cardiomyopathy). Anti-arrhythmics were used in all patients. Mean Left ventricular ejection fraction was 31 ± 10%. ES was triggered by acute myocardial infarction in 15 patients and QT prolongation in 7 patients. The most common local anesthetic used for SGB was bupivacaine (0.25-0.5%). SGB resulted in a significant decrease in VA burden (12.4±8.8 vs. 1.04±2.12 episodes/day, p< 0.001) and number of external and ICD shocks (10.0±9.1 vs. 0.05±0.22 shocks/day, p< 0.01). Following SGB, 80.6% of patients survived to discharge. CONCLUSION: SGB is an effective acute treatment for ES. However, larger prospective randomized studies are needed to better understand the role of SGB in ES and other VAs.
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