Early ganglion stellate blockade as part of two-step treatment algorithm suppresses electrical storm and need for intubation

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Authors

JIRAVSKÝ Otakar ŠPAČEK Radim CHOVANČÍK Jan NEUWIRTH Radek HUDEC Miroslav ŠKŇOUŘIL Libor ŠTĚPÁNOVÁ Radka SUCHACKOVA Paulina HECKO Jan FIALA Martin MIKLÍK Roman

Year of publication 2023
Type Article in Periodical
Magazine / Source HELLENIC JOURNAL OF CARDIOLOGY
MU Faculty or unit

Faculty of Medicine

Citation
Web https://www.sciencedirect.com/science/article/pii/S1109966623000593?via%3Dihub
Doi http://dx.doi.org/10.1016/j.hjc.2023.04.003
Keywords Stellate ganglion blockade; Electrical storm; ICD therapy; Ventricular arrhythmia; Neuromodulation
Description Background: For the treatment of patients with electrical storm (ES), we established a two-step algorithm comprising standard anti-arrhythmic measures and early ultrasound-guided stellate ganglion blockade (SGB). In this single-center study, we evaluated the short-term efficacy of the algorithm and tested the hypothesis that early SGB might prevent the need for intubations.Methods: Overall, we analyzed data for 70 ES events in 59 patients requiring SGB (mean age 67.7 +/- 12.4 years, 80% males, left ventricular ejection fraction 30.0% +/- 9.1%), all with implantable cardioverter-defibrillators (ICDs).Results: The mean time from ES onset to SGB was 13.2 +/- 12.3 hours. Percentage and mean absolute reduction in shocks at 48 hours after SGB reached 86.8% (-6.3 shocks), and anti-tachycardiac pacing (ATP) declined by 65.9% (-51.1 ATPs; all P < 0.001). Patients with the highest sustained ventricular arrhythmia (VA) burden (shocks >= 10/48 h; ATPs 10-99/48 h and >= 100/48 h) experienced the highest percentage decrease in ICD therapy (shocks -99.1%; ATPs-92.1% and -10 0.0%, respectively). For clinical response by defined criteria and two outcome periods (1/no sustained VA <= 48 hours post SGB, and 2/no ICD shock or <3 ATPs/day from day 3 to discharge/catheter ablation/day 8), 75.7% and 76.1% experienced complete response, respectively. Catecholamine support, no/low-dose beta-blocker therapy, polymorphic/ mixed-type VA, and baseline sinus rhythm versus atrial fibrillation were more frequent in patients with early arrhythmia recurrence. Temporary Horner's syndrome occurred in 67.1%, and no other adverse events were recorded. Intubation and general anesthesia during and after SGB were not needed.Conclusion: The presented two-step algorithm for treating ES proved efficacious and safe. The results support implementation of early SGB in routine ES management.(c) 2023 Hellenic Society of Cardiology.
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