Clinical and Laboratory Predictors of Long-Term Outcomes after Catheter Ablation for a Ventricular Electrical Storm

• Published in: Journal of interventional cardiology 2024-02, Vol.2024, p.5524668-13
• Main Authors: Sławiński, Grzegorz, Hawryszko, Maja, Dyda-Kristowska, Julia, Królak, Tomasz, Kempa, Maciej, Świetlik, Dariusz, Kozłowski, Dariusz, Daniłowicz-Szymanowicz, Ludmiła, Lewicka, Ewa
• Format: Article
• Language: English
• Subjects: Ablation (Surgery); Care and treatment; Medical research; Medicine, Experimental; Tachycardia
• ISSN: 0896-4327; 1540-8183
• DOI: 10.1155/2024/5524668

Background. Ventricular electrical storm (VES) is characterized by the occurrence of multiple episodes of sustained ventricular arrhythmias (VA) over a short period of time. Radiofrequency ablation (RFA) has been reported as an effective treatment in patients with ventricular tachycardia (VT). Objective. The aim of the present study was to indicate the short-term and long-term predictors of recurrent VA after RFA was performed due to VES. Methods. A retrospective, single-centre study included patients, who had undergone RFA due to VT between 2012 and 2021. In terms of the short-term (at the end of RFA) effectiveness of RFA, the following scenarios were distinguished: complete success: inability to induce any VT; partial success: absence of clinical VT; failure: inducible clinical VT. In terms of the long-term (12 months) effectiveness of RFA, the following scenarios were distinguished: effective ablation: no recurrence of any VT; partially successful ablation: VT recurrence; ineffective ablation: VES recurrence. Results. The study included 62 patients. Complete short-term RFA success was obtained in 77.4% of patients. The estimated cumulative VT-free survival and VES-free survival were, respectively, 28% and 33% at the 12-month follow-up. Ischemic cardiomyopathy and complete short-term RFA success were predictors of long-term RFA efficacy. Neutrophil to lymphocyte ratio (NLR) and GFR