Concomitant thoracoscopic left cardiac sympathectomy and RVOT epicardial ablation of the arrhythmogenic substrate in a patient with Long QT and Brugada syndromes related to uncommon sodium channel beta‐subunit mutation

Background Patients with Brugada syndrome (BrS) may experience recurrent ventricular arrhythmias (VAs). Catheter ablation is becoming an emerging paradigm for treatment of BrS. Objective To assess the efficacy and safety of catheter ablation in BrS in an updated systematic review. Methods We comprehensively searched the databases of Pubmed/Medline, EMBASE, and Cochrane Central Register of Controlled Trials from inception to 11th of August 2021. Results Fifty-six studies involving 388 patients were included. A substrate-based strategy was used in 338 cases (87%), and a strategy of targeting premature ventricular complex (PVCs)/ventricular tachycardias (VTs) that triggered ventricular fibrillation (VF) in 47 cases (12%), with combined abnormal electrogram and PVC/VT ablation in 3 cases (1%). Sodium channel blocker was frequently used to augment the arrhythmogenic substrate in 309/388 cases (80%), which included a variety of agents, of which ajmaline was most commonly used. After ablation procedure, the pooled incidence of non-inducibility of VA was 87.1% (95% confidence interval [CI], 73.4–94.3; I2 = 51%), and acute resolution of type I ECG was seen in 74.5% (95% CI [52.3–88.6]; I2 = 75%). Over a weighted mean follow up of 28 months, 7.6% (95% CI [2.1–24]; I2 = 67%) had recurrence of type I ECG either spontaneously or with drug challenge and 17.6% (95% CI [10.2–28.6]; I2 = 60%) had recurrence of VA. Conclusion Catheter ablation appears to be an efficacious strategy for elimination of arrhythmias or substrate associated with BrS. Further study is needed to identify which patients stand to benefit, and optimal provocation protocol for identifying ablation targets. Graphical abstract

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Efficacy and safety of catheter ablation for Brugada syndrome: an updated systematic review

Kotake

Barua

Kazi

et al. 2022

Clin Res Cardiol

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Ablation therapy of postural orthostatic tachycardia syndrome, inappropriate sinus tachycardia and primary electrical diseases: new insights in invasive treatment options in severely symptomatic patients

Monaco

Sorgente

Ramak

et al. 2021

Herzschr Elektrophys

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Concomitant thoracoscopic left cardiac sympathectomy and RVOT epicardial ablation of the arrhythmogenic substrate in a patient with Long QT and Brugada syndromes related to uncommon sodium channel beta‐subunit mutation

Cited by 2 publications

References 15 publications

Efficacy and safety of catheter ablation for Brugada syndrome: an updated systematic review

Efficacy and safety of catheter ablation for Brugada syndrome: an updated systematic review

Ablation therapy of postural orthostatic tachycardia syndrome, inappropriate sinus tachycardia and primary electrical diseases: new insights in invasive treatment options in severely symptomatic patients

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