ArticleEuropace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology2025
Different underlying aetiologies in patients presenting with ventricular tachycardia fulfilling task force criteria for arrhythmogenic right ventricular cardiomyopathy: initial suspicion based on the 12-lead electrocardiogram.
Article in Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
aimsThe task force criteria (TFC) for arrhythmogenic right ventricular cardiomyopathy (ARVC) are highly sensitive but lack specificity. Atypical RV involvement (aRVi) may indicate different underlying aetiologies and prognosis, requiring specific therapeutic interventions. We aimed to evaluate the role of the baseline 12-lead ECG for initial suspicion of aRVi.
methodsFrom the Netherlands Heart Institute Arrhythmogenic Cardiomyopathy (NHI-ACM) registry, patients were selected who (i) fulfilled TFC for definite ARVC, (ii) presented with sustained ventricular tachycardia (VT), and (iii) underwent genetic testing. The first available ECG after VT was evaluated. PR prolongation ≥220 ms and/or a surface area of the maximum R'-wave in V1-V3 of ≥1.65 mm2 was defined as an aRVi-ECG. Patients with an ARVC-related pathogenic/likely pathogenic variant (P/LP+) were classified as 'ARVC'. Data of P/LP- were reviewed by an expert panel and classified as either 'ARVC' or 'different aetiology' based on consensus.
resultsA total of 159 patients were included (122 P/LP+ and 37 P/LP- patients). Nineteen patients had an aRVi-ECG [11 (9%) P/LP+ vs. 8 (22%) P/LP-, P = 0.038]. Of the P/LP- patients, 17 (46%) were classified as 'different aetiology' (e.g. myocarditis, ischaemia, sarcoidosis), including all 8 patients with an aRVi-ECG. Among the P/LP+ patients with an aRVi-ECG, 46% carried the p.Arg14del phospholamban pathogenic variant, and 64% died compared to 15 and 19% of P/LP+ patients without an aRVi-ECG, respectively (both P < 0.01).
conclusionIn P/LP- patients presenting with VT and fulfilling TFC, an aRVi-ECG should raise suspicion for a different underlying aetiology. In P/LP+ patients, an aRVi-ECG may identify those with poor outcome.
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