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Open AccessArticle

Long-Term Follow-Up of Patients with Catecholaminergic Polymorphic Ventricular Arrhythmia

First Department of Medicine, Faculty of Medicine, University Medical Centre Mannheim (UMM), University of Heidelberg, Mannheim 68167, Germany
DZHK (German Center for Cardiovascular Research), Partner Site, Heidelberg-Mannheim, Mannheim 68167, Germany
Authors to whom correspondence should be addressed.
J. Clin. Med. 2020, 9(4), 903; (registering DOI)
Received: 7 March 2020 / Accepted: 10 March 2020 / Published: 25 March 2020
(This article belongs to the Section Cardiology)
Background: Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a rare inherited disorder causing life-threatening arrhythmias. Long-term outcome studies of the channelopathy are limited. Objective: The aim of the present study was to summarize our knowledge on CPVT patients, including the clinical profile treatment approach and long-term outcome. Methods: In this single center study, we retrospectively and prospectively collected data from nine CPVT patients and analyzed them. Results: We reviewed nine patients with CPVT in seven families (22% male), with a median follow-up time of 8.6 years. Mean age at diagnosis was 26.4 12 years. Symptoms at admission were syncope (four patients) and aborted cardiac arrest (four patients). Family history of sudden cardiac death was screened in five patients. In genetic analyses, we found five patients with ryanodine type 2 receptor (RYR2) mutations. Seven patients were treated with beta-blockers, and if symptoms persisted flecainide was added (four patients). Despite beta-blocker treatment, three patients suffered from seven adverse cardiac events. An implantable cardioverter defibrillator was implanted in seven patients (one primary, six secondary prevention). Over the follow-up period, three patients suffered from ventricular tachycardia (ten times) and five patients from ventricular fibrillation (nine times). No one died during follow-up. Conclusion: Our CPVT cohort showed a high risk of cardiac events. Family screening, optimal medical therapy and individualized treatment are necessary in affected patients in referral centers.
Keywords: CPVT; sudden cardiac death; ventricular tachyarrhythmia; ICD CPVT; sudden cardiac death; ventricular tachyarrhythmia; ICD
MDPI and ACS Style

Veith, M.; El-Battrawy, I.; Roterberg, G.; Raschwitz, L.; Lang, S.; Wolpert, C.; Schimpf, R.; Zhou, X.; Akin, I.; Borggrefe, M. Long-Term Follow-Up of Patients with Catecholaminergic Polymorphic Ventricular Arrhythmia. J. Clin. Med. 2020, 9, 903.

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