Zusammenfassung
Bei Patienten mit Ionenkanalerkrankungen treten in nahezu allen Fällen polymorphe ventrikuläre Tachykardien (VT), Torsade-de-Pointes-Tachykardien oder Kammerflimmern auf. Eine schnelle monomorphe VT ist eine absolute Rarität. Daher sollten implantierbare Kardioverter-Defibrillatoren (ICD) immer so eingestellt werden, dass sie erst bei hohen Herzfrequenzen therapieren, um unnötige Schocks oder Überstimulationen zu vermeiden. Während bei idiopathischem Kammerflimmern, wie z. B. bei DPP6-Mutation und der katecholaminergen polymorphen ventrikulären Tachykardie (CPVT), in Ruhe keinerlei EKG-Auffälligkeiten zu sehen sind, treten bei den anderen Ionenkanalerkrankungen bereits in Ruhe, wenn auch häufig nur transient, schon Alterationen auf. Diese sind für die Risikostratifizierung von nicht unerheblicher Bedeutung.
Abstract
In patients with ion channel disease the predominant arrhythmias are polymorphic ventricular tachycardias (VT), torsade de pointes tachycardia and ventricular fibrillation (VF). In only extremely rare cases is very rapid monomorphic ventricular tachycardia observed. This is why implantable cardioverter–defibrillators (ICDs) should always be programmed for treatment of VF only with high detection rates to avoid inappropriate discharges. In idiopathic VF and catecholaminergic polymorphic ventricular tachycardia (CPVT), no baseline electrocardiographic abnormalities can be detected, whereas in Brugada syndrome, long QT syndrome, early repolarisation syndrome and Anderson–Tawil syndrome alterations of the baseline ECG are very important to identify patients at risk.
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C. Wolpert, M. Vogel, C. Nagel, C. Herrera-Siklody und N. Rüb geben an, dass kein Interessenkonflikt besteht.
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Wolpert, C., Vogel, M., Nagel, C. et al. Ventrikuläre Arrhythmien bei Ionenkanalerkrankungen. Herzschr Elektrophys 28, 169–176 (2017). https://doi.org/10.1007/s00399-017-0510-6
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DOI: https://doi.org/10.1007/s00399-017-0510-6