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Clusters of ventricular tachycardias signify impaired survival in patients with idiopathic dilated cardiomyopathy and implantable cardioverter defibrillators

^a Department of Cardiology, St. Georg’s Hospital, Hamburg, Germany
^b Department of Cardiology, Angiology and Institute for Research in Arteriosclerosis, Westfälische Wilhelms-University, Münster, Germany

View larger version (20K): [in a new window]   Figure 1 Cluster-free survival in different NYHA-classes at baseline. NYHA = New York Heart Association.

View larger version (21K): [in a new window]   Figure 2 Cluster-free survival and inducible VT during baseline programmed ventricular stimulation. Patients in whom no VT could be induced and patients in whom VF or polymorphic VTs were induced were taken together in the no-monomorphic-VT group, because they did not differ significantly in cluster-free survival. Superior axis describes VTs with left-to-right superior axis, inferior axis describes VTs with left-to-right inferior axis.

View larger version (23K): [in a new window]   Figure 3 Survival free of heart transplantation in patients with single or no VTs and VTCs after implantation. VT = ventricular tachycardias; VTC = ventricular tachycardia cluster.