Long-term outcome of patients with unexplained syncope treated with an electrophysiologic-guided approach in the implantable cardioverter-defibrillator era
Suneet Mittal, MDa,
Sei Iwai, MDa,
Kenneth M. Stein, MD, FACCa,
Steven M. Markowitz, MD, FACCa,
David J. Slotwiner, MDa and
Bruce B. Lerman, MD, FACCa
a Department of Medicine, Division of Cardiology, the New York HospitalCornell University Medical Center, New York, New York 10021, USA

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Figure 1 Arrhythmia-free survival in ICD recipients. This Kaplan-Meier curve demonstrates the likelihood of survival without recurrent ventricular tachycardia or fibrillation in patients with syncope receiving an ICD for the management of inducible ventricular tachycardia. The numbers at the bottom represent the number of patients at risk (N).
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Figure 2 Comparison of survival between inducible and noninducible patients. This Kaplan-Meier curve compares the overall survival for patients with (dashed line) and without (solid line) inducible ventricular tachycardia at EP study. Despite therapy with ICDs, inducible patients had a markedly worse long-term outcome than did noninducible patients. The numbers at the bottom represent the number of patients at risk. I: inducible group; NI: noninducible group.
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