Fig. 4From: Cycle length of nonsustanied ventricular tachycardias among ICD patients: implications on subsequent appropriate therapiesKaplan–Meier estimates of the probability of appropriate therapies due to VF according to the previous incidence of fast NSVT episodes. Patients with at least one episode of NSVT with CL ≤ 300 ms (n = 27) had a significantly higher subsequent incidence of appropriate therapies due to VF than subjects without NSVTs (n = 165) or with only slow NSVT episodes (n = 224)Back to article page