Figure 6. Graph shows survival curves as a function of left ventricular ejection fraction in 331 patients (studied retrospectively) who had out-of-hospital cardiac arrest and were treated with an ICD.

(Adapted and reproduced with the permission of the publisher (www.lww.com) and author from: Powell AC, Fuchs T, Finkelstein DM, et al. Influence of implantable cadioverter-fibrillators on the long-term prognosis of survivors of out-of-hospital cardiac arrest. Circulation 1993 Sep;88(3):1083-92, Figure 1.)⁷⁶