Implantable Cardioverter Defibrillator Versus Optimal Medical Therapy In Patients With Variant Angina Manifesting as Aborted Sudden Cardiac Death

Brief Summary

The purpose of this study is to determine whether ICD(Implantable Cardioverter Defibrillator) implantation on the top of optimal medical therapy in patients with variant angina manifesting as aborted sudden cardiac death reduces the incidence of the death from any cause compared with optimal medical therapy alone.