No abstract

High-intensity exercise was a strong and independent marker of life-threatening VA in AC patients, independent of exercise duration. AC patients could be advised to restrict their exercise intensity.

History of high-intensity exercise, electrocardiographic T-wave inversions ≥V, and greater LV mechanical dispersion were strong predictors of life-threatening ventricular arrhythmia. Patients without any of these risk factors had minimal risk, whereas ≥2 risk factors increased the risk dramatically. This may help to make decisions on primary preventive implantable cardioverter defibrillator (ICD) therapy.