Prediction of major arrhythmic outcomes in ischaemic cardiomyopathy: value of hibernating myocardium in positron emission tomography/computed tomography.

Aims: Known predictors of major arrhythmic events (MAEs) in patients with ischaemic cardiomyopathy (ICM) include previous MAE and left ventricular ejection fraction (LVEF) ≤ 35%. Myocardial scars detected by perfusion imaging in ICM have been linked to MAE, but the prognostic significance of hibernating myocardium (HM) is unclear. The objective was to predict MAEs from combined 13N-ammonia (NH3) and 18F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) in ICM.