text: <unk>  study may be helpful in the diagnosis of<unk>  syndrome. Some groups have advocated that programmed electrical stimulation (PES) be performed to induce ventricular fibrillation for risk assessment in<unk>  patients other groups have not reproduced the predictive value of these tests, so the value of programmed electrical stimulation (PES) and inducibility remains controversial.
option_0: Brugada syndrome electrophysiologic studies
option_1: Myasthenia gravis electrocardiogram
option_2: Short QT syndrome electrophysiologic studies
option_3: Guillain-Barré syndrome electrocardiogram
option_4: Bartter syndrome electrocardiogram
option_5: Adams-Stokes syndrome electrocardiogram
option_6: Cardiomyopathy electrocardiogram
option_7: Haff disease electrocardiogram