State-of-the-art implantable cardioverter defibrillators (ICD) provide a variety of algorithms to optimize episode classification and to minimize the danger of delivering inadequate therapies. An important role in checking the correctness of episode detection, classification and treatment plays the intracardiac electrogram (IEGM), which is stored inside the ICD for every detected episode. However, to analyze the stored IEGM, the physician has to interrogate the implant, i.e. the patient has to visit the ICD ambulance for follow-up. As a result, follow-ups are performed principally to corroborate that the ICD has correctly classified and treated detected tachycardia episodes, to optimize the parameters and in case of adverse event detection, to modify the programmation.