REACTION is an observational study in which patients will be followed as for clinical practice and no specific study tests/procedures will be perfprmed. After implanting a device, the patient will be assigned to an arm or to the other based on the technology of the device (bluetooth or RF) he/she wears, if he/she gives the consent to partecipate. It is not a randomized study. Patients will be enrolled consecutively until reaching the sample defined for both the arms.
The objective of this observational study is to assess clinical benefits of innovative features (e.g. Bluetooth technology and smartphone patient applications) in a patient population that is implanted with standard indication for implantable cardiac defibrillator.