The Unify Assura CRT-D, from the SJM Assura? family, is a downsized device with a smaller footprint. It has shock management options and is narrow in shape, while assuring the highest energy output delivery in the industry at 40 J. Without any compromises on sensitivity, 98.5% of the patients who use ShockGuard? and DecisionTx? programming were free of any inappropriate shocks. Lead noises can be differentiated from VT/VF occurrences with the SecureSense? RV Lead Noise Discrimination algorithm. It offers assured detection of 100% clinical VF and sustained as well as non-sustained RV lead noise can be detected at 97.1% and 90.4%, respectively.