NRAC Issue #1577 ADDENDUM May 10, 2006 PRODUCT a) Guidant CONTAK RENEWAL 3 (models H170, H175) CONTAK RENEWAL 3 HE (models H177, H179) Cardiac Resynchronization Therapy Defibrillator (CRT-D). Sterile EO. Cardiac resynchronization therapy defibrillators (CRT-D) provide ventricular tachyarrhythmia and cardiac resynchronization therapies. Ventricular tachyarrhythmia therapy is for the treatment of ventricular tachycardia (VT) and ventricular fibrillation (VF), rhythms that are associated with sudden cardiac death (SCD). Cardiac resynchronization therapy is for the treatment of heart failure (HF) and uses biventricular electrical stimulation to synchronize ventricular contractions. Cardioversion/defibrillation therapies include a range of low-and high-energy shocks using either a biphasic or monophasic waveform RECALL NUMBER # Z-0825-06; PRODUCT b) Guidant CONTAK RENEWAL 4 (models H190, H195) CONTAK RENEWAL 4 HE (model H197). Cardiac Resynchronization Therapy Defibrillator (CRT-D). Sterile EO. Cardiac resynchronization therapy defibrillators (CRT-D) provide ventricular tachyarrhythmia and cardiac resynchronization therapies. Ventricular tachyarrhythmia therapy is for the treatment of ventricular tachycardia (VT) and ventricular fibrillation (VF), rhythms that are associated with sudden cardiac death (SCD). Cardiac resynchronization therapy is for the treatment of heart failure (HF) and uses biventricular electrical stimulation to synchronize ventricular contractions. Cardioversion/defibrillation therapies include a range of low-and high-energy shocks using either a biphasic or monophasic waveform, RECALL NUMBER # Z-0826-06; PRODUCT c) Guidant CONTAK RENEWAL 4 AVT (model M170). Cardiac Resynchronization Therapy Defibrillator (CRT-D). Sterile EO. Cardiac resynchronization therapy defibrillators (CRT-D) provide both atrial and ventricular tachyarrhythmia and cardiac resynchronization therapies. Ventricular tachyarrhythmia therapy is for the treatment of ventricular tachycardia (VT) and ventricular fibrillation (VF), rhythms that are associated with sudden cardiac death (SCD). Atrial tachyarrhythmia therapy is for the treatment of supraventricular tachycardia (SVT) and atrial fibrillation (AF). Cardiac resynchronization therapy is for the treatment of heart failure (HF) and uses biventricular electrical stimulation to synchronize ventricular contractions. This device also uses accelerometer-based adaptive-rate bradycardia therapy. Cardioversion/defibrillation therapies include a range of low-and high-energy shocks using either a biphasic or monophasic waveform, RECALL NUMBER # Z-0827-06; PRODUCT d) Guidant VITALITY HE Implantable Cardioverter Defibrillator (model T180). Sterile EO. This ICD is designed to detect and terminate ventricular tachycardia (VT) and ventricular fibrillation (VF) and provide bradycardia therapy (atrial and ventricular pacing). Therapies include both low- and high-energy shocks using either a biphasic or monophasic waveform. Bradycardia pacing, including adaptive-rate features, is available to detect and treat bradyarrhythmias and to support the cardiac rhythm after defibrillation therapy. The device offers dual-chamber bradycardia features (atrial and/or ventricular pacing and sensing), RECALL NUMBER # Z-0828-06 CODE a) Model H170, serial numbers: 364406, 364446, 364542, 364576, 364582, 364586, 364587, 364590, 364591, 364593, 364595, 364596, 364597, 364599, 364600, 364601, 364602, 364604, 364605, 364606, 364607, 364608, 364609, 364611, 364613, 364615, 364623, 364625, 364632, 364633, 364634, 364636, 364643, 364680, 364732, 364735, 364752. Model H175, serial numbers: 315437, 315438, 315452, 315454, 315455, 315456, 315461, 315462, 315464, 315470, 315473, 315480, 315482, 315489, 315496, 315497, 315500, 315580, 315588, 315605. Model H177, serial number: 285055 Model H179 serial numbers: 114267, 114268, 114269, 114270, 114271, 114280, 114470; b) Model H190, serial numbers: 311739, 311740, 311742, 311743, 311744, 311745, 311747, 311748, 311751, 311769, 311811, 311834, 311850, 311852, 311853, 311884, 311895, 311900, Model H195 serial number: 353166. Model H197, serial number: 310331; c) Serial numbers: 200099, 200103, 200104; d) Serial numbers: 204707, 204711, 204751, 204754, 204908 MANUFACTURER Guidant-Ireland, Clomel, Ireland, RECALLED BY Guidant Corporation, Saint Paul, MN, QUANTITY 77 devices DISTRIBUTION Nationwide and Internationally REASON 77 distributed devices may have a cracked layer of insulation in a flexible hybrid circuit, leading to internal shorting during charging such as during routine capacitor formation or for defibrillation. This would likely render the device non-functional, resulting in no output and/or telemetry communications. --------------------------------------------------------------------------- 2