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PREMATURE BATTERY DEPLETION IN ST. JUDE FORTIFY®, UNIFY ®, AND CURRENT® CARDIAC IMPLANTED ELECTRONIC DEVICES
867 JACC April 5, 2016 Volume 67, Issue 13
Arrhythmias and Clinical EP PREMATURE BATTERY DEPLETION IN ST. JUDE FORTIFY®, UNIFY ®, AND CURRENT® CARDIAC IMPLANTED ELECTRONIC DEVICES Poster Contributions Poster Area, South Hall A1 Monday, April 04, 2016, 9:45 a.m.-10:30 a.m. Session Title: Clinical Care of Patients With Implanted Devices Abstract Category: 18. Arrhythmias and Clinical EP: Devices Presentation Number: 1266-334 Authors: Travis Dennis Richardson, Babar Parvez, Sharon Shen, Christopher Ellis, Jeffrey Rottman, Vanderbilt Heart and Vascular Institute, Nashville, TN, USA, Nashville VA Medical Center, Nashville, TN, USA
Background: Predictability of battery performance in pacemakers (PM) and implantable cardioverter-defibrillators (ICD) is necessary for safe clinical management. Unpredictable performance can have life threatening implications.
Methods: Six cases of premature battery depletion in St. Jude Fortify®, Unify ®, and Current® devices were identified. All available device data from one year prior to generator change was reviewed for trend in battery capacity, percent pacing, tachycardia therapies, and remote transmissions.
Results: All six cases demonstrated rapid depletion of battery capacity (Figure 1). In the 12 months prior to generator change there were no significant changes in pacing burden or transmissions. None of the patients received either ATP or shocks in the 12 months prior to generator change. In three of the six cases the device reached the elective replacement indicator and end of service within 24 hours. In two cases emergent generator change was necessary due to PM dependence. Conclusions: Devices in the St. Jude Fortify®, Unify ®, and Current® device families may exhibit rapid battery depletion. Lithium cluster formation leading to battery depletion has been previously described. These data suggest this problem may be more common than previously thought, or multiple mechanisms may be present. Due to the unpredictable nature of battery performance in these device families, careful monitoring and potentially generator change for any abnormal battery behavior is indicated.
Arrhythmias and Clinical EP PREMATURE BATTERY DEPLETION IN ST. JUDE FORTIFY®, UNIFY ®, AND CURRENT® CARDIAC IMPLANTED ELECTRONIC DEVICES Poster Contributions Poster Area, South Hall A1 Monday, April 04, 2016, 9:45 a.m.-10:30 a.m. Session Title: Clinical Care of Patients With Implanted Devices Abstract Category: 18. Arrhythmias and Clinical EP: Devices Presentation Number: 1266-334 Authors: Travis Dennis Richardson, Babar Parvez, Sharon Shen, Christopher Ellis, Jeffrey Rottman, Vanderbilt Heart and Vascular Institute, Nashville, TN, USA, Nashville VA Medical Center, Nashville, TN, USA
Background: Predictability of battery performance in pacemakers (PM) and implantable cardioverter-defibrillators (ICD) is necessary for safe clinical management. Unpredictable performance can have life threatening implications.
Methods: Six cases of premature battery depletion in St. Jude Fortify®, Unify ®, and Current® devices were identified. All available device data from one year prior to generator change was reviewed for trend in battery capacity, percent pacing, tachycardia therapies, and remote transmissions.
Results: All six cases demonstrated rapid depletion of battery capacity (Figure 1). In the 12 months prior to generator change there were no significant changes in pacing burden or transmissions. None of the patients received either ATP or shocks in the 12 months prior to generator change. In three of the six cases the device reached the elective replacement indicator and end of service within 24 hours. In two cases emergent generator change was necessary due to PM dependence. Conclusions: Devices in the St. Jude Fortify®, Unify ®, and Current® device families may exhibit rapid battery depletion. Lithium cluster formation leading to battery depletion has been previously described. These data suggest this problem may be more common than previously thought, or multiple mechanisms may be present. Due to the unpredictable nature of battery performance in these device families, careful monitoring and potentially generator change for any abnormal battery behavior is indicated.