Economic impact of longer battery life of cardiac resynchronization therapy defibrillators in Sweden
Authors Gadler F, Ding Y, Verin N, Bergius M, Miller JD, Lenhart GM, Russell MW
Received 14 June 2016
Accepted for publication 1 September 2016
Published 31 October 2016 Volume 2016:8 Pages 657—666
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 3
Editor who approved publication: Professor Giorgio Lorenzo Colombo
Fredrik Gadler,1 Yao Ding,2 Nathalie Verin,3 Martin Bergius,4 Jeffrey D Miller,5 Gregory M Lenhart,5 Mason W Russell5
1Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden; 2Truven Health Analytics, an IBM Company, Bethesda, MD, USA; 3Boston Scientific Corporation, Hemel Hempstead, Hertfordshire, UK; 4Boston Scientific Nordic AB, Helsingborg, Sweden; 5Truven Health Analytics, an IBM Company, Cambridge, MA, USA
Objective: The objective of this study was to quantify the impact that longer battery life of cardiac resynchronization therapy defibrillator (CRT-D) devices has on reducing the number of device replacements and associated costs of these replacements from a Swedish health care system perspective.
Methods: An economic model based on real-world published data was developed to estimate cost savings and avoided device replacements for CRT-Ds with longer battery life compared with devices with industry-standard battery life expectancy. Base-case comparisons were performed among CRT-Ds of three manufacturers – Boston Scientific Corporation, St. Jude Medical, and Medtronic – over a 6-year time horizon, as per the available clinical data. As a sensitivity analysis, we evaluated CRT-Ds as well as single-chamber implantable cardioverter defibrillator (ICD-VR) and dual-chamber implantable cardioverter defibrillator (ICD-DR) devices over a longer 10-year period. All costs were in 2015 Swedish Krona (SEK) discounted at 3% per annum.
Results: Base-case analysis results show that up to 603 replacements and up to SEK 60.4 million cumulative-associated costs could be avoided over 6 years by using devices with extended battery life. The pattern of savings over time suggests that savings are modest initially but increase rapidly beginning in the third year of follow-up with each year’s cumulative savings two to three times the previous year. Evaluating CRT-D, ICD-VR, and ICD-DR devices together over a longer 10-year period, the sensitivity analysis showed 2,820 fewer replacement procedures and associated cost savings of SEK 249.3 million for all defibrillators with extended battery life.
Conclusion: Extended battery life is likely to reduce device replacements and associated complications and costs, which may result in important cost savings and a more efficient use of health care resources as well as a better quality of life for heart failure patients in Sweden.
Keywords: cost analysis, economic model, cardiac resynchronization therapy defibrillator, implantable cardioverter defibrillator, battery life, device replacement, Sweden
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