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Singh SN, Wininger M, Raitt M, Adabag S, Moore H, Rottman JN, Scrymgeour A, Zhang J, Zheng K, Guarino P, Kyriakides TC, Johnson G, Williams A, Beed A, MacMurdy K, Saavedra P. Efficacy and safety of implantable cardioverter-defibrillator implantation in the elderly-The I-70 Study: A randomized clinical trial. Heart Rhythm O2 2024; 5:365-373. [PMID: 38984364 PMCID: PMC11228113 DOI: 10.1016/j.hroo.2024.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024] Open
Abstract
Background There is conflicting evidence on the efficacy of primary prevention implantable cardioverter-defibrillator (ICD) implantation in the elderly. Objective The purpose of this study was to determine the efficacy and safety of ICD implantation in patients 70 years and older. Methods Patients (n = 167) aged 70 years or older and eligible for ICD implantation were randomly assigned (1:1) to receive either optimal medical therapy (OMT) (n = 85) or OMT plus ICD (n = 82). Results Of the 167 participants (mean age 76.4 years; 165 men), 144 completed the study protocol according to their assigned treatment. Average participant follow-up was 31.5 months. Mortality was similar between the 2 groups: 27 deaths in OMT vs 26 death in ICD (unadjusted hazard ratio 0.92; 95% confidence interval 0.53-1.57), but there was a trend favoring the ICD over the first 36 months of follow-up. Rates of sudden death (7 vs 5; P = .81) and all-cause hospitalization (2.65 events per participant in OMT vs 3.09 in ICD; P = .31) were not statistically significantly different. Eleven participants randomized to ICD received appropriate therapy. Five participants received an inappropriate therapy that included at least 1 ICD shock. Conclusion The study did not recruit to target sample size, and accumulated data did not show benefit of ICD therapy in patients 70 years or older. Future studies similar in design might be feasible but will need to contend with patient treatment preference given the large number of patients who do not want an ICD implanted. Further research is needed to determine whether the ICD is effective in prolonging life among elderly device candidates.
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Affiliation(s)
- Steven N Singh
- Veterans Affairs Medical Center, Washington, DC
- Georgetown University, Washington, DC
| | - Michael Wininger
- Cooperative Studies Program Coordinating Center, VA Connecticut Healthcare System, West Haven, Connecticut
- Yale School of Public Health, New Haven, Connecticut
| | - Merritt Raitt
- VA Portland Healthcare System, Portland, Oregon
- Oregon Health and Sciences University, Portland, Oregon
| | - Selcuk Adabag
- Minneapolis VA Medical Center, Minneapolis, Minnesota
- University of Minnesota, Minneapolis, Minnesota
| | - Hans Moore
- Veterans Affairs Medical Center, Washington, DC
- Georgetown University, Washington, DC
- George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Jeffrey N Rottman
- Baltimore VA Medical Center, Baltimore, Maryland
- University of Maryland, Baltimore, Maryland
| | - Alexandra Scrymgeour
- Cooperative Studies Program Research Pharmacy Coordinating Center, Albuquerque, New Mexico
| | - Jane Zhang
- Cooperative Studies Program Coordinating Center, VA Connecticut Healthcare System, West Haven, Connecticut
| | - Kevin Zheng
- Cooperative Studies Program Coordinating Center, VA Connecticut Healthcare System, West Haven, Connecticut
| | | | - Tassos C Kyriakides
- Cooperative Studies Program Coordinating Center, VA Connecticut Healthcare System, West Haven, Connecticut
- Yale School of Public Health, New Haven, Connecticut
| | - Gary Johnson
- Cooperative Studies Program Coordinating Center, VA Connecticut Healthcare System, West Haven, Connecticut
| | - Alicia Williams
- Cooperative Studies Program Coordinating Center, VA Connecticut Healthcare System, West Haven, Connecticut
| | - Alex Beed
- Cooperative Studies Program Coordinating Center, VA Connecticut Healthcare System, West Haven, Connecticut
| | - Karen MacMurdy
- VA Portland Healthcare System, Portland, Oregon
- Oregon Health and Sciences University, Portland, Oregon
| | - Pablo Saavedra
- Nashville VA Medical Center, Nashville, Tennessee
- Vanderbilt University Medical Center, Nashville, Tennessee
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Habibović M, Versteeg H, Pelle AJ, Theuns DA, Jordaens L, Pedersen SS. Poor health status and distress in cardiac patients: the role of device therapy vs. underlying heart disease. ACTA ACUST UNITED AC 2012; 15:355-61. [DOI: 10.1093/europace/eus295] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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