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Updated: Jan 8, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
The role of implantable cardioverter-defibrillators in the elderly
Giacomo Mugnai1, Davide Genovese2, Luca Tomasi1
1Division of Cardiology, Cardio-Thoracic Department, University Hospital of Verona, Verona, Italy.
Insights
Implantable cardioverter-defibrillators (ICDs) pose challenges in elderly patients due to competing risks and complications. A personalized approach is needed, considering frailty and shared decision-making for optimal care.
Area of Science:
- Cardiology
- Geriatrics
- Medical Ethics
Background:
- Implantable cardioverter-defibrillators (ICDs) are vital for preventing sudden cardiac death (SCD).
- Aging populations present challenges for ICD therapy in elderly patients, particularly those over 75 with frailty and comorbidities.
- Major clinical trials often excluded or underrepresented this demographic.
Purpose of the Study:
- To critically examine the evidence for ICD use in elderly patients for primary and secondary prevention of SCD.
- To highlight the impact of competing risks (non-arrhythmic death) and procedural complications on the risk-benefit ratio in older adults.
- To advocate for a shift towards individualized care, incorporating geriatric assessment and shared decision-making.
Main Methods:
- Review of existing clinical trial data and evidence regarding ICD efficacy in elderly populations.
- Analysis of competing risks of non-arrhythmic death in older individuals.
- Examination of procedural complications and long-term outcomes, including generator replacement and end-of-life management.
- Discussion of ethical considerations and consensus on ICD deactivation in palliative care.
Main Results:
- The efficacy of ICDs is attenuated in the elderly due to competing risks of non-arrhythmic death.
- Elderly patients face a higher risk of procedural and long-term complications from ICDs.
- Generator replacement decisions require re-evaluation of goals of care, not routine procedures.
- High mortality and low appropriate therapy rates are observed post-exchange in the very elderly.
- Device deactivation is ethically supported in end-of-life care to prevent futile shocks.
Conclusions:
- ICD implantation in the elderly requires careful consideration beyond ejection fraction and chronological age.
- A holistic, individualized approach integrating geriatric assessment, comorbidity burden, and shared decision-making is crucial.
- Management strategies must adapt to the unique needs and risks of older patients, including end-of-life care planning.
Abstract:
The implantable cardioverter-defibrillator (ICD) is a cornerstone therapy for the prevention of sudden cardiac death (SCD). However, with the global population aging, the application of ICD therapy to elderly patients presents a significant clinical and ethical challenge. The main clinical trials that established the efficacy of ICDs largely excluded or underrepresented individuals over the age of 75, as well as those with significant frailty and comorbidities. We critically examine the evidence for primary and secondary prevention, highlighting the concept of competing risks of non-arrhythmic death, which attenuates the potential benefit of ICDs with advancing age. The risk-benefit ratio is further complicated by a heightened risk of procedural and long-term complications, including device-related infections and pocket integrity issues such as skin erosion. The decision to perform a generator replacement at the time of battery depletion is a crucial opportunity for a new goals-of-care discussion rather than a routine procedure, as evidence shows high mortality rates and a low likelihood of appropriate therapy post-exchange in the very elderly. Finally, we address the management of the ICD at the end of life, summarizing the ethical and legal consensus supporting device deactivation as a critical component of palliative care to prevent suffering from futile shocks. This review calls for a paradigm shift away from criteria based solely on left ventricular ejection fraction and chronological age towards a holistic, individualized approach integrating comprehensive geriatric assessment, comorbidity burden, and structured shared decision-making.
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