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.

PubMed

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.

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