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Updated: May 12, 2026

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock
Published on: June 12, 2021
[Use of devices in elderly patients with chronic heart failure]
Insights
Cardiac resynchronization therapy (CRT) and implantable cardioverter-defibrillators (ICD) improve survival in elderly patients with chronic heart failure (CHF). More research is needed to confirm benefits and guide age-specific recommendations.
Area of Science:
- Cardiology
- Geriatrics
- Medical Devices
Background:
- Chronic heart failure (CHF) significantly impacts elderly patients, with persistently high mortality despite medical advancements.
- Cardiac resynchronization therapy (CRT) and implantable cardioverter-defibrillators (ICD) have improved survival rates in CHF patients.
- Evidence on the effectiveness of CRT and ICD specifically in the elderly population remains limited, primarily from observational studies.
Purpose of the Study:
- To evaluate the effectiveness and safety of CRT and ICD in elderly patients with CHF.
- To identify potential age-related differences in response to CRT and ICD therapy.
- To highlight the need for controlled clinical trials addressing quality of life, disability, and cognitive function in elderly CHF patients receiving these devices.
Main Methods:
- Analysis of data from observational studies, including the InSync/InSync ICD study (1787 patients) and the Italian Clinical Service Project (6311 patients).
- Examination of responder rates and procedural complication rates for CRT.
- Assessment of excess mortality causes in older subjects receiving ICD therapy.
Main Results:
- The InSync/InSync ICD study indicated no significant age-related differences in CRT responder rates (approx. 60%) or procedural complications (11%).
- In the Italian Clinical Service Project, comorbid conditions accounted for 22.6% of excess mortality in older subjects receiving ICDs.
- Existing data suggest CRT and ICD are generally safe and effective across age groups, but specific benefits in the elderly require further investigation.
Conclusions:
- CRT and ICD offer survival benefits for elderly CHF patients, with comparable response and complication rates to younger populations.
- Comorbidities significantly contribute to mortality risk in older CHF patients treated with ICDs.
- Further controlled clinical trials are essential to fully understand the impact of CRT and ICD on quality of life, disability, and cognitive function in the elderly, informing age-oriented guidelines.
Abstract:
Chronic heart failure (CHF) is a frequent and clinically relevant condition in elderly patients. Despite the improvements in medical therapy, CHF mortality is persistently high. The introduction into clinical practice of pacemakers for cardiac resynchronization therapy (CRT) and of implantable cardioverter-defibrillators (ICD) has significantly increased survival in CHF patients. In spite of clinical and epidemiological data, evidence of the effectiveness of these devices in the elderly is scant, and the few existing data derive from observational studies. Regarding CRT, in 1787 patients, the InSync/InSync ICD study showed no age-related differences in the prevalence of responders to therapy (about 60%) and in procedural complication rates (11%). Regarding ICD, in the 6311 patients enrolled in the Italian Clinical Service Project, 22.6% of the excess mortality observed in older subjects was due to comorbid conditions. Specific controlled clinical trials are needed to address the impact of CRT and ICD on health-related quality of life, disability and cognitive profile. The findings obtained will be useful to clarify clinical, ethical and cost-effectiveness issues in order to develop specific age-oriented guideline recommendations.
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