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Scintigraphic left ventricular function during exercise in elderly patients with coronary artery disease
European Heart Journal
|November 1, 1984
Summary
Age alone does not significantly impair left ventricular ejection fraction (LV-EF) in older adults. Radionuclide ventriculography (RNV) effectively assesses LV-EF and exercise response in this population.
Area of Science:
- Cardiology
- Geriatric Medicine
- Diagnostic Imaging
Background:
- Aging can affect cardiovascular function, necessitating evaluation of left ventricular performance in older adults.
- Understanding the impact of age and coronary artery disease (CAD) on left ventricular ejection fraction (LV-EF) during exercise is crucial for geriatric cardiology.
- Radionuclide ventriculography (RNV) is a key imaging modality for assessing cardiac function.
Purpose of the Study:
- To determine if advanced age significantly impairs left ventricular ejection fraction (LV-EF) at rest and during exercise.
- To evaluate left ventricular performance in older individuals with and without coronary artery disease (CAD) using radionuclide ventriculography (RNV).
- To compare the exercise response of LV-EF in elderly subjects with various stages of CAD.
Main Methods:
- Sixty-five subjects aged 65 and older underwent radionuclide ventriculography (RNV) at rest and during supine symptom-limited exercise.
- Participants were stratified into groups: healthy controls, hypertension/atypical angina, anterior infarction, inferior infarction, and multiple infarctions.
- Left ventricular ejection fraction (LV-EF) and regional wall motion were assessed at rest and during exercise.
Main Results:
- Healthy older adults showed a significant increase in LV-EF and improved regional wall motion during exercise.
- Patients with hypertension or previous infarction (anterior/inferior) demonstrated no significant increase in LV-EF during exercise.
- Subjects with multiple infarctions exhibited severely reduced resting LV-EF with a further decline during exercise.
Conclusions:
- Age itself does not significantly impair left ventricular ejection fraction (LV-EF) at rest or during exercise in older adults.
- RNV is a valuable tool for assessing left ventricular performance in elderly patients, revealing similar exercise responses to younger individuals with comparable conditions.
- The study highlights the importance of differentiating age-related changes from disease-specific impairments in cardiac function.
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