Key result
DSE identifies myocardial viability with ~88% sensitivity compared to 18F-FDG PET.
Why the study?
Myocardial viability assessment is important for revascularization decisions in coronary artery disease with LV dysfunction, but comparative accuracy data between DSE and 18F-FDG PET are needed.
Does dobutamine stress echocardiography accurately identify viable myocardium compared to 18F-FDG PET in patients with ischemic cardiomyopathy?
Population
Patients with coronary artery disease, previous myocardial infarction, and significant LV dysfunction (mean LVEF 35.1%)
Comparison
Dobutamine stress echocardiography vs 18F-fluorodeoxyglucose positron emission tomography
Design
Prospective observational study
Authors
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May support dobutamine echocardiography as specific alternative to PET; leaves open prospective outcome validation in ischemic cardiomyopathy.
Observational
No
Does dobutamine stress echocardiography accurately identify viable myocardium compared to 18F-FDG PET in patients with ischemic cardiomyopathy?
Absolute Event Rate: 74% vs 82.4%
p-value: p=0.001
Dobutamine stress echocardiography is a highly specific and moderately sensitive alternative to 18F-FDG PET for assessing myocardial viability in patients with ischemic cardiomyopathy.
Kumari et al. (2024) conducted an observational in Coronary artery disease with previous myocardial infarction and significant LV dysfunction. Dobutamine stress echocardiography (DSE) vs. 18F-fluorodeoxyglucose positron emission tomography (18F-FDG PET) was evaluated on Identification of viable myocardium in dysfunctional segments (p=0.001). Dobutamine stress echocardiography detected viability in 74.0% of dysfunctional segments compared to 82.4% by 18F-FDG PET (P=0.001), demonstrating 87.6% sensitivity and 90.7% specificity.
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