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Dobutamine stress echocardiography: angiographic correlates
Insights
Dobutamine stress echocardiography (DSE) accurately identifies coronary artery disease (CAD). This non-invasive test effectively detects CAD presence and location, aiding in patient diagnosis and treatment planning.
Area of Science:
- Cardiology
- Diagnostic Imaging
Background:
- Dobutamine stress echocardiography (DSE) is a valuable non-invasive tool.
- Evaluating its utility in diagnosing coronary artery disease (CAD) is crucial.
Purpose of the Study:
- To determine the diagnostic utility of DSE in identifying coronary artery disease (CAD).
- To correlate DSE findings with angiographic data in a clinical setting.
Main Methods:
- Retrospective analysis of 300 DSE procedures performed between September 1992 and January 1994.
- Correlation of DSE results with cardiac catheterization data in 64 patients without interim cardiac events.
Main Results:
- DSE demonstrated a sensitivity of 89% and specificity of 82% for detecting significant obstructive CAD.
- Positive and negative predictive values were 86% and 85%, respectively.
- High sensitivity for single-vessel (94%) and multivessel (84%) disease was observed, with accurate localization in 81% of single-vessel cases.
Conclusions:
- Dobutamine stress echocardiography is a highly accurate method for evaluating coronary artery disease.
- DSE effectively identifies patients with CAD and helps pinpoint the location of the disease.
Abstract:
We started a dobutamine stress echocardiography (DSE) programme in September 1992. Until January 1994, we had performed 300 such procedures. Of these patients, 81 underwent cardiac catheterisation within 6 months of DSE without a cardiac event in the interim. Eleven DSEs were performed to assess myocardial viability and another 6 were inconclusive for myocardial ischaemia. The remaining 64 were correlated with the angiographic data to determine the utility of this technique in our institution. The mean age of the cohort was 57 years. Thirty-six patients were referred for DSE in the workup for chest pain, either anginiform (22) or atypical (14). Fourteen patients had a recent (6) or remote (8) myocardial infarction. Thirteen patients were asymptomatic. Significant obstructive coronary artery disease (CAD) was identified in 36 patients of whom 17 and 19 had single and multivessel disease respectively. The sensitivity of DSE in the entire cohort was 89% and the specificity 82%. Positive and negative predictive values of DSE were 86% and 85% respectively. Although the numbers involved were small, sensitivity figures for single and multivessel disease were 94% and 84% respectively. Of the patients with single vessel CAD, prediction of the artery involved by presumed territorial supply was accurate in 81%. DSE is a highly accurate tool for evaluating CAD, identifying both the patient with CAD and the location of disease.