Key result
Pulsed Doppler tissue imaging shows no accuracy benefit over 2D echo for detecting significant CAD.
Why the study?
The diagnostic accuracy of two-dimensional echocardiography compared with pulsed Doppler tissue imaging during dobutamine-atropine stress testing to detect significant coronary lesions was unclear.
Does pulsed Doppler tissue imaging improve the diagnostic accuracy of dobutamine-atropine stress testing to detect significant coronary artery disease compared to 2-D echocardiography?
Population
41 patients undergoing dobutamine-atropine stress testing and coronary angiography
Comparison
Pulsed Doppler tissue imaging vs two-dimensional echocardiography during dobutamine-atropine stress testing
Design
Cross-sectional study
Authors
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pDTI feasible but not more accurate than 2-D echo during DAST; leaves open whether tissue velocities add value in larger prospective studies.
Cross-Sectional (n=41)
Does pulsed Doppler tissue imaging improve the diagnostic accuracy of dobutamine-atropine stress testing to detect significant coronary artery disease compared to 2-D echocardiography?
Absolute Event Rate: 69% vs 76%
p-value: p=NS
Pulsed Doppler tissue imaging during dobutamine-atropine stress testing is feasible but does not provide greater diagnostic accuracy than standard 2-D echocardiography for detecting significant coronary artery disease.
Peteiro et al. (2001) conducted a cross-sectional in Coronary artery disease (n=41). Pulsed Doppler tissue imaging (pDTI) vs. Two-dimensional (2-D) echocardiography was evaluated on Accuracy for detection of significant coronary stenosis (50% luminal narrowing) (p=NS). Pulsed Doppler tissue imaging during dobutamine-atropine stress testing was not more accurate than 2-D echocardiography for detecting significant coronary artery disease (accuracy 69% vs 76%, P=NS).
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