Comparison of the prognostic value of dipyridamole and dobutamine stress echocardiography in patients with known or suspected coronary artery disease.

Direct comparison of the utility of dipyridamole stress echocardiography and dobutamine stress echocardiography was performed to identify patients at risk of future cardiac events in 134 patients with suspected or known coronary artery disease. The predictive values of dobutamine and dipyridamole were remarkably similar.