Comparison of dipyridamole and treadmill exercise for enhancing thallium-201 perfusion defects in patients with coronary artery disease

Comparative ability of dobutamine and exercise stress in inducing myocardial ischaemia in active patients.

“…Thirty five patients completed a maximal dobutamine protocol-that is, developed ischaemia or achieved the maximum dose and were not taking fi adrenoceptor blocking drugs-and 51 (59%) had a submaximal test (based on premature termination of the protocol or ingestion of fi adrenoceptor blocking drugs on the day of the test). In patients undergoing a maximal dobutamine stress the maximum attained heart rate exceeded that at submaximal stress (117 (20) v 98 (26) beats/minute, P < 0 001) but remained less than that attained with exercise (P = 0 005).…”

Dipyridamole Test in Angina Pectoris: Diagnostic Value and Pathophysiological Implications

“…In fact, a marked in crease in total coronary blood flow and similar myocardial perfusion abnormalities were observed with thallium-201 imaging during exercise as well as after dipyrida mole administration [10,[17][18][19][20], On the other hand, angina at rest is caused by a primary reduction of myocardial blood sup ply [21] due to reversible coronary spasm which is frequently independent of the pres ence, location and extension of coronary le sions [14,22].…”

Impact of Body Mass Index on Cardiac Mortality in Patients With Known or Suspected Coronary Artery Disease Undergoing Myocardial Perfusion Single-Photon Emission Computed Tomography

“…Stress defect Ͻ5%, 5% to 10%, and Ͼ10% myocardium were defined as normal, mildly, and moderately to severely abnormal scans (22). Because the presence and magnitude of hypoperfusion induced during adenosine MPS is roughly equivalent to the magnitude of ischemia induced during maximal exercise (23,24), we employ the term "inducible ischemia" to represent both the ischemia during exercise and adenosine MPS, even though actual ischemia is often not produced by the adenosine. Follow-up data.…”