@entity452 stress echocardiography compared with dipyridamole thallium-201 single-photon emission computed tomography in detecting XXXX .

@entity1 @entity452 @entity3979 @entity453 @entity850
To compare the diagnostic value of @entity452 stress echocardiography with dipyridamole thallium-201 single-photon emission computed tomography (SPECT) in detecting @entity453 ( @entity453 ), we performed both tests on 54 @entity1 who also underwent coronary arteriography. @entity452 was infused at an incremental regimen of 5, 10, 20, 30 and 40 micrograms.kg-1.min-1. Dipyridamole was infused at a rate of 0.14 mg.kg-1.min-1 over 4 min. @entity452 stress echocardiography detected 40 (93%) and SPECT 42 (98%, P = ns) of the 43 @entity1 with significant @entity453 , defined as > or = 50% diameter @entity850 . The specificity was 73% (8 of 11) for both tests. The sensitivity for detecting individual @entity3979 with @entity452 stress echocardiography was 81% (30 of 37) for the left anterior descending artery, 75% (24 of 32) for the right coronary artery, and 61% (17 of 28) for the left circumflex artery. For SPECT it was 89%, 97% (P < 0.05 vs @entity452 stress echocardiography) and 75%, respectively. Among the 97 stenotic coronary arteries, 17 had mild to moderate @entity850 (50%-69% diameter @entity850 ) and 80 had severe @entity850 (> or = 70% diameter @entity850 ). With @entity452 stress echocardiography, 53% of the arteries with mild to moderate @entity850 were identified vs 78% of those with severe @entity850 (P < 0.05). With SPECT, the sensitivity was 82% (14 of 17) in mild to moderate @entity850 and 89% (71 of 80) in severe @entity850 (P = ns). No major side effects occurred during either test. Thus, both @entity452 stress and SPECT are highly sensitive for detection and localization of @entity453 .(ABSTRACT TRUNCATED AT 250 WORDS)
