Atrial pacing and thallium-201 scintigraphy in @entity1 with XXXX : correlation with coronary anatomy.

@entity1 @entity662 @entity308 @entity66 @entity3154 @entity951 @entity453
Atrial pacing and @entity3154 scintigraphy were performed in 72 @entity1 referred for evaluation of @entity662 . @entity453 ( @entity453 ) was present in 63 @entity1 , as documented by cardiac catheterization performed at the same time or within 2 months of atrial pacing. Nine @entity1 had no or insignificant (less than 50% stenosis) @entity453 . The sensitivity of pacing-induced @entity951 for @entity453 was 51%, and was 49% for ST @entity308 . Specificities were 89% and 78%, respectively. A reversible perfusion defect was seen in 54% of @entity1 with @entity453 (specificity 89%), and a fixed defect in 29% (specificity 100%). The sensitivity of an abnormal thallium-201 scan (one or more reversible or fixed defects) was 79% (p less than 0.05 compared to @entity308 ). Combined sensitivity of ST @entity308 and/or an abnormal thallium-201 scan was 87%. There were no significant changes in any of these sensitivities as the number of vessels with @entity453 increased. @entity3154 scintigraphy correctly identified 11 of 19 (58%) @entity1 with @entity66 as having @entity453 in only one vessel, but underestimated the extent of disease in all but a few @entity1 with multivessel disease. The sensitivity of perfusion imaging to identify lesions in specific vessels ranged from 27% (circumflex) to 57% (right coronary artery). Specificities were 100% for circumflex, 78% for anterior descending, and 83% for right coronary artery lesions.(ABSTRACT TRUNCATED AT 250 WORDS)
