/sup 201/Tl myocardial perfusion scintigraphy to evaluate patients after coronary bypass surgery

Journal Article · Tue Aug 01 00:00:00 EDT 1978 · Am. J. Cardiol.; (United States)

DOI:https://doi.org/10.1016/0002-9149(78)90896-2· OSTI ID:7098304

Greenberg, B H; Hart, R; Botvinick, E H; Werner, J A; Brundage, B H; Shames, D M; Chatterjee, K; Parmley, W W

To determine the utility of /sup 201/Tl stress scintigraphy in assessing the results of coronary bypass surgery, chest pain, stress electrocardiograms and scintigrams were evaluated in 27 patients postoperatively. These findings were compared with coronary angiographic data in which a significant postoperative lesion was defined as 75 percent or more stenosis in a graft, its distal vessel or in an ungrafted native vessel. As an indicator of postoperative coronary lesions, chest pain lacked sensitivity (60 percent) and was nonspecific (20 percent). The stress electrocardiogram had poor sensitivity (60 percent) and good specificity (86 percent) but was not helpful in six patients who had equivocal or suboptimal tests. The scintigram had good sensitivity (77 percent) and was highly specific for the diagnosis of coronary stenosis. It was significantly more specific than chest pain (P less than 0.01), gave excellent localizing information and added to the accuracy of both conclusive and inconclusive stress tests. In nine patients with preoperative stress scintigrams, comparison of pre- and postoperative studies reflected the effects of bypass surgery on coronary perfusion. Scintigraphy is a useful technique for the noninvasive evaluation of the patient after coronary bypass surgery, and postoperative scintigraphy alone is of great value in documenting surgical results.

• Research Organization: Univ. of California, San Francisco
• OSTI ID: 7098304
• Journal Information: Am. J. Cardiol.; (United States), Journal Name: Am. J. Cardiol.; (United States) Vol. 42:2; ISSN AJCDA
• Country of Publication: United States
• Language: English

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