[Usefulness of stress scintigraphy on screening coronary artery disease in peripheral vascular patients].
Coronary artery disease is an important and frequent complication of peripheral vascular patients (ASO). Therefore a non-invasive screening method is needed to decide the surgical indication for peripheral vascular patients. We studied the usefulness of stress scintigraphy (SSG) by using a bicycle ergometer. Forty-nine patients with chest pain or ECG abnormality were subjected to this study. Twenty-seven patients had coronary arteriography (CAG) performed on them. The redistribution image was noted 39 of the 49 patients who actually performed SSG. CAG was performed on 27 patients, and significant stenosis of the coronary artery was noted in 26 of them. Twenty-three of the 49 patients stopped exercising due to leg pain, but 10 out of 12 patients were noted in the redistribution image in 201Tl scintigraphy to have significant stenosis (sensitivity 83%). It is reported that SSG using a bicycle ergometer can detect ischemia with less stress than when a treadmill exercise test is used. In this study, 23 out of 49 patients stopped exercising due to leg pain but a high sensitivity of 83% was noted in these patients. This sensitivity was thought to be evidence enough to detect coronary artery disease in peripheral vascular patients. In summary, SSG is a useful screening method to detect coronary artery disease in peripheral vascular patients (ASO).
Miyazima
K
K
Cardiovascular Department of Internal Medicine, National Cardiovascular Center.
Hiramori
K
K
D000368:Aged; D001162:Arteriosclerosis Obliterans / Q000150:complications*; D017023:Coronary Angiography; D003327:Coronary Disease / Q000175:diagnosis* / Q000209:etiology; D005080:Exercise Test; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging