Dobutamine stress body surface mapping in Kawasaki disease.
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概要
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The dobutamine (DOB) stress body surface mapping tests were carried out to detect myocardial ischemia in 23 patients who had Kawasaki disease previously. Eight of 23 patients (group A) had coronary stenosis of 75% or more diameter reduction in major coronary arteries without sufficient collateral flow, as shown by the coronary angiography, but without myocardial infarction. Nine patients (group B) showed no ischemic change exercised <SUP>201</SUP>Tl myocardial scintigram. Six patients (group C) had myocardial infarction due to Kawasaki disease.<BR>ST segment potential mapping (0.04 sec after the J point in QRS) and ST-T Isointegral mapping were performed using CVM-3000 system (87 leads), and the following calculations were made: number of leads with horizontal or down-sloping ST depression of 0.10 mV or more, lasting 0.08 sec (nST); row number of the minimum lead in the Isointegral map (Imin); number of positive leads on the seventh row in Isointegral mapping (I-7); number of positive leads on the first row in Isointegral mapping (I-1) and I-7/I-1 ratio. Based on these calculations the criteria for detecting myocardial ischemia (nST≤2, Imin≤2, I-7/I-1≥1) were created and their usefulness was tested using findings of coronary angiography and exercised <SUP>201</SUP>Tl myocardial scintigram as the golden standard.<BR>For the diagnosis of ischemic lesion, the DOB stress body surface mapping test in group A had higher specificity (nST: 100%, Imin: 89%, I-7/I-1: 100% vs. 78%) and higher sensitivity (75%, 50%, 63% vs. 38%), than those by the Treadmill test, while ischemic changes were not detected in group C by this test. From these results it is concluded that it is useful in evaluating ischemic heart disease in children who can not perform Treadmill exercised test adequately.
- 日本医科大学医学会の論文
日本医科大学医学会 | 論文
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