Biomedical subjects

Y Kijima

Publications and source records attributed to Y Kijima.

At least 73 records · Page 4Linked to original sources

PubMed1982

[Myocardial imaging in patients with Kawasaki disease: exercise stress imaging and serial studies].

Thallium-201 myocardial imaging was performed in 80 children with coronary arterial lesions due to Kawasaki disease in order to assess the value of serial and exercise myocardial imagings. In eight of these children, abnormalities of the image were noted. Twenty children had serial thallium studies with an interval of three to 18 months, and five of these showed changes in the image including appearance of a new perfusion defect in one patient and improvement of perfusion defects in four. These changes of the myocardial image were correlated well with coronary angiographic findings obtained within a few days of the isotope studies. It was noted that the changes of the myocardial image were more frequently observed at relatively recent period recovered from Kawasaki disease. Exercise myocardial imaging using a bicycle ergometer was performed in eight children with coronary arterial lesions. In three an evidence of improvement of the myocardial perfusion was noted immediately after exercise as well as on the delayed image. In one patient, a decrease of the perfusion in the apex and inferior wall was noted immediately after exercise. On the observed image, image of the apex improved but that of the inferior wall remained hypoperfused. Thus thallium-201 myocardial imaging was considered to permit the best noninvasive documentation of ongoing myocardial perfusion abnormalities in patients with Kawasaki disease. Exercise myocardial imaging was found to be useful in differentiating the viable from nonviable myocardium. It was to be emphasized that quantitative evaluation by computer-assisted analysis was particularly valuable in detecting small areas and in a comparison of the myocardial images.

Adolescent↗

PubMed1981

[Two-dimensional echocardiography of coronary artery in Kawasaki disease (MCLS): detection, changes in acute phase, and follow-up observation of the aneurysm (author's transl)].

Two-dimensional echocardiography (2-D echo) was performed before coronary angiography in 213 patients (pts), 4 months to 12 years old, with a history of Kawasaki disease (MCLS). In 10 pts, 2-D echo was performed almost everyday during acute phase. In 23 pts, coronary artery aneurysms were followed up for more than 6 months by 2-D echo. In 32 of 213 pts, the presence of coronary artery aneurysms (9 pts with left, 4 pts with right and 19 pts with both coronary arteries) were proved by coronary angiography. The correct diagnosis was achieved prospectively by 2-D echo in 26 of 32 pts with coronary artery aneurysm (in 24 of 28 pts with left and 15 of 23 pts with right coronary artery aneurysm). In all 10 pts with acute phase of MCLS, an increased echocardiographic density around the coronary artery and of the coronary artery itself continued from the 4th or 6th day to the 10th day or near the second month of the illness. The findings were considered due to acute perivasculitis and vasculitis in the coronary artery. In 5 of 10 pts, the dilatation of coronary artery was demonstrated on about 6th day of the illness and in 3 pts was transient, but in other 2 pts the dilated coronary arteries grew up aneurysms on the 9th and 13th day of the illness. In 23 pts with coronary artery aneurysm followed up by 2-D echo for more than 6 months, 18 pts were started to observe within 6 months and 5 pts beyond 1 year after the onset of illness. In the former, the size of aneurysm was markedly reduced in 7, slightly reduced in 6, and did not change in 5 pts. On the other hand, it did not change in all the 5 pts of the latter. This study suggests that 2-D echo is very useful to diagnose noninvasively coronary artery aneurysm in pts with the history of MCLS and to detect and follow-up it in acute phase.

Aneurysm↗

PubMed1981

[Two-dimensional echocardiographic diagnosis of congenital malformations of the aorta in infants and children (author's transl)].

Two-dimensional echocardiographic studies were performed in 23 patients with coarctation of the aorta, 5 with interruption of the aortic arch, 6 with supravalvular aortic stenosis, 3 with truncus arteriosus, 2 with anomalous origin of the right pulmonary artery from the ascending aorta and 2 with aorto-pulmonary septal defect. The diagnosis was confirmed in each patient by surgery and/or cardiac catheterization and angiography. Visualization of the junction of isthmus and the descending aorta was possible in 18 of 23 patients with coarctation by two-dimensional echocardiography. In 13 patients correct diagnosis was obtained prospectively and in 2 patients coarctation was detected retrospectively. In only one of the 5 patients with interruption correct diagnosis was obtained and in 3 patients it was difficult to differentiate interruption from coarctation. In 5 of the 6 patients with supravalvular aortic stenosis, visualization of the area of obstruction was possible to two-dimensional echocardiography. In 2 of the 3 patients with truncus arteriosus, in whom none of the 2 had anomalous origin the right pulmonary artery from the ascending aorta and one of the 2 had aorto-pulmonary septal defect, correct diagnosis was obtained prospectively by two-dimensional echocardiography. Two-dimensional echocardiography may offer a useful noninvasive method for the direct visualization of aortic obstructive lesions and aortic malformations.

Angiography↗

PubMed1980